Updated on 2024/07/28

Information

 

写真a

 
OHTAKI MICHITAKA
 
Organization
Faculty of Engineering Sciences Department of Advanced Materials Science and Engineering Professor
Research Center for Green Technology （Joint Appointment）
Research Center for Synchrotron Light Applications （Joint Appointment）
School of Engineering （Joint Appointment）
Interdisciplinary Graduate School of Engineering Sciences Department of Interdisciplinary Engineering Sciences（Joint Appointment）
Title
Professor
Contact information
メールアドレス
Tel
0925837947
Profile
平成2年4月から平成10年3月まで、九州大学大学院総合理工学研究科材料開発工学専攻助手として、機能無機材料工学講座において機能性セラミックスを中心とした研究教育活動に従事。平成10年4月より、同研究科(現学府)物質理工学専攻助教授（のちエネルギー物質科学部門准教授）として、固体表面科学大講座・理論物質学教育分野において、固体電子物性、低次元ナノ構造物質、光・エネルギー変換材料を中心とする研究教育活動に従事、平成25年9月より、大学院総合理工学研究院エネルギー物質科学部門教授として、総合理工学府 量子プロセス理工学専攻 光機能材料工学大講座・無機光機能材料工学教育分野において、無機機能材料、熱電エネルギー変換、光エネルギー変換などに関する研究教育活動に従事している。また、産・官との研究協力も積極的に推進している。 　現在の主な研究テーマは、高効率エネルギー利用のための環境調和型酸化物熱電材料の開発、規則化低次元量子構造半導体の創製とその光・電子機能、酸化物半導体の電子状態設計など。 　大学院教育科目として平成10年度より「量子物性論」、平成11年度より「表面理論科学」、平成26年度より「無機光機能材料工学基礎」（平成28年度より「機能物性工学基礎」に改題）を開講。学部教育として工学部エネルギー化学科の「エネルギー物質工学実験・演習」「エネルギー科学展望」「応用物質工学」「エネルギー材料科学」、工学部融合基礎工学科の「専門英語」を担当。全学教育科目として1998(平成10)〜2014(平成26)年度に「熱と波動論基礎」を、基幹教育科目として2014(平成26)〜2015(平成27)年度に「基幹物理学ⅠA」、2016(平成28)年度に「基礎化学結合論」、2019(令和元)年度に「基礎化学熱力学」、2023(令和5)年度に「基礎化学結合論Ⅱ」「課題協学科目」を担当。 研究業績 原著論文150、著書14(分担執筆)、総説22、特許12、学会発表300、招待講演68（うち海外45） 所属学会 日本化学会・日本セラミックス協会・電気化学会・日本熱電学会・The American Ceramic Society・International Thermoelectric Society・佐賀県立九州シンクロトロン光研究センター「利用研究フォーラム」基礎光科学開発研究会 教育活動 大学院教育：先端固体物性i・材料情報学特論Ⅱi・材料機能設計基盤特論Ⅱe・機能物性工学演習・機能物性工学実習・Fundamentals of Applied Science for Electronics and Materials III・Inorganic Materials for Efficient Energy Conversion 学部教育：エネルギー物質工学実験I〜II（前・後期）、エネルギー物質工学演習、エネルギー科学展望、エネルギー材料科学、専門英語 基幹教育：基礎化学結合論Ⅱ、課題協学科目
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Degree

  • Doctor of Engineering

Research Interests・Research Keywords

  • Research theme：Development of oxide thermoelectric modules for mid-to-high temperature waste heat recovery

    Keyword：zinc oxide, layered cobalt oxide, microstructure control, long-term stability assessment

    Research period： 2002.11

  • Research theme：Self-assembly low-dimensional nanomaterials showing quantum-confined properties

    Keyword：quantum-confined nanomaterials, spatial regularity, nanospace, interlayer interaction

    Research period： 1998.4

  • Research theme：Self-assembly synthesis and properties of inorganic nanomaterials with low-dimensional quantum confinement structures

    Keyword：low-dimensional nanomaterial, molecular assembly, self-assembly, nano-superlattice, photocatalyst, magnetism, inorganic-organic hybrid

    Research period： 1996.4

  • Research theme：Oxide thermoelectric materials for recuperating unused waste heat energy

    Keyword：thermoelectric material, oxide semiconductor, energy conversion material, conductive ceramics, thermal conductivity, zinc oxide

    Research period： 1991.7

Awards

  • 2023 Global Star Award

    2023.1   The American Ceramic Society   The Global Star Award recognizes active volunteers for their contributions to the Engineering Ceramics Division (ECD) and to the technical program of the International Conference & Exposition on Advanced Ceramics & Composites (ICACC) meeting.

  • 日本セラミックス協会　第74回学術賞

    2019.11   公益社団法人 日本セラミックス協会   組成とナノ構造の制御による酸化物サーモエレクトロニクスの開拓

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    従来の熱電半導体理論では、高い熱電性能を示すことは「あり得ない」と考えられていた金属酸化物について、先駆的・独創的な材料探索研究を行い、実用的な酸化物セラミックス材料において従来の常識を覆す優れた酸化物熱電材料を世界に先駆けて次々に見出した。
    まず、良導電性酸化物であるIn2O3系複合酸化物が比較的良好な熱電特性を示し、さらに高温ほど性能が向上することを酸化物として初めて報告した(被引用数107)。続いてホッピング伝導のn型CaMnO3系ペロブスカイト型酸化物が、移動度は約１cm2/Vsと化合物半導体の数百〜数千分の一と小さいながらZT = 0.16に達すること(被引用数352)、さらにn型AlドープZnOが1000℃でZT = 0.3を示すことを見出した(被引用数560)。このZT値は、当時高温用熱電半導体として有望視されていたβ-SiCを凌ぎ、酸化物が非酸化物候補材料と互角の熱電性能を示しうることを世界に初めて示した。
    さらに、ZnOの電気的特性を保ちつつ格子熱伝導率を低減するという困難な課題に挑戦し、緻密焼結体中へのナノ空孔の導入、さらにAlとGaの共ドープにより自己形成されるナノ構造によって格子熱伝導率が全温度域で著しく低下することを見出し、1000℃でZT = 0.65を得た(被引用数316)。これは現在に至るまでn型バルク酸化物の世界最高性能である。
    一方、1997年に寺崎らによって単結晶でZT ≒ 1という優れたp型熱電性能が見出されたNaCo2O4についても、焼結体合成条件を最適化してNaの粒界析出を抑制することにより、バルクセラミックスにおいて単結晶に近いZT = 0.78を達成した(被引用数32)。
    さらに極めて異方性の強いミスフィット層状コバルト酸化物であるCa3Co4O9についても種々のドーピングによる性能向上を進め(被引用数100)、Agと後期重希土類元素の共ドープによりAgナノ粒子を析出させた焼結体でZT = 0.63というp型バルクセラミックス酸化物として現在でも世界最高の性能を達成している(被引用数208)。
    以上のように受賞者は、イオン性軽元素化合物である酸化物が、従来の常識に反して良好な熱電性能を示しうることを世界で初めて発見し、重元素材料では不可能な高温耐久性と環境適合性を併せ持つ酸化物材料について、薄膜やナノ物質ではなく、実用的に必要不可欠なバルクセラミックスの組成制御とナノ構造形成による性能向上に邁進した。その結果、n型p型ともバルク酸化物材料としての世界最高性能を達成し、さらに最先端の非酸化物熱電変換材料をも凌駕する低熱伝導性酸化物を創出するなど、本領域の研究開発を文字通り世界的に牽引している。

  • 日本熱電学会学術賞

    2018.9   一般社団法人日本熱電学会   酸化物熱電変換材料の創始と研究開発

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    1990年代初頭まで、有望な熱電変換材料はBi2Te3、PbTe、Si-Ge合金の3種類にほぼ限定されていた。新しい材料候補群として、MnSix、β-FeSi2、β-SiC、B4Cなどが提案されていたが、かつて金属酸化物が議論の俎上に載ることはなかった。酸化物はイオン性化合物であるため金属–酸素間結合の分極が強く、軌道の重なりも小さいため、伝導電子の移動度は必然的に小さく、さらに軽元素である酸素を主要構成元素とするため、高い格子熱伝導率が不可避であると考えられていたからである。
    受賞者は、高温大気中での安定性に優れる良導電性酸化物が、大温度差を利用できる高出力熱電変換材料として有望であることに着目し、1991年の半ばから酸化物熱電変換材料について、先駆的な探索研究を開始した。最初に着手したのは高移動度酸化物として知られているIn2O3系複合酸化物であり、引き続いてn型CaMnO3系ペロブスカイト型酸化物がホッピング伝導のため電子移動度は約１cm2/Vsと化合物半導体の数百〜数千分の一と小さいながらZT = 0.16に達すること、さらにn型AlドープZnOは1000℃でZT = 0.３を示すことを見出した。このZT値は、当時高温用熱電半導体として有望視されていたβ-SiCを凌ぐもので、酸化物が非酸化物候補材料と互角の熱電性能を示しうることを初めて提示したといえる。
    　AlドープZnOの出力因子はPbTeに匹敵するが、格子熱伝導率が高いためZTは十分ではない。候補者は様々な対策を検討した結果、AlとGaの共ドープによりZnOの結晶粒が微細化し格子熱伝導率が全温度域で著しく低下することを見出し、1000℃でZT = 0.65を得た。これは現在に至るまでn型バルク酸化物の最高性能である。
    　一方、1997年に寺崎らによって単結晶でZT ≒ 1という優れたp型熱電性能が見出されたNaCo2O4についても、候補者は焼結体合成条件によりNaの粒界析出を抑制して単結晶に近いZT = 0.78を達成し、さらに異方性の強いミスフィット層状コバルト酸化物であるCa3Co4O9についても、Agと後期重希土類元素の共ドープにより焼結体でZT = 0.63というp型バルク酸化物としての最高性能を得ている。
    　さらに受賞者は、軽元素である酸素を多量に含むため本来的に格子熱伝導率が高いという酸化物の常識に挑戦し、かご状構造にアルカリ原子を内包したβ-パイロクロア型酸化物が、充填スクッテルダイトやクラスレート化合物よりさらに低い熱伝導率を示すことを見出し、これが内包原子のラトリング運動によるものであることを酸化物で初めて実証した。

Papers

  • Thermoelectric Quaternary Sulfide Cu2+xZn1−xSnS4 (x = 0–0.3): Effects of Cu substitution for Zn Reviewed International journal

    272   2021.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.mseb.2021.115353

  • Synergistic Effect of Chemical Substitution and Insertion on the Thermoelectric Performance of Cu26V2Ge6S32 Colusite Reviewed International journal

    #Yuta SHIMIZU, Koichiro SUEKUNI, Hikaru SAITO, Pierric LEMOINE, Emmanuel GUILMEAU, Bernard RAVEAU, Raju CHETTY, Michihiro OHTA, Toshiro TAKABATAKE, Michitaka OHTAKI

    Inorganic Chemistry   2021.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.inorgchem.1c01321

  • Thermal Conductivity of Nano-Crystallized Indium-Gallium-Zinc Oxide Thin Films Determined by Differential Three-Omega Method Reviewed International journal

    #Rauf KHAN, Michitaka OHTAKI, Satoshi HATA, Koji MIYAZAKI, Reiji HATTORI

    Nanomaterials   11 ( 6 )   2021.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.3390/nano11061547

  • Thermoelectric Properties of In- and Ga-doped Spark Plasma Sintered ZnO Ceramics Reviewed International journal

    #Ahrong JEONG, Koichiro SUEKUNI, Michitaka OHTAKI, Byung Koog JANG

    Ceramics International   2021.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ceramint.2021.05.101

  • Rapid Synthesis of W18O49 via Reactive Spark Plasma Sintering with Controlled Anisotropic Thermoelectric Properties Reviewed International journal

    Nhat Quang Minh TRAN, Michitaka OHTAKI, Koichiro SUEKUNI

    Evergreen   8 ( 2 )   2021.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    Repository Public URL： http://hdl.handle.net/2324/4480715

  • Key Role of d0 and d10 Cations for the Design of Semiconducting Colusites: Large Thermoelectric ZT in Cu26Ti2Sb6S32 Compounds Reviewed International journal

    #Takashi HAGIWARA, Koichiro SUEKUNI, Pierric LEMOINE, Andrew R. SUPKA, Raju CHETTY, Emmanuel GUILMEAU, Bernard RAVEAU, Marco FORNARI, Michihiro OHTA, Rabih Al Rahal Al ORABI, Hikaru SAITO, #Katsuaki HASHIKUNI, Michitaka OHTAKI

    Chemistry of Materials   33 ( 9 )   3449 - 3456   2021.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.chemmater.1c00872

  • A Comparative Study of Thermoelectric Cu2TrTi3S8 (Tr = Co and Sc) Thiospinels: Enhanced Seebeck Coefficient via Electronic Structure Modification Reviewed International journal

    #Katsuaki HASHIKUNI, Koichiro SUEKUNI, Hidetomo USUI, Raju CHETTY, Michihiro OHTA, Toshiro TAKABATAKE, Michitaka OHTAKI

    Journal of Alloys and Compounds   871   2021.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jallcom.2021.159548

  • Thermoelectric Properties of Mo-doped Bulk In2O3 and Prediction of its Maximum ZT Reviewed International journal

    #Wojciech KLICH, Michitaka OHTAKI

    Ceramics International   47 ( 13 )   18116 - 18121   2021.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ceramint.2021.03.129

  • Thermoelectric Figure of Merit Enhancement in Cement Composites with Graphene and Transition Metal Oxides Reviewed International journal

    #Sampad GHOSH, Sivasankaran HARISH, Michitaka OHTAKI, Bidyut Baran SAHA

    Materials Today Energy   18   2020.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.mtener.2020.100492

  • Highly Improved Thermoelectric Performance of Nb-doped SrTiO3 due to Significant Suppression of Phonon Thermal Conduction by Synergetic Effects of Pores and Metallic Nanoparticles Reviewed International journal

    #Shinji HIRATA, Michitaka OHTAKI, Kosuke WATANABE

    Ceramics International   46 ( 16A )   25964 - 25969   2020.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ceramint.2020.07.085

  • Multi-scale defects in ZnO thermoelectric ceramic materials co-doped with In and Ga Reviewed

    Anh Tuan Thanh Pham, Tuyen Anh Luu, Ngoc Kim Pham, Hanh Kieu Thi Ta, Truong Huu Nguyen, Dung Van Hoang, Hoa Thi Lai, Vinh Cao Tran, Jong Ho Park, Jae Ki Lee, Sungkyun Park, Ohtaki Michitaka, Su Dong Park, Hung Quang Nguyen, Thang Bach Phan

    Ceramics International   46 ( 8 )   10748 - 10758   2020.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ceramint.2020.01.084

  • Effects of Multi-scale Defects on the Thermoelectric Properties of Delafossite CuCr1-xMgxO2 Materials Reviewed International journal

    Dung Van HOANG, Anh Tuan Thanh PHAM, Hanh Kieu Thi TA, Truong Huu NGUYEN, Ngoc Kim PHAM, Lai Thi HOA, Vinh Cao TRAN, Michitaka OHTAKI, #Quang Minh Nhat TRAN, Jong-Ho PARK, Jae-Ki LEE, Su-Dong PARK, Tae-Seong JU, Hongjun PARK, Sungkyun PARK, Thang Bach PHAN

    Journal of Alloys and Compounds   844   2020.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jallcom.2020.156119

  • Enargite Cu3PS4: A Cu–S-Based Thermoelectric Material with a Wurtzite-Derivative Structure Reviewed

    30 ( 22 )   2020.5

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    Compound semiconductors derived from ZnS (zincblende and wurtzite) with tetrahedral framework structures have functions for various applications. Examples of such materials include Cu–S-based materials with zincblende-derivative structures, which have attracted attention as thermoelectric (TE) materials over the past decade. This study illuminates superior TE performance in polycrystalline samples of enargite Cu3P1−xGexS4 with a wurtzite-derivative structure. The substitution of Ge for P dopes holes into the top of the valence band composed of Cu-3d and S-3p, whereby its multiband characteristic leads to a high TE power factor. Furthermore, a reduction in the grain size to 50–300 nm can effectively decrease phonon mean free paths, leading to low thermal conductivity. These features result in a dimensionless TE figure of merit ZT of 0.5 at 673 K for the x = 0.2 sample. Environmentally benign and low-cost characteristics of the constituent elements of Cu3PS4, as well as its high-performance thermoelectricity, make it a promising candidate for large-scale TE applications. Furthermore, this finding extends the development field of Cu–S-based TE materials to those with wurtzite-derivative structures.

    DOI： 10.1002/adfm.202000973

  • Enhanced figure of merit of cement composites with graphene and ZnO nanoinclusions for efficient energy harvesting in buildings Reviewed

    Sampad Ghosh, Sivasankaran Harish, Michitaka Ohtaki, Bidyut Baran Saha

    Energy   198   2020.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.energy.2020.117396

  • Simultaneous enhancement in the electrical conductivity and reduction in the lattice thermal conductivity leading to enhanced thermoelectric zt realized by incorporation of metallic nanoparticles into oxide matrix Reviewed

    Shinji Hirata, Michitaka Ohtaki

    Evergreen   7 ( 1 )   1 - 6   2020.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.5109/2740934

  • A strategy for boosting the thermoelectric performance of famatinite Cu3SbS4 Reviewed

    Taiki Tanishita, Koichiro Suekuni, Hirotaka Nishiate, Chul Ho Lee, Michitaka Ohtaki

    Physical Chemistry Chemical Physics   22 ( 4 )   2081 - 2086   2020.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/c9cp06233e

  • Graphene enhanced thermoelectric properties of cement based composites for building energy harvesting Reviewed

    Sampad Ghosh, Sivasankaran Harish, Kaiser Ahmed Rocky, Michitaka Ohtaki, Bidyut Baran Saha

    Energy and Buildings   202   2019.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.enbuild.2019.109419

  • Electronic structure and thermoelectric properties of Sn1.2-xNbxTi0.8S3 with a quasi-one-dimensional structure Reviewed International journal

    Koichiro Suekuni, @Hidetomo Usui, #Siying Qiao, #Katsuaki Hashikuni, #Tatsuya Hirano, @@Hirotaka Nishiate, @Chul Ho Lee, @Kazuhiko Kuroki, Kosuke Watanabe, Michitaka Ohtaki

    Journal of Applied Physics   125 ( 17 )   2019.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1063/1.5093183

  • Atomic-scale phonon scatterers in thermoelectric colusites with a tetrahedral framework structure Reviewed International journal

    Koichiro Suekuni, #Yuta Shimizu, @Eiji Nishibori, @Hidetaka Kasai, Hikaru Saito, @Daichi Yoshimoto, #Katsuaki Hashikuni, @Yohan Bouyrie, @Raju Chetty, @Michihiro Ohta, @Emmanuel Guilmeau, @Toshiro Takabatake, Kosuke Watanabe, Michitaka Ohtaki

    Journal of Materials Chemistry A   7 ( 1 )   228 - 235   2019.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/c8ta08248k

  • Thermoelectric Properties and Electronic Structures of CuTi2S4 Thiospinel and Its Derivatives: Structural Design for Spinel-Related Thermoelectric Materials Reviewed International journal

    #Katsuaki Hashikuni, Koichiro Suekuni, @Hidetomo Usui, @Raju Chetty, @Michihiro Ohta, @Kazuhiko Kuroki, @Toshiro Takabatake, Kosuke Watanabe, Michitaka Ohtaki

    Inorganic Chemistry   58 ( 2 )   1425 - 1432   2019.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.inorgchem.8b02955

  • Low Thermal Conductivity of RE-Doped SrO(SrTiO3)1 Ruddlesden Popper Phase Bulk Materials Prepared by Molten Salt Method Reviewed International journal

    @Yulia Eka Putri, @Suhana Mohd Said, @Refinel Refinel, Michitaka Ohtaki, @Syskri Syukri

    Electronic Materials Letters   1 - 7   2018.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s13391-018-0062-x

  • Carrier Concentration Tuning in Thermoelectric Thiospinel Cu2CoTi3S8 by Oxidative Extraction of Copper Reviewed International journal

    @Katsuaki Hashikuni, Koichiro Suekuni, Kosuke Watanabe, @Yohan Bouyrie, @Michihiro Ohta, Michitaka Ohtaki, @ToshiroTakabatake

    Journal of Solid State Chemistry   259   5 - 10   2018.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jssc.2017.12.031

  • Crystal Structure and Thermoelectric Properties of β-Pyrochlore-Type Alkali Iron Tungsten Oxides with Cage-Like Structure Reviewed International journal

    45 ( 3 )   1695 - 1699   2016.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s11664-015-4179-5

  • Nanostructured oxide thermoelectric materials with enhanced phonon scattering

    Michitaka Ohtaki

    Oxide Thin Films, Multilayers, and Nanocomposites   107 - 122   2015.1

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    Language：English  

    DOI： 10.1007/978-3-319-14478-8_7

  • Effects of morphology on the thermoelectric properties of Al-doped ZnO Reviewed International journal

    RSC Advances   4 ( 24 )   12353 - 12361   2014.2

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    Language：English   Publishing type：Research paper (scientific journal)  

  • La doped effects on structure and thermoelectric properties of Sr2MnMoO6 double-perovskite oxides Reviewed International journal

    Tohru Sugahara, Michitaka Ohtaki, Katsuaki Suganuma

    Journal of Asian Ceramic Societies   1 ( 3 )   282 - 288   2013.9

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  • Extremely Low Thermal Conductivity in Oxides with Cage-like Crystal Structure Reviewed International journal

    Michitaka Ohtaki, So Miyaishi

    Journal of Electronic Materials   42   2013.6

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    DOI： 10.1007/s11664-012-2382-1

  • The Influence of α- and γ-Al2O3 Phases on the Thermoelectric Properties of Al-doped ZnO Reviewed International journal

    Li Han, Ngo Van Nong, Le Thanh Hung, Nini Pryds, Michitaka Ohtaki, Søren Linderoth

    555   291 - 296   2013.4

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  • Synthesis and Self-Assembly of Gold Nanoparticles by Chemically Modified Polyol Methods under Experimental Control Reviewed International journal

    Nguyen Viet Long, Michitaka Ohtaki, Masayoshi Yuasa, Satoshi Yoshida, Taiga Kuragaki, Gao Minh Thi, Masayuki Nogami

    Journal of Nanomaterials   2013   793125   2013.4

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  • Experimental Evidences of Crystal Nucleation and Growth of Platinum Nanoparticles with Most Characteristic Roughness Heteromorphologies and Nanostructures from Homogeneous Solution Reviewed International journal

    Nguyen Viet Long, Masayuki Nogami, Cao Minh Thi, Michitaka Ohtaki

    Journal of Advanced Microscopy Research   7   1 - 20   2012.9

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  • Structure and Thermoelectric Properties of Double-perovskite Oxides: Sr2-xKxFeMoO6 Reviewed International journal

    Tohru Sugahara, Teppei Araki, Michitaka Ohtaki, Katsuaki Suganuma

    Journal of the Ceramic Society of Japan   120 ( 6 )   2012.6

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  • New Experimental Evidences of Pt-Pd Bimetallic Nanoparticles with Core-Shell Configuration and Highly Fine-ordered Nanostructures by High-Resolution Electron Transmission Microscopy Reviewed International journal

    Nguyen Viet Long, Michitaka Ohtaki, Takashi Matsubara, Cao Minh Thi, Masayuki Nogami

    The Journal of Physical Chemistry C   116 ( 22 )   12265 - 12274   2012.6

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  • Novel Issues of Morphology, Size, and Structure of Pt Nanoparticles in Chemical Engineering: Surface Attachment, Aggregation or Agglomeration, Assembly, and Structural Changes Reviewed International journal

    Nguyen Viet Long, Cao Minh Thi, Masayuki Nogami, Michitaka Ohtaki

    New Journal of Chemistry   2012.6

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    DOI： 10.1039/C2NJ40027H

  • Structure and Thermoelectric Properties of Ca2-xSrxFeMoO6 (0 ≤ x ≤ 0.3) Double-perovskite Oxides Reviewed International journal

    133 ( 2-3 )   2012.4

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  • Sharp Cubic and Octahedral Morphologies of Poly(vinylpyrrolidone)-stabilised Platinum Nanoparticles by Polyol Method in Ethylene Glycol: Their Nucleation, Growth and Formation Mechanisms Reviewed International journal

    Nguyen Viet Long, Nguyen Duc Chien, Tomokatsu Hayakawa, Takashi Matsubara, Michitaka Ohtaki, Masayuki Nogami

    Journal of Experimental Nanoscience   7 ( 2 )   2012.3

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  • Thermoelectric Properties and Thermopower Enhancement of Al-doped ZnO with Nanosized Pore Structure Reviewed International journal

    Michitaka Ohtaki, Kazuhiko Araki

    Journal of the Ceramic Society of Japan   119 ( 11 )   2011.11

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  • A Comparative Study of Pt and Pt-Pd Core-shell Nanocatalysts Reviewed International journal

    Nguyen Viet Long, Michitaka Ohtaki, Tong Duy Hien, Jalem Randy, Masayuki Nogami

    Electrochimica Acta   56 ( 25 )   2011.10

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  • Synthesis and Characterization of Polyhedral and Quasi-sphere Non-polyhedral Pt Nanoparticles: Effects of Their Various Surface Morphologies and Sizes on Electrocatalytic Activity for Fuel Cell Applications Reviewed International journal

    Nguyen Viet Long, Michitaka Ohtaki, Tong Duy Hien, Jalem Randy, Masayuki Nogami

    Journal of Nanoparticle Research   13 ( 10 )   2011.10

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  • Structural and Semiconductor-to-metal Transitions of Double-perovskite Cobalt Oxide Sr2-xLaxCoTiO6-d with Enhanced Thermoelectric Capability Reviewed International journal

    Tohru Sugahara, Michitaka Ohtaki

    Applied Physics Letters   99 ( 6 )   2011.8

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  • Effects of Heat Treatment and Poly(vinylpyrrolidone) (PVP) Polymer on Electrocatalytic Activity of Polyhedral Pt Nanoparticles towards their Methanol Oxidation Reviewed International journal

    Nguyen Viet Long, Michitaka Ohtaki, Masayuki Nogami, Tong Duy Hien

    Colloid and Polymer Science   289 ( 12 )   2011.8

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  • Synthesis and Characterization of Pt-Pd Nanoparticles with Core-shell morphology: Nucleation and Overgrowth of the Pd Shells on the as-prepared and Defined Pt Seeds Reviewed International journal

    Nguyen Viet Long, Tong Dui Hien, Toru Asaka, Michitaka Ohtaki, Masayuki Nogami

    Journal of Alloys and Compounds   509 ( 29 )   2011.7

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  • Synthesis and Characterization of Polyhedral Pt Nanoparticles: Their Catalytic Property, Surface Attachments, Self-aggregation and Assembly Reviewed International journal

    Nguyen Viet Long, Michitaka Ohtaki, Masaya Uchida, Randy Jalem, Hirohito Hirata, Nguyen Duc Chien, Masayuki Nogami

    Journal of Colloid and Interface Science   359 ( 2 )   2011.7

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  • Synthesis and Characterization of Pt-Pd Alloy and Core-shell Bimetallic Nanoparticles for Direct Methanol Fuel Cells (DMFCs): Enhanced Electrocatalytic Properties of Well-shaped Core-shell morphologies and Nanostructures Reviewed International journal

    Nguyen Viet Long, Masaya Uchida, Jalem Randy, Hirohito Hirata, Nguyen Duc Chien, Michitaka Ohtaki, Masayuki Nogami

    International Journal of Hydrogen Energy   36 ( 14 )   2011.7

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  • Enhancement of the Thermoelectric Performance of p-Type Layered Oxide Ca3Co4O9+d Through Heavy Doping and Metallic Nanoinclusions Reviewed International journal

    Ngo Van Nong, Nini Pryds, Soren Linderoth, Michitaka Ohtaki

    Advanced Materials   23 ( 21 )   2011.6

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  • High-Temperature Thermoelectric and Microstructural Characteristics of Cobalt-Based Oxides with Ga Substituted on the Co-Site Reviewed International journal

    Ngo Van Nong, Syun-ichi. Yanagiya, Sonne Monica, Nini Pryds, Michitaka Ohtaki

    Journal of Electronic Materials   40 ( 5 )   2011.5

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  • High Temperature Thermoelectric Properties of Late Rare Earth-doped Ca3Co4-xGaxO9+d
 Reviewed International journal

    N. V. Nong, C.-J. Liu, M. Ohtaki

    J. Alloy Compd.   509   2011.1

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  • Improvement on the High Temperature Thermoelectric Performance of Ga-doped Misfit-layered Ca3Co4-xGaxO9+d (x = 0, 0.05, 0.1, and 0.2) Reviewed International journal

    N. V. Nong, C.-J. Liu, M. Ohtaki

    J. Alloy Compd.   491 ( 1-2 )   2010.1

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  • High Thermoelectric Performance of Dually Doped ZnO Ceramics Reviewed International journal

    M. Ohtaki, K. Araki, K. Yamamoto

    Journal of Electronic Materials   38   2009.6

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  • Thermoelectric Properties of Double-perovskite Oxide Sr2-xMxFeMoO6 (M = Ba, La) Reviewed International journal

    T. Sugahara, M. Ohtaki, T. Souma

    J. Ceram. Soc. Jpn.   2008.12

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  • Synthesis and Rietveld Analysis of New Thermoelectric Oxides F-doped Na1.6Co2O4 Reviewed International journal

    T. Souma, D. Isobe, M. Ohtaki

    Trans. Mater. Res. Soc. Jpn.   2008.6

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  • Thermoelectric Properties of Sintered ZnO Incorporating Nanovid Structure: Influence of the Size and Number Density of Nanovoids Reviewed International journal

    M. Ohtaki, R. Hayashi, K. Araki

    Proc. 26th Int. Conf. Thermoelectrics   2008.4

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  • Power Generation Characteristics of Oxide Thermoelectric Modules Incorporating Nanostructured ZnO Sintered Materials Reviewed International journal

    T. Souma, M. Ohtaki, K. Ohnishi, M. Shigeno , Y. Ohba, N. Nakamura, T. Shimozaki

    Proc. 26th Int. Conf. Thermoelectrics   2008.4

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  • Jointing Technique and Power Generation Characteristics of p-NaCo2O4/n-ZnO Oxide Thermoelectric Modules Reviewed International journal

    T. Souma, M. Ohtaki, M. Shigeno, Y. Ohba, N. Nakamura, T. Shimozaki

    Trans. Mater. Res. Soc. Jpn.   2007.6

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  • Enhanced Thermoelectric Performance of Nanostructured ZnO: A possibility of Selective Phonon Scattering and Carrier Energy Filtering by Nanovoid Structure Reviewed International journal

    M. Ohtaki, R. Hayashi

    Proc. 25th Int. Conf. Thermoelectrics   2006.11

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  • Fabrication and Power Generation Characteristics of p-NaCo2O4/n-ZnO Oxide Thermoelectric Modules Reviewed International journal

    T. Souma, M. Ohtaki, M. Shigeno, Y. Ohba, N. Nakamura, T. Shimozaki

    Proc. 25th Int. Conf. Thermoelectrics   2006.11

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  • Power factors of late rare earth-doped Ca3Co2O6 oxides Reviewed International journal

    Ngo Van Nong, Michitaka Ohtaki

    Solid State Communications   139 ( 5 )   232 - 234   2006.8

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    DOI： 10.1016/j.ssc.2006.05.033

  • High-temperature Thermoelectric properties of Late Rare Earth-doped Ca3Co2O6 Reviewed International journal

    N. V. Nong, M. Ohtaki

    Trans. Mater. Res. Soc. Jpn.   2006.6

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  • Enhanced Phonon Scattering by Oxygen Defects in Metal Oxides Reviewed International journal

    H. Hirobe, M. Ohtaki

    Trans. Mater. Res. Soc. Jpn.   2006.6

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  • Synthesis and Rietveld analysis of Zn4 - XCdxSb 3 bulk crystals in the Zn-rich region Reviewed International journal

    Takeshi Souma, Michitaka Ohtaki

    Journal of Alloys and Compounds   413 ( 1-2 )   289 - 297   2006.3

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    DOI： 10.1016/j.jallcom.2005.06.062

  • Synthesis and Thermoelectric Properties of Nanoporous Oxide Composites Containing Metal Nanoparticles International journal

    #Shinji Hirata and Michitaka Ohtaki

    Proceedings of the 18th Cross Straits Symposium on Energy and Environmental Science and Technology   18   35 - 36   2016.12

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  • Synthesis and Thermoelectric Properties of Layered Oxyselenides and Oxyphosphides International journal

    #Takuya Kagawa and Michitaka Ohtaki

    Proceedings of the 18th Cross Straits Symposium on Energy and Environmental Science and Technology   18   269 - 270   2016.12

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  • Thermoelectric Properties of Ferroelectric Oxides Reduced by Hydrogen International journal

    #Yoshinao Kai and Michitaka Ohtaki

    Proceedings of the 17th Cross Straits Symposium on Energy and Environmental Science and Technology   17   121 - 122   2015.12

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  • Synthesis of Nanosized Layered Compounds with Molecular Assembly Template and Characteristics Changes with Post-treatment International journal

    #Shin-ichi Hayano and Michitaka Ohtaki

    Proceedings of the 17th Cross Straits Symposium on Energy and Environmental Science and Technology   17   117 - 118   2015.12

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  • Synthesis of NaFeO2-xPx by P-doping of Layered Oxide NaFeO2 International journal

    #Yosuke Araki and Michitaka Ohtaki

    Proceedings of the 17th Cross Straits Symposium on Energy and Environmental Science and Technology   17   115 - 116   2015.12

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  • Synthesis of Low-dimensional Nanomaterials in Mesoporous Silica International journal

    #Fumihiro Ishibashi and Michitaka Ohtaki

    Proceedings of the 17th Cross Straits Symposium on Energy and Environmental Science and Technology   17   113 - 114   2015.12

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  • Synthesis and Thermoelectrics Properties of Nanoporous Oxide Formed by Selective Leaching of Metal Nanoparticles International journal

    #Shinji Hirata and Michitaka Ohtaki

    Proceedings of the 17th Cross Straits Symposium on Energy and Environmental Science and Technology   17   111 - 112   2015.12

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  • Switching the Thermal Conductivity by Phase Transitions in Metal Oxides International journal

    #Kei Watanabe and Michitaka Ohtaki

    Proceedings of the 17th Cross Straits Symposium on Energy and Environmental Science and Technology   17   105 - 106   2015.12

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  • Effects of microstructure on thermoelectric properties of dually doped ZnO International journal

    #Toshifumi Ogawa and Michitaka Ohtaki

    Proceedings of the 17th Cross Straits Symposium on Energy and Environmental Science and Technology   17   97 - 98   2015.12

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  • Oxide Thermoelectric Materials for Power Generation from Mid-to-High Temperature Unused Heat Energy International journal

    Michitaka Ohtaki

    Proceedings of the 16th Cross Straits Symposium on Energy and Environmental Science and Technology   29 - 32   2014.11

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  • Performance Stability of ZnO-based Oxide Thermoelectric Materials at High Temperature International journal

    Taiga Kuragaki, Michitaka Ohtaki

    Proceedings of the 16th Cross Straits Symposium on Energy and Environmental Science and Technology   181 - 182   2014.11

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  • Cage-like Structure Oxides AAl0.33Te1.67O6 with Unconventional Phonon Scattering International journal

    Kohei Mizuta, Michitaka Ohtaki

    Proceedings of the 16th Cross Straits Symposium on Energy and Environmental Science and Technology   175 - 176   2014.11

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  • Effects of morphology on the thermoelectric properties of Al-doped ZnO Reviewed

    RSC Advances   4 ( 24 )   12353 - 12361   2014.3

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    DOI： 10.1039/c3ra47617k

  • Preface Reviewed

    Shigeru Katsuyama, Koji Akai, Hiroaki Anno, Kazuhiro Hasezaki, Kaoru Kimura, Michitaka Ohtaki, Masatoshi Takeda

    Materials Transactions   55 ( 8 )   2014.1

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    DOI： 10.2320/matertrans.MPR2014904

  • La doped effects on structure and thermoelectric properties of Sr 2 MnMoO 6 double-perovskite oxides Reviewed

    Tohru Sugahara, Michitaka Ohtaki, Katsuaki Suganuma

    Journal of Asian Ceramic Societies   1 ( 3 )   282 - 288   2013.9

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    DOI： 10.1016/j.jascer.2013.06.006

  • Platinum and palladium nano-structured catalysts for polymer electrolyte fuel cells and direct methanol fuel cells Reviewed

    Nguyen Viet Long, Cao Minh Thi, Yang Yong, Masayuki Nogami, Michitaka Ohtaki

    Journal of nanoscience and nanotechnology   13 ( 7 )   4799 - 4824   2013.7

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    DOI： 10.1166/jnn.2013.7570

  • Synthesis and self-assembly of gold nanoparticles by chemically modified polyol methods under experimental control Reviewed

    Nguyen Viet Long, Michitaka Ohtaki, Masayoshi Yuasa, Satoshi Yoshida, Taiga Kuragaki, Cao Minh Thi, Masayuki Nogami

    Journal of Nanomaterials   2013   2013.4

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    DOI： 10.1155/2013/793125

  • The influence of α- And γ-Al2O3 phases on the thermoelectric properties of Al-doped ZnO Reviewed

    Li Han, Ngo Van Nong, Le Thanh Hung, Tim Holgate, Nini Pryds, Michitaka Ohtaki, Søren Linderoth

    555   291 - 296   2013.4

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    A systematic investigation on the microstructure and thermoelectric properties of Al-doped ZnO using α- and γ-Al2O 3 as dopants was conducted in order to understand the doping effect and its mechanism. The samples were prepared by the spark plasma sintering technique from precursors calcined at various temperatures. Clear differences in microstructure and thermoelectric properties were observed between the samples doped with α- and γ-Al2O3. At any given calcination temperature, γ-Al2O3 resulted in the formation of a larger amount of the ZnAl2O4 phase in the Al-doped ZnO samples. The average grain size was found to be smaller for the γ-Al2O3-doped samples than that for the α-Al2O3-doped ones under the same sintering condition. It is proposed that the ZnAl2O4 phase is the reason for the observed suppression of grain growth and also for the slightly reduced lattice thermal conductivity exhibited by these samples. The γ-Al2O3 promoted the substitution for donor impurities in ZnO, thus resulting in shrinkage of the unit cell volume and an increase in the electrical conductivity compared with the α-Al 2O3-doped ZnO. At a calcination temperature of 1173 K, the γ-Al2O3-doped sample showed a ZT value of 0.17 at 1173 K, which is 27% higher than that of the α-Al2O 3-doped sample.

    DOI： 10.1016/j.jallcom.2012.12.091

  • Erratum to Controlled synthesis and properties of palladium nanoparticles ((426-439), 10.1080/17458080.2010.543988) Reviewed

    Nguyen Viet Long, Tomokatsu Hayakawa, Takashi Matsubara, Nguyen Duc Chien, Michitaka Ohtaki, Masayuki Nogami

    Journal of Experimental Nanoscience   7 ( 6 )   711 - 712   2012.12

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    DOI： 10.1080/17458080.2012.755868

  • Pt and Pd based catalysts with novel alloy and core-shell nanostructures for practical applications in next fuel cells Patents and highlights Reviewed

    Nguyen Viet Long, Cao Minh Thi, Masayuki Nogami, Michitaka Ohtaki

    Recent Patents on Materials Science   5 ( 3 )   175 - 190   2012.7

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  • Controlled synthesis and properties of palladium nanoparticles Reviewed

    Nguyen Viet Long, Tomokatsu Hayakawa, Takashi Matsubara, Nguyen Duc Chien, Michitaka Ohtaki, Masayuki Nogami

    Journal of Experimental Nanoscience   7 ( 4 )   426 - 439   2012.7

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    DOI： 10.1080/17458080.2010.543988

  • Experimental evidences of crystal nucleation and growth of platinum nanoparticles with most characteristic roughness heteromorphologies and nanostructures from homogeneous solution Reviewed

    Nguyen Viet Long, Masayuki Nogami, Cao Minh Thi, Michitaka Ohtaki

    Journal of Advanced Microscopy Research   7 ( 2 )   98 - 117   2012.6

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    DOI： 10.1166/jamr.2012.1103

  • Novel issues of morphology, size, and structure of Pt nanoparticles in chemical engineering Surface attachment, aggregation or agglomeration, assembly, and structural changes Reviewed

    Nguyen Viet Long, Cao Minh Thi, Masayuki Nogami, Michitaka Ohtaki

    New Journal of Chemistry   36 ( 6 )   1320 - 1334   2012.6

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    DOI： 10.1039/c2nj40027h

  • New experimental evidences of Pt-Pd bimetallic nanoparticles with core-shell configuration and highly fine-ordered nanostructures by high-resolution electron transmission microscopy Reviewed

    Viet Long Nguyen, Michitaka Ohtaki, Takashi Matsubara, Minh Thi Cao, Masayuki Nogami

    Journal of Physical Chemistry C   116 ( 22 )   12265 - 12274   2012.6

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    DOI： 10.1021/jp303117y

  • Structure and thermoelectric properties of Ca 2-xSr xFeMoO 6 (0 ≤ x ≤ 0.3) double-perovskite oxides Reviewed

    133 ( 2-3 )   630 - 634   2012.4

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    The thermoelectric properties of double perovskite-type oxides Ca 2FeMoO 6 are investigated in terms of Sr substitution at the A site of the oxides. The electrical conductivity, σ, of Ca 2-xSr xFeMoO 6 (0 ≤ x ≤ 0.3) showed a metallic behavior, decreasing monotonically from ca. 10 3 S cm -1 at room temperature to ca. 10 2 S cm -1 at 1250 K. At room temperature, although the σ values of the oxides increased with increasing substitution level, x, the σ values maintained almost the same values at high temperature range of 1000-1250 K. The absolute values of the Seebeck coefficient, S, for the samples at x < 0.3 abruptly increase at around 1000 K. The Rietveld refinement of the XRD patterns of the oxides indicated that the anti-site defects in the oxides decreased with increasing Sr concentration. The power factor, S 2σ, of the oxides largely increased with increasing temperature; the S 2σ value of Ca 2FeMoO 6 was ca. 0.35 mW mK -2 at 1200 K, the largest value of all the samples in this study. Although the thermal conductivity, κ, of the oxides generally decreased from ca. 3.5 to 4.5 W mK -1 at room temperature to ca. 2-3 W mK -1 at 1050 K, the sample at x = 0.3 showed the lowest and most T-independent κ values, implying that the relative increase in the temperature is independent from the phonon-impurity scattering caused by the A-site substitution. The power factor of the oxides increased above 900 K; thereby, the dimensionless figure of merit, ZT = (S 2σ/κ)T, significantly increased at the same temperature range. The largest ZT value of 0.15 was observed for Ca 2FeMoO 6, Ca 1.9Sr 0.1FeMoO 6, and Ca 1.8Sr 0.2FeMoO 6 at 1250 K.

    DOI： 10.1016/j.matchemphys.2012.01.032

  • Sharp cubic and octahedral morphologies of poly(vinylpyrrolidone)-stabilised platinum nanoparticles by polyol method in ethylene glycol Their nucleation, growth and formation mechanisms Reviewed

    Nguyen Viet Long, Nguyen Duc Chien, Tomokatsu Hayakawa, Takashi Matsubara, Michitaka Ohtaki, Masayuki Nogami

    Journal of Experimental Nanoscience   7 ( 2 )   133 - 149   2012.3

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    DOI： 10.1080/17458080.2010.513017

  • Structure and morphology of platinum nanoparticles with critical new issues of low- and high-index facets Reviewed

    Nguyen Viet Long, Michitaka Ohtaki, Van Nong Ngo, Minh Thi Cao, Masayuki Nogami

    Advances in Natural Sciences: Nanoscience and Nanotechnology   3 ( 2 )   2012.1

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    DOI： 10.1088/2043-6262/3/2/025005

  • Structure and thermoelectric properties of double-perovskite oxides Sr2-xKxFeMoO6 Reviewed

    Tohru Sugahara, Teppei Araki, Michitaka Ohtaki, Katsuaki Suganuma

    Journal of the Ceramic Society of Japan   120 ( 1402 )   211 - 216   2012.1

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    DOI： 10.2109/jcersj2.120.211

  • Recent aspects of oxide thermoelectric materials for power generation from mid-to-high temperature heat source Reviewed

    Michitaka Ohtaki

    Journal of the Ceramic Society of Japan   119 ( 1395 )   770 - 775   2011.11

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    DOI： 10.2109/jcersj2.119.770

  • Thermoelectric properties and thermopower enhancement of Al-doped ZnO with nanosized pore structure Reviewed

    Michitaka Ohtaki, Kazuhiko Araki

    Journal of the Ceramic Society of Japan   119 ( 1395 )   813 - 816   2011.11

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    DOI： 10.2109/jcersj2.119.813

  • A comparative study of Pt and Pt-Pd core-shell nanocatalysts Reviewed

    Nguyen Viet Long, Michitaka Ohtaki, Tong Duy Hien, Jalem Randy, Masayuki Nogami

    Electrochimica Acta   56 ( 25 )   9133 - 9143   2011.10

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    DOI： 10.1016/j.electacta.2011.07.090

  • Synthesis and characterization of polyhedral and quasi-sphere non-polyhedral Pt nanoparticles Effects of their various surface morphologies and sizes on electrocatalytic activity for fuel cell applications Reviewed

    Nguyen Viet Long, Michitaka Ohtaki, Tong Duy Hien, Randy Jalem, Masayuki Nogami

    Journal of Nanoparticle Research   13 ( 10 )   5177 - 5191   2011.10

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    DOI： 10.1007/s11051-011-0503-z

  • Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation Reviewed

    Nguyen Viet Long, Michitaka Ohtaki, Masayuki Nogami, Tong Duy Hien

    Colloid and Polymer Science   289 ( 12 )   1373 - 1386   2011.8

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    DOI： 10.1007/s00396-011-2460-6

  • Structural and semiconductor-to-metal transitions of double-perovskite cobalt oxide Sr 2-xLa xCoTiO 6-δ with enhanced thermoelectric capability Reviewed

    99 ( 6 )   2011.8

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    The thermoelectric properties of double-perovskite oxide Sr 2-xLa xCoTiO 6-δ were revealed to vary anomalously with the La concentration, plausibly due to a structural transition found in this study. Although the temperature dependence of the resistivity and thermopower of the present oxide showed a semiconductor-to-metal transition similar to those observed for other perovskite-related Co oxides such as Sr 1-xY xCoO 3-δ, the transition temperature was more than 350 K higher, implying considerable stabilization of the low-spin state of Co ions in the double-perovskite oxide. Consequently, the operating temperature range of the oxide for potential thermoelectric applications was significantly expanded toward higher temperatures.

    DOI： 10.1063/1.3623476

  • Synthesis and characterization of Pt-Pd nanoparticles with core-shell morphology Nucleation and overgrowth of the Pd shells on the as-prepared and defined Pt seeds Reviewed

    Nguyen Viet Long, Tong Duy Hien, Toru Asaka, Michitaka Ohtaki, Masayuki Nogami

    Journal of Alloys and Compounds   509 ( 29 )   7702 - 7709   2011.7

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    DOI： 10.1016/j.jallcom.2011.04.031

  • Synthesis and characterization of Pt-Pd alloy and core-shell bimetallic nanoparticles for direct methanol fuel cells (DMFCs) Enhanced electrocatalytic properties of well-shaped core-shell morphologies and nanostructures Reviewed

    Nguyen Viet Long, Tong Duy Hien, Toru Asaka, Michitaka Ohtaki, Masayuki Nogami

    International Journal of Hydrogen Energy   36 ( 14 )   8478 - 8491   2011.7

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    DOI： 10.1016/j.ijhydene.2011.03.140

  • Synthesis and characterization of polyhedral Pt nanoparticles Their catalytic property, surface attachment, self-aggregation and assembly Reviewed

    Nguyen Viet Long, Michitaka Ohtaki, Masaya Uchida, Randy Jalem, Hirohito Hirata, Nguyen Duc Chien, Masayuki Nogami

    Journal of Colloid And Interface Science   359 ( 2 )   339 - 350   2011.7

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    DOI： 10.1016/j.jcis.2011.03.029

  • Enhancement of the thermoelectric performance of p-type layered oxide Ca3Co4O9+δ through heavy doping and metallic nanoinclusions Reviewed

    Ngo Van Nong, Nini Pryds, Søren Linderoth, Michitaka Ohtaki

    23 ( 21 )   2484 - 2490   2011.6

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    An effective way to improve the thermoelectric performance (ZT) of layered structured oxide materials by carefully choosing heavy ion doping and introducing metallic nanoinclusions is proposed. A p-type oxide material with remarkable highly improved ZT is successfully fabricated using this approach. Long-term durability at high temperature testing confirms this material is a very promising p-type material for high temperature power generation.

    DOI： 10.1002/adma.201004782

  • High-temperature thermoelectric and microstructural characteristics of cobalt-based oxides with ga substituted on the Co-site Reviewed

    N. V. Nong, S. Yanagiya, S. Monica, N. Pryds, M. Ohtaki

    Journal of Electronic Materials   40 ( 5 )   716 - 722   2011.5

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    DOI： 10.1007/s11664-011-1524-1

  • Highly monodisperse cubic and octahedral rhodium nanocrystals Their evolutions from sharp polyhedrons into branched nanostructures and surface-enhanced Raman scattering Reviewed

    Nguyen Viet Long, Nguyen Duc Chien, Hirohito Hirata, Takashi Matsubara, Michitaka Ohtaki, Masayuki Nogami

    Journal of Crystal Growth   320 ( 1 )   78 - 89   2011.4

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    DOI： 10.1016/j.jcrysgro.2011.02.006

  • Control of Morphology of Pt Nanoparticles and Pt-Pd Core-Shell Nanoparticles Reviewed International journal

    Nguyen V. Long, Michitaka Ohtaki, Masayuki Nogami

    Journal of Novel Carbon Resource Sciences   3   2011.2

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  • High-temperature thermoelectric properties of late rare earth-doped Ca 3Co4O9+δ Reviewed

    509 ( 3 )   977 - 981   2011.1

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    Misfit-layered oxides Ca3-xLnxCo4O 9+δ with Ln = Dy, Er, Ho, and Lu were synthesized using solid state reactions. The resulting samples were hot-pressed (HP) at 1123 K in air for 2 h under a uniaxial pressure of 60 MPa. Thermoelectric properties of Ca3-xLnxCo4O9+δ were investigated up to 1200 K. Both the Seebeck coefficient and electrical resistivity increase upon Ln substitution for Ca. Among the Ln-doped samples, the magnitude of Seebeck coefficient tends to increase with decreasing ionic radius of Ln3+. The Ln-doped samples exhibit a lower thermal conductivity than the non-doped one due to a decrease of their lattice thermal conductivity. The dimensionless figure of merit, ZT, reaches 0.36 at 1073 K for the Ca2.8Lu0.2Co4O9+δ sample, which is about 1.6 times larger than that for the non-doped counterpart.

    DOI： 10.1016/j.jallcom.2010.09.150

  • 熱-電気直接エネルギー変換のための酸化物熱電材料 (研究特集)

    九州大学グローバルCOEプログラム新炭素資源学ニューズレター   3   10 - 15   2010.4

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  • Improvement on the high temperature thermoelectric performance of Ga-doped misfit-layered Ca3Co4-xGaxO9+δ (x = 0, 0.05, 0.1, and 0.2) Reviewed

    491 ( 1-2 )   53 - 56   2010.2

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    Highly densified Ca3Co4-xGaxO9+δ (0 ≤ x ≤ 0.2) misfit-layered thermoelectric oxides are prepared by solid state reaction methods followed by hot-pressing. Thermoelectric properties of the samples are measured from room temperature to 1200 K. The results show that partial Ga substitution leads to a simultaneous increase of the electrical conductivity and thermopower. The Ga-doped samples have lower thermal conductivity than that of the non-doped sample in the high temperature region (>600 K). The x = 0.05 sample shows a higher figure of merit (Z = 3.37 × 10-4 K-1) than that of the non-doped sample (Z = 1.98 × 10-4 K-1) at 1073 K, indicating significant improvement of the thermoelectric performance of Ca3Co4O9+δ by partial Ga substitution for Co.

    DOI： 10.1016/j.jallcom.2009.11.009

  • Chemical synthesis and characterization of palladium nanoparticles Reviewed

    Nguyen Viet Long, Duc Chien Nguyen, Hirohito Hirata, Michitaka Ohtaki, Tomokatsu Hayakawa, Masayuki Nogami

    Advances in Natural Sciences: Nanoscience and Nanotechnology   1 ( 3 )   2010.1

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    DOI： 10.1088/2043-6262/1/3/035012

  • Anomalous Reduction in the Thermal Conductivity of Perovskite-type Oxide on a Structural Phase Transition between the Perovskite and Brownmillerite Structures International journal

    S. Teraoka, T. Sugahara, M. Ohtaki

    Proc. 11th Cross Straits Symp. Mater. Ener. Environ. Sci.   2009.11

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  • Synthesis and Thermoelectric Properties of Nanoporous Al-doped ZnO International journal

    G. Yamamoto, M. Ohtaki

    Proc. 11th Cross Straits Symp. Mater. Ener. Environ. Sci.   2009.11

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  • Thermoelectric Properties of co-doped ZnO Oxides for Heat-to-Electricity Direct Conversion International journal

    K. Yamamoto, M. Ohtaki

    Proc. 11th Cross Straits Symp. Mater. Ener. Environ. Sci.   2009.11

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  • Molecular Assembly-assisted Synthesis and Photocatalytic Activity of Lamellar Sodium Tantalate International journal

    M. Mori, M. Ohtaki

    Proc. 11th Cross Straits Symp. Mater. Ener. Environ. Sci.   2009.11

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  • High thermoelectric performance of dually doped ZnO ceramics Reviewed

    Michitaka Ohtaki, Kazuhiko Araki, Kiyoshi Yamamoto

    Journal of Electronic Materials   38 ( 7 )   1234 - 1238   2009.7

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    DOI： 10.1007/s11664-009-0816-1

  • Special issue on thermoelectric conversion materials V Preface Reviewed

    Kaoru Kimura, Ken Ichi Takagi, Takeshi Koyanagi, Michitaka Ohtaki, Hidero Unuma, Shigeru Katsuyama, Kouji Akai, Masatoshi Takeda

    Materials Transactions   50 ( 7 )   1581   2009.7

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  • Thermoelectric properties of double-perovskite oxide Sr2-xM xFeMoO6 [M = Ba, La) Reviewed

    Tohra Sugahara, Michitaka Ohtaki, Takeshi Souma

    Journal of the Ceramic Society of Japan   116 ( 1360 )   1278 - 1282   2008.12

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    DOI： 10.2109/jcersj2.116.1278

  • Aサイト置換したダブルペロブスカイト型酸化物A2B'MoO6の熱電特性

    菅原徹, 大瀧倫卓, 相馬岳

    九州大学大学院総合理工学報告   2008.9

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  • Special issue on thermoelectric conversion materials IV Preface Reviewed

    Kaoru Kimura, Ken Ichi Takagi, Takeshi Koyanagi, Michitaka Ohtaki, Hidero Unuma, Shigeru Katsuyama, Kouji Akai, Masatoshi Takeda

    Materials Transactions   49 ( 8 )   2008.8

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  • Aサイト置換したダブルペロブスカイト型酸化物A₂B´MoO₆の熱電特性 Reviewed

    菅原 徹, Michitaka Ohtaki, 相馬 岳

    九州大学大学院総合理工学報告   30 ( 1 )   8 - 13   2008.6

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    DOI： 10.15017/14598

  • 熱電酸化物セラミックスのナノ構造制御と熱電特性

    大瀧 倫卓

    128 ( 5 )   293 - 295   2008.5

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    This article has no abstract.

    DOI： 10.1541/ieejjournal.128.293

  • Power generation characteristics of oxide thermoelectric modules incorporating nanostructured ZnO sintered materials

    Takeshi Souma, Michitaka Ohtaki, Kyohei Ohnishi, Masayuki Shigeno, Yasuhiro Ohba, Toshitada Shimozaki

    ICT'07 - 26th International Conference on Thermoelectrics Proceedings ICT'07 - 26th International Conference on Thermoelectrics   38 - 41   2007.12

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    DOI： 10.1109/ICT.2007.4569418

  • Thermoelectric properties of sintered ZnO incorporating nanovid structure Influence of the size and number density of nanovoids

    Michitaka Ohtaki, Ryosuke Hayashi, Kazuhiko Araki

    ICT'07 - 26th International Conference on Thermoelectrics Proceedings ICT'07 - 26th International Conference on Thermoelectrics   112 - 116   2007.12

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    DOI： 10.1109/ICT.2007.4569436

  • Development of Oxide Thermoelectric Modules with a High Density Packing by Using Ceramic Honeycomb International journal

    K. Ohnishi, M. Ohtaki

    Proc. 9th Cross Straits Symp. Mater. Ener. Environ. Sci.   2007.11

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  • Thermoelectric Properties of Double-Perovskite Oxide A2B'B"O6 with A-Site Substitution International journal

    T. Sugahara, M. Ohtaki, T. Souma

    Proc. 9th Cross Straits Symp. Mater. Ener. Environ. Sci.   2007.11

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  • Suppression of Thermal Conductivity In Metal Oxides Due to Order-Disorder Transition of Oxide Ion Sublattice International journal

    T. Masuda, M. Ohtaki

    Proc. 9th Cross Straits Symp. Mater. Ener. Environ. Sci.   2007.11

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  • Molecular Templating Electrochemical Synthesis of Nano-Superlattice Thin Films of Layered Oxides and Their Electromagnetic Properties International journal

    H. Ikeda, M. Ohtaki

    Proc. 9th Cross Straits Symp. Mater. Ener. Environ. Sci.   2007.11

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  • 熱エネルギーを電気に変えるセラミックス 新しい酸化物熱電変換材料の開発

    30 ( 9 )   690 - 696   2007.9

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  • Special issue on thermoelectric conversion materials III Reviewed

    Kaoru Kimura, Ken Ichi Takagi, Takeshi Koyanagi, Michitaka Ohtaki, Hidero Unuma, Shigeru Katsuyama, Kouji Akai, Masatoshi Takeda

    Materials Transactions   48 ( 8 )   2072   2007.8

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  • Enhanced thermoelectric performance of nanostructured ZnO A possibility of selective phonon scattering and carrier energy filtering by nanovoid structure

    Michitaka Ohtaki, Ryosuke Hayashi

    ICT'06 - 25th International Conference on Thermoelectrics Proceedings ICT'06 - 25th International Conference on Thermoelectrics   276 - 279   2006.12

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    DOI： 10.1109/ICT.2006.331368

  • Thermoelectric properties and local electronic structure of rare earth-doped Ca3Co2O6

    N. V. Nong, Michitaka Ohtaki

    ICT'06 - 25th International Conference on Thermoelectrics Proceedings ICT'06 - 25th International Conference on Thermoelectrics   62 - 65   2006.12

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    DOI： 10.1109/ICT.2006.331270

  • Relation between Zn content and thermoelectric properties of Zn 4+xSb3 (-0.12≤x≤0.12)

    594 - 597   2006.12

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    A series of seven bulk crystals of Zn4+xSb3 (-0.12 ≤ x ≤ 0.12) are successfully prepared, and the relation between the Zn content and the thermoelectric properties is investigated. The sample with the nominal composition of Zn3.96Sb3 (x = -0.04) contain the maximum mass fraction of Zn4Sb3. The shapes of the S(T) and ρ(T) curves are drastically changed with varying x in the temperature range from 300 K to 700 K. Whereas the lower x leads to lower ρ, the magnitude of S unchanges, resulting in the fact that the power factor of the Zn-poor compositions in the Zn4+xSb3 system is lower than that of the Zn-rich compositions. The details of the influence of the Zn content and the scope of the improvement of the durability are discussed.

    DOI： 10.1109/ICT.2006.331384

  • Optimization of synthesis conditions for CoSb3 compounds prepared by Sb self-flux method

    Takeshi Souma, Michitaka Ohtaki

    ICT'06 - 25th International Conference on Thermoelectrics Proceedings ICT'06 - 25th International Conference on Thermoelectrics   598 - 602   2006.12

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    DOI： 10.1109/ICT.2006.331385

  • Fabrication and power generation characteristics of p-NaCo 2O4/n-ZnO oxide thermoelectric modules

    Takeshi Souma, Michitaka Ohtaki, Masayuki Shigeno, Yasuhiro Ohba, Norikazu Nakamura, Toshitada Shimozaki

    ICT'06 - 25th International Conference on Thermoelectrics Proceedings ICT'06 - 25th International Conference on Thermoelectrics   603 - 606   2006.12

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    DOI： 10.1109/ICT.2006.331386

  • Thermoelectric Properties and Local Electronic Structure of Rare Earth-doped Ca3Co2O6 Reviewed International journal

    N. V. Nong, M. Ohtaki

    Proc. 25th Int. Conf. Thermoelectrics   2006.11

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  • Optimization of Synthesis Conditions for CoSb3 Compounds Prepared by Sb Self-flux Method Reviewed International journal

    T. Souma, M. Ohtaki

    Proc. 25th Int. Conf. Thermoelectrics   2006.11

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  • Relation between Zn Content and Thermoelectric Properties of Zn4+xSb3 (-0.12≦x≦0.12) Reviewed International journal

    2006.11

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  • Structural Transition and Magnetic Field Induced Strain in Ni50Mn26.5Ga23.5 Alloy

    N. V. Nong, M. Ohtaki

    2006.10

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  • Special issue on thermoelectric conversion materials II Reviewed

    Kaoru Kimura, Ken Ichi Takagi, Takeshi Koyanagi, Michitaka Ohtaki, Hidero Unuma, Shigeru Katsuyama, Koji Akai, Masatoshi Takeda

    Materials Transactions   47 ( 6 )   1421   2006.6

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  • Comparison of structural parameters for Zn4-xCd xSb3 compounds analyzed by the Rietveld method using two crystallographic models Reviewed International journal

    Takeshi Souma, Michitaka Ohtaki

    ICT'05: 24th International Conference on Thermoelectrics Proceedings - ICT'05 24th International Conference on Thermoelectrics   410 - 413   2005.12

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    DOI： 10.1109/ICT.2005.1519973

  • The influence of composition change on structural and magnetic properties of non-stoichiometric Ni-Mn-Ga alloys Reviewed International journal

    N. V. Nong, N. P. Thuy, Y. D. Yao, Michitaka Ohtaki, N. T. Lam

    INTERMAG ASIA 2005: Digests of the IEEE International Magnetics Conference INTERMAG ASIA 2005 Digests of the IEEE International Magnetics Conference   2005.12

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  • Synthesis and Rietveld analysis for CoSb3 compounds prepared by Sb self-flux method Reviewed International journal

    Takeshi Souma, Michitaka Ohtaki

    ICT'05: 24th International Conference on Thermoelectrics Proceedings - ICT'05 24th International Conference on Thermoelectrics   121 - 124   2005.12

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    DOI： 10.1109/ICT.2005.1519903

  • Strong influence of CO2 partial pressure on inhomogeneous Na distributions and the thermoelectric performance of polycrystalline NaCo 2C4 Reviewed International journal

    Michitaka Ohtaki, Kimihiro Shouji

    ICT'05: 24th International Conference on Thermoelectrics Proceedings - ICT'05 24th International Conference on Thermoelectrics   2005   472 - 475   2005.12

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    DOI： 10.1109/ICT.2005.1519988

  • Evaluation of durability of thermoelectric properties for Zn 4Sb3 compounds Reviewed International journal

    Takeshi Souma, Michitaka Ohtaki

    ICT'05: 24th International Conference on Thermoelectrics Proceedings - ICT'05 24th International Conference on Thermoelectrics   414 - 417   2005.12

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    DOI： 10.1109/ICT.2005.1519974

  • 新しい熱電変換材料としての金属酸化物--層状コバルト酸化物を中心に (特集:環境に優しい熱電変換材料の最新技術)

    月刊エコインダストリー   10 ( 10 )   13 - 20   2005.10

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  • Materials Transations Preface Reviewed

    Kaoru Kimura, Ken Ichi Takagi, Takeshi Koyanagi, Michitaka Ohtaki

    Materials Transactions   46 ( 7 )   2005.7

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  • 遷移金属カチオンを用いたイオン交換によるNaCo2O4のサイト選択元素置換 Reviewed International journal

    113 ( 1318 )   400 - 404   2005.6

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    Incorporation of Ni ions into two different sites of the Na and Co sites of NaCo2O4 was carried out by the processes of conventional elemental substitution for Co ion and solid state ion exchange of mobile Na+ ion. The changes of the lattice parameters of "substituted" and "exchanged" samples were different, suggesting that the Ni ions occupy different sites. The Ni-substituted sample for Co showed a significant decrease of Seebeck coefficient keeping the electrical conductivity almost intact, while Ni-exchanged samples for Na showed a lower electrical conductivity than that of the non-substituted sample with keeping the Seebeck coefficient unchanged. These results suggest that Ni cations introduced to the Co site decouples the Co-Co spin exchange, whereas those at the Na site compensates positive holes by providing conduction electrons.

    DOI： 10.2109/jcersj.113.400

  • Site-selective substitution by transition metal cations for NaCo 2O4 via ion-exchange Reviewed

    Yoshihiro Nojiri, Michitaka Ohtaki

    Journal of the Ceramic Society of Japan   113 ( 1318 )   400 - 404   2005.1

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    DOI： 10.2109/jcersj.113.400

  • セラミックスの電磁気的・光学的性質 VI. 熱電性セラミックスの熱電的性質とその測定法

    セラミックス   40 ( 1 )   39 - 46   2005.1

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  • 未利用熱エネルギー回収に向けた次世代酸化物熱電変換材料の開発

    月刊エコインダストリー   8 ( 3 )   35 - 43   2003.3

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  • Sintering process and nonstoichiometry of NaCo2O4 layered thermoelectric oxide Reviewed International journal

    M. Ohtaki, K. Shouji

    22nd International Conference on Thermoelectrics, ICT 2003 Proceedings ICT 2003 - 22nd International Conference on Thermoelectrics   227 - 230   2003.1

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    DOI： 10.1109/ICT.2003.1287490

  • 電子セラミックスの最先端研究動向と将来展望

    亀原 伸男, 竹中 正, 篠崎 和夫, 米澤 正智, Michitaka Ohtaki

    セラミックス   38 ( 1 )   58 - 61   2003.1

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  • Thermoelectric properties of Al-doped ZnO sintered with nanosized void forming agents Reviewed International journal

    Michitaka Ohtaki, S. Maehara, S. Shige

    22nd International Conference on Thermoelectrics, ICT 2003 Proceedings ICT 2003 - 22nd International Conference on Thermoelectrics   171 - 174   2003.1

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    DOI： 10.1109/ICT.2003.1287476

  • Site-selective doping of transition metal cations into NaCo2O4 Reviewed International journal

    Yoshihiro Nojiri, Michitaka Ohtaki

    21st International Conference on Thermoelectrics, ICT 2002 Proceedings ICT 2002: 21st International Conference on Thermoelectrics   2002-January   234 - 237   2002.12

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    DOI： 10.1109/ICT.2002.1190308

  • 酸化物系熱電変換材料の研究状況 非従来型新材料の開発から発電素子実験まで

    熱処理   41 ( 3 )   114 - 122   2001.6

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  • 液晶鋳型-水熱処理法による低次元量子閉じ込め構造酸化物半導体の合成と光物性 Reviewed

    Michitaka Ohtaki, 三宅 こずえ

    九州大学大学院総合理工学報告   22 ( 4 )   359 - 364   2001.3

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    Oxide semiconductors with MCM-50--like layered structures are synthesized by liquid crystal templating followed by hydrothermal treatment. The band gap energy of hydrothermal-treated lamellar TiO$_2$ shows a substantial blue shift of $Delta E_g=0.31$~eV. The thickness of the 2-dimensional TiO$_2$ sheets estimated from $Delta E_g$ by using Blus' equation describing the quantum-confinement effect agrees within a factor of 1.5 with that determined from TEM observation. A new photoluminescence peak appears at $ca.$ 380~nm, being in good accordance with the wider band gap energy of the lamellar TiO$_2$. Lamellar Fe$_2$O$_3$ and Bi$_2$O$_3$ show sharp absorption peaks at the lower energy of the absorption edges, suggesting exciton absorption observable at root temperature.

    DOI： 10.15017/16613

  • Synthesis of TiO2/CdS nanocomposite via TiO2 coating on CdS nanoparticles by compartmentalized hydrolysis of Ti alkoxide Reviewed

    H. Fujii, K. Inata, Michitaka Ohtaki, K. Eguchi, H. Arai

    Journal of Materials Science   36 ( 2 )   527 - 532   2001.1

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    DOI： 10.1023/A:1004857419242

  • Threshold conditions for bulk second-order nonlinearity and near-surface second-order nonlinearity in thermally poled infrasil silica Reviewed

    Mingxin Qiu, Toru Mizunami, Teruo Shimomura, Michitaka Ohtaki

    Optical Review   8 ( 3 )   159 - 162   2001.1

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    DOI： 10.1007/s10043-001-0159-5

  • 2段階焼結法で合成したNaCo_2O_4焼結体の微細構造と熱電特性 Reviewed

    大瀧 倫卓, 前田 英司

    47 ( 11 )   1159 - 1164   2000.11

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    The thermoelectric properties of sintered bodies of NaCo2O4, which is so far the most promising p-type candidate for oxide thermoelectric material, are investigated in terms of their sintering conditions. Double-step sintering, for which single-phase NaCo2O4 obtained by calcination and sintering with addition of 10% excess of Na each time is re-ground and sintered again, is revealed to attain a marked improvement in the thermoelectric performance of the oxide. The improvement is due to increase in both Seebeck coefficient and electrical conductivity, and is attributed to a distinct enhancement of the two-dimensionality in the crystallites constituting the sintered body. The oxide sintered body consequently attains the figure-of-merit of 0.88×10-3K-1 at 600°C, and the maximum ZT of 0.78 at 800°C.

    DOI： 10.2497/jjspm.47.1159

  • Microstructures and thermoelectric properties of NaCo2O4 prepared by double-step sintering Reviewed

    Michitaka Ohtaki, Eishi Maeda

    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy   47 ( 11 )   1159 - 1164   2000.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2497/jjspm.47.1159

  • AlドープZnO系酸化物の熱電特性 (特集 応用の拡がる熱電変換素子の新展開)

    マテリアルインテグレ-ション   13 ( 7 )   27 - 32   2000.7

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Intramolecularly selective decomposition of surfactant molecules on photocatalytic oxidative degradation over TiO2 photocatalyst Reviewed

    Michitaka Ohtaki, Hirofumi Sato, Hiroyuki Fujii, Koichi Eguchi

    Journal of Molecular Catalysis A: Chemical   155 ( 1-2 )   121 - 129   2000.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/S1381-1169(99)00325-8

  • Thermoelectric properties and crystal chemistry of promising oxide candidate NaxCoO2 Reviewed

    Michitaka Ohtaki

    18th International Conference on Thermoelectrics (ICT'99) International Conference on Thermoelectrics, ICT, Proceedings   565 - 568   1999.12

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Thermoelectric Properties of Chevrel-Type Sulfides AMo_6S_8 (A=Fe, Ni, Ag, Zn, Sn, Pb, Cu) Reviewed

    107 ( 1248 )   697 - 701   1999.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2109/jcersj.107.697

  • メソポーラス二酸化チタンの合成とその物性 (特集 自己組織化による無機マテリアル)

    化学工業   50 ( 6 )   437 - 443   1999.6

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Thermoelectric properties of chevrel-type sulfides AMo6S8 (A=Fe, Ni, Ag, Zn, Sn, Pb, Cu) Reviewed

    Toshiki Tsubota, Michitaka Ohtaki, Koichi Eguchi

    Journal of the Ceramic Society of Japan   107 ( 8 )   697 - 701   1999.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.2109/jcersj.107.697

  • Synthesis and photocatalytic activity of lamellar titanium oxide formed by surfactant bilayer templating Reviewed

    H. Fujii, Michitaka Ohtaki, K. Eguchi

    Journal of the American Chemical Society   120 ( 27 )   6832 - 6833   1998.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/ja980430d

  • Preparation and photocatalytic activities of a semiconductor composite of CdS embedded in a TiO2 gel as a stable oxide semiconducting matrix Reviewed

    Hiroyuki Fujii, Michitaka Ohtaki, Koichi Eguchi, Hiromichi Arai

    Journal of Molecular Catalysis A: Chemical   129 ( 1 )   61 - 68   1998.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/S1381-1169(97)00132-5

  • Solid oxide fuel cell with composite electrolyte consisting of samaria-doped ceria and yttria-stabilized zirconia Reviewed

    Y. Mishima, H. Mitsuyasu, M. Ohtaki, K. Eguchi

    Journal of the Electrochemical Society   145 ( 3 )   1004 - 1007   1998.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1149/1.1838378

  • PO2-dependent nonohmic current-voltage characteristics and current-induced redox behavior of junctioned SrTiO3 Reviewed

    Michitaka Ohtaki, Misako Ozaki, Koichi Eguchi

    Journal of the Electrochemical Society   145 ( 4 )   1165 - 1173   1998.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1149/1.1838433

  • Transport properties and thermoelectric performance of (Zn1-yMgy)1-xAlxO Reviewed

    Toshiki Tsubota, Michitaka Ohtaki, Koichi Eguchi, Hiromichi Arai

    Journal of Materials Chemistry   8 ( 2 )   409 - 412   1998.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/a706213c

  • Selective Incorporation of Inorganic Precursors into the Channels of MCM-41 by Molecular Assembly Template as a Hydrophobic Carrier Reviewed

    Michitaka Ohtaki, Kazumasa Inata, Koichi Eguchi

    Chemistry of Materials   10 ( 10 )   2582 - 2584   1998.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/cm9801744

  • Retarded decomposition of the trimethylammonium moiety observed on photocatalytic mineralization of surfactants over TiO2 photocatalyst Reviewed

    Hiroyuki Fujii, Hirofumi Sato, Michitaka Ohtaki, Koichi Eguchi, Hiromichi Arai

    Chemistry Letters   ( 3 )   251 - 252   1998.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1246/cl.1998.251

  • Thermoelectric properties of oxide solid solutions based on Al-doped ZnO

    Michitaka Ohtaki, Toshiki Tsubota, Koichi Eguchi

    Proceedings of the 1998 17th International Conference on Thermoelectrics, ICT International Conference on Thermoelectrics, ICT, Proceedings   610 - 613   1998

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    Language：English   Publishing type：Research paper (other academic)  

  • Photocatalytic activities of CdS crystallites embedded in TiO2 gel as a stable semiconducting matrix Reviewed

    H. Fujii, Michitaka Ohtaki, K. Eguchi, H. Arai

    Journal of Materials Science Letters   16 ( 13 )   1086 - 1088   1997.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1023/A:1018599229805

  • Thermoelectric properties of Al-doped ZnO as a promising oxide material for high-temperature thermoelectric conversion Reviewed

    Toshiki Tsubota, Michitaka Ohtaki, Koichi Eguchi, Hiromichi Arai

    Journal of Materials Chemistry   7 ( 1 )   85 - 90   1997.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/a602506d

  • High-temperature thermoelectric properties of (Zn1-xAlx)O Reviewed

    Michitaka Ohtaki, Toshiki Tsubota, Koichi Eguchi, Hiromichi Arai

    Journal of Applied Physics   79 ( 3 )   1816 - 1818   1996.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1063/1.360976

  • Immunochemical detection of methamphetamine using polymer-protected ultrafine platinum particles Reviewed

    Emi Hifumi, Rie Kanmei, Masanori Ishimaru, Kosuke Shimizu, Michitaka Ohtaki, Taizo Uda

    Journal of Fermentation and Bioengineering   82 ( 4 )   417 - 419   1996.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/0922-338X(96)89164-1

  • Preparation of nanosized CdS particles using decomposition of P2S5 in a non-aqueous solvent Reviewed

    Michitaka Ohtaki, Kunihiro Oda, Koichi Eguchi, Hiromichi Arai

    Chemical Communications   ( 10 )   1209 - 1210   1996.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/cc9960001209

  • Electrical transport properties and high-temperature thermoelectric performance of (Ca0.9M0.1)MnO3 (M = Y, La, Ce, Sm, In, Sn, Sb, Pb, Bi) Reviewed

    Michitaka Ohtaki, Hisako Koga, Tsutomu Tokunaga, Koichi Eguchi, Hiromichi Arai

    Journal of Solid State Chemistry   120 ( 1 )   105 - 111   1995.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1006/jssc.1995.1384

  • Atomic force microscopic observation of molybdenum trioxide surface Reviewed

    Koichi Eguchi, Shigeru Kawakami, Michitaka Ohtaki, Hiromichi Arai

    Journal of the Ceramic Society of Japan. International ed.   103 ( 1 )   73 - 77   1995.1

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Application of polymer-protected ultrafine platinum particles to the immunological detection of human serum albumin Reviewed

    Taizo Uda, Rie Kanmei, Shigeru Akasofu, Emi Hifumi, Michitaka Ohtaki

    Analytical Biochemistry   218 ( 2 )   259 - 264   1994.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1006/abio.1994.1176

  • High-temperature thermoelectric properties of ln2O3-based mixed oxides and their applicability to thermoelectric power generation Reviewed

    Michitaka Ohtaki, Daisuke Ogura, Koichi Eguchi, Hiromichi Arai

    Journal of Materials Chemistry   4 ( 5 )   653 - 656   1994.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/JM9940400653

  • Oxygen sensing properties of Ti-doped Nb2O5 Reviewed

    Michitaka Ohtaki, Jun Peng, Koichi Eguchi, Hiromichi Arai

    Sensors and Actuators: B. Chemical   14 ( 1-3 )   495 - 496   1993.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/0925-4005(93)85062-F

  • Effect of barium substitution at the yttrium site in YBa2Cu3O7-y prepared from nitrate precursors Reviewed

    Michitaka Ohtaki, K. Sumiyoshi, T. Tamai, K. Eguchi, H. Arai

    Journal of Materials Science Letters   11 ( 5 )   249 - 251   1992.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/BF00729402

  • Substrate selectivity by the polymer support in hydrogenation over crosslinked polymer-immobilized metal catalysts Reviewed

    Naoki Toshima, Michitaka Ohtaki, Toshiharu Teranishi

    Reactive Polymers   15 ( C )   135 - 145   1991.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/0923-1137(91)90157-J

  • Effects of Polymer Support on the Substrate Selectivity of Covalently Immobilized Ultrafine Rhodium Particles as a Catalyst for Olefin Hydrogenation Reviewed

    Michitaka Ohtak, Makoto Komiyama, Hidefumi Hirai, Naoki Toshima

    Macromolecules   24 ( 20 )   5567 - 5572   1991.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/ma00020a014

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Books

  • Oxide Thin Films, Multilayers and Nanocomposites

    Michitaka Ohtaki（ Role： Joint author）

    Springer  2015.3 

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    Responsible for pages：Chapter 7, Nanostructured Oxide Thermoelectric Materials with Enhanced Phonon Scattering, pp. 109-122.   Language：English   Book type：Scholarly book

  • 熱電変換材料 実用・活用を目指した設計と開発 ～材料技術/モジュール化/フレキシブル化/実用例～

    大瀧 倫卓（ Role： Joint author）

    (株)情報機構  2014.12 

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    Responsible for pages：第2章第3節, 最新の酸化物熱電変換材料の構造・物性とモジュール化, pp.61-71.   Language：Japanese   Book type：Scholarly book

  • 化学便覧応用化学編第7版

    大瀧 倫卓（ Role： Joint author）

    丸善出版  2014.1 

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    Responsible for pages：14.2.4. 熱電変換材料   Language：Japanese   Book type：Scholarly book

  • サーマルマネジメント～余熱・排熱の制御と有効利用～

    大瀧 倫卓（ Role： Joint author）

    (株)エヌ・ティー・エス  2013.4 

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    Responsible for pages：第3編第1章第1節1.2, 排熱回収用熱電材料の開発動向, pp. 375-388.   Language：Japanese   Book type：Scholarly book

  • エネルギーハーベスティング技術の最新動向

    大瀧倫卓（ Role： Joint author）

    シーエムシー出版  2010.10 

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    Responsible for pages：pp.147-163   Language：Japanese   Book type：Scholarly book

  • 熱電変換技術ハンドブック

    日本熱電学会編（ Role： Joint author）

    (株)エヌ・ティー・エス  2008.12 

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    Responsible for pages：「熱電材料としての酸化物」pp. 204-213   Language：Japanese   Book type：Scholarly book

  • 熱電変換システムの高効率化・高信頼性化技術

    梶川武信、寺崎一郎、大瀧倫卓、他27名（ Role： Joint author）

    技術情報協会  2006.9 

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    Responsible for pages：第2節, pp. 28-45.   Language：Japanese   Book type：Scholarly book

  • Thermoelectrics Handbook: macro to nano

    Ed. D. M. Rowe（ Role： Joint author）

    CRC Press  2006.1 

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    Responsible for pages：ISBN: 0-8493-2264-2, pp.35-1〜35-15   Language：English   Book type：Scholarly book

    Kunihito KOUMOTO, Ichiro TERASAKI, Tsuyoshi KAJITANI, Michitaka OHTAKI, Ryoji FUNAHASHI Oxide Thermoelectrics in Thermoelectrics Handbook: macro to nano, Ed. D. M. Rowe, CRC Press, Inc., Boca Raton, 2006, chap. 35, 1-15

  • 熱電変換材料

    日本セラミックス協会・日本熱電学会編（ Role： Joint author）

    日刊工業新聞社  2005.10 

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    Responsible for pages：pp. 163-169   Language：Japanese   Book type：Scholarly book

  • Oxide Thermoelectrics

    Ed. K. Koumoto, I. Terasaki, N. Murayama（ Role： Joint author）

    Research Signpost  2002.12 

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    Responsible for pages：ISBN 81-7736-100-7, pp. 159-180.   Language：English   Book type：Scholarly book

    Oxide Thermoelectric Materials: An Overview with Some Historical and Strategic Perspectives Michitaka OHTAKI in Oxide Thermoelectrics, Ed. K. Koumoto, I. Terasaki, N. Murayama, Research Signpost, Trivandrum, India, 2002, ISBN 81-7736-100-7, pp. 159-180.

  • Novel Pt and Pd Based Core-Shell Catalysts with Critical New Issues of Heat Treatment, Stability and Durability for Proton Exchange Membrane Fuel Cells and Direct Methanol Fuel Cells, in Heat Treatment

    Nguyen Viet Long, Cao Minh Thi, Masayuki Nogami, Michitaka Ohtaki（ Role： Joint author）

    InTech  2012.9 

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    Responsible for pages：Chapter 3, pp. 41-74.   Language：English   Book type：Scholarly book

  • セラミックスの電磁気的・光学的性質

    日本セラミックス協会 編（ Role： Joint author）

    日本セラミックス協会  2006.8 

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    Responsible for pages：6.1節、pp. 111-118   Language：Japanese   Book type：Scholarly book

  • ユビキタスエネルギーの最新技術

    境哲男・小林哲彦 編（ Role： Joint author）

    シーエムシー出版  2006.5 

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    Responsible for pages：pp. 270-277   Language：Japanese   Book type：Scholarly book

  • ナノコンポジットマテリアル

    井上明久　編（ Role： Joint author）

    フロンティア出版  2005.11 

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    Responsible for pages：pp. 233-237   Language：Japanese   Book type：Scholarly book

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Presentations

  • 組成とナノ構造の制御による酸化物サーモエレクトロニクスの開拓 Invited

    大瀧倫卓

    日本セラミックス協会2021年年会  2021.3 

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    Event date： 2021.3

    Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • ナノコンポジット化による酸化物熱電変換材料の高性能化 Invited

    大瀧倫卓

    電気化学会九州支部2021年度春季特別講演会  2021.3 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

    Venue：オンライン   Country：Japan  

  • Enhanced Thermoelectric Performance of Porous SrTiO3 with Exsolved Ni Nanoparticles International conference

    2020.10 

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    Event date： 2020.10

    Presentation type：Oral presentation (general)  

    Venue：オンライン  

  • Niナノ粒子を溶離析出したNbドープSrTiO3焼結体の熱電性能

    大瀧倫卓、平田慎治、渡邊厚介

    第17回日本熱電学会学術講演会（TSJ2020）  2020.9 

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    Event date： 2020.9

    Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 硫化スピネルCu2Ti4S8の電子構造制御によるゼーベック係数の増大

    橋國克明、末國晃一郎、臼井秀知、Chetty Raju、太田道広、高畠敏郎、大瀧倫卓

    第17回日本熱電学会学術講演会（TSJ2020）  2020.9 

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    Event date： 2020.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 新規な高性能熱電硫化物Cu26Ti2Sb6−xGexS32

    萩原岳志、末國晃一郎、橋國克明、Chetty Raju、太田道広、大瀧倫卓

    第17回日本熱電学会学術講演会（TSJ2020）  2020.9 

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    Event date： 2020.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 室温熱電材料α-MgAgSbの溶融法による合成条件の検討

    藤啓太、末國晃一郎、橋國克明、穴澤卯進、西当弘隆、李哲虎、大瀧倫卓

    第17回日本熱電学会学術講演会（TSJ2020）  2020.9 

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    Event date： 2020.9

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 室温熱電材料α-MgAgSbのホットプレスによる焼結体作製条件の検討

    末國晃一郎、藤啓太、橋國克明、穴澤卯進、西当弘隆、李哲虎、大瀧倫卓

    第17回日本熱電学会学術講演会（TSJ2020）  2020.9 

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    Event date： 2020.9

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 最も複雑な結晶構造を持つ酸化物Mo2P4O15のフォノン熱伝導

    西崎寛基、大瀧倫卓、末國晃一郎

    第17回日本熱電学会学術講演会（TSJ2020）  2020.9 

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    Event date： 2020.9

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 酸化物熱電変換材料の挑戦と展望 Invited

    大瀧倫卓

    賢材研究会2019年度賢材シンポジウム  2020.3 

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    Event date： 2020.3

    Presentation type：Oral presentation (general)  

    Venue：デンカ(株)イノベーションセンター   Country：Japan  

  • 組成とナノ構造の制御による酸化物サーモエレクトロニクスの開拓〜バルク酸化物における熱・電子輸送の実験的探究と新規分野開拓〜 Invited

    大瀧倫卓

    日本セラミックス協会2020年年会  2020.3 

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    Event date： 2020.3

    Presentation type：Oral presentation (invited, special)  

    Venue：明治大学   Country：Japan  

  • Biomimetic Self-assembly Synthesis of Highly Regulated Single-nm Thick Layered Oxides and their Physicochemical Properties【招待講演】 Invited International conference

    The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)、2019年10月27〜31日、沖縄コンベンションセンター（沖縄県宜野湾市）  2019.10 

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    Event date： 2019.11 - 2019.10

    Presentation type：Oral presentation (general)  

    Venue：沖縄コンベンションセンター   Country：Japan  

    A highly regulated superlattice structure consisting of two-dimensional titanium oxide of ca. 1.5 nm in thickness with a d-spacing of 3 - 4 nm was synthesized in an aqueous solution by using bilayer micelles of sodium dodecylphosphate (SDP) surfactant as an organic molecule for a self-assembly template. A powder XRD study revealed that the product showed only (00l) diffractions in the low-2θ region, which are characteristic of a lamellar structure with a d001 spacing of ca. 4 nm. Moreover, hydrothermal (HT) post-treatment at 120 °C in distilled water markedly sharpened the (00l) diffractions, suggesting a substantial improvement in the spatial regularity of the layered structure. Precise temperature control of the solutions during the mixing and aging was revealed to be crucial to obtain highly regulated superlattice-like layered nanostructure. The optical absorption edge of the superlattice samples showed a large blue-shift of compared to that of bulk TiO2, suggesting an electron confinement effect in the titanium oxide layers.
    Au ions were intercalated by using a phase-transfer catalyst into the hydrophobic interior of the bilayer micelles interleaving the TiO2 layers, and were subsequently reduced to obtain Au nanoparticles. The samples thus prepared showed an absorption peak in the visible light region and exhibited higher photocatalytic activity compared with layered TiO2 without Au as well as commercial TiO2 (P-25). It demonstrated that the Au nanoparticles enhanced the visible light photocatalytic activity of the layered TiO2 with the superlattice structure.
    Fe-based oxide superlattice with presumably amorphous oxide framework was also biomimetically synthesized with the SDP micelles as the self-assembly template followed by the HT post-treatment (Fig. 1, Sample A). Whereas the low-angle (00l) diffractions disappeared after calcination at 350 °C (Sample B), the calcined samples immersed in an SDP aqueous solution successfully recovered the (00l) diffractions assigned to the superlattice structure (Sample C), indicating that the highly regulated layered structure once collapsed was reconstructed by the SDP molecules. These results also strongly suggest that the two-dimensionality of each oxide layer remained intact even after the calcination. It was also revealed that the bandgap energy of the samples alternatingly and reversibly switches between ca. 3.0 and 3.5 eV with the calcination/reconstruction cycles, implying that the disordering/reordering of the superlattice structure is responsible for the switching of the bandgap energy.

  • Thermoelectric Performance of Porous Nb- and Ni-doped SrTiO3 Containing Ni Nanoparticles Exsolved by Reducing Post-treatment International conference

    The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)、2019年10月27〜31日、沖縄コンベンションセンター（沖縄県宜野湾市）  2019.10 

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    Event date： 2019.11 - 2019.10

    Presentation type：Oral presentation (general)  

    Venue：沖縄コンベンションセンター   Country：Japan  

  • Thermoelectric Performance of Mo-doped bulk In2O3 International conference

    Wojciech Klich, Koichiro Suekuni, Michitaka Ohtaki

    2019.10 

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    Event date： 2019.11 - 2019.10

    Language：English  

    Country：Japan  

  • Anisotropic Thermoelectric Properties of W18O49 Prepared by SPS International conference

    The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)、2019年10月27〜31日、沖縄コンベンションセンター（沖縄県宜野湾市）  2019.10 

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    Event date： 2019.11 - 2019.10

    Language：English  

    Venue：沖縄コンベンションセンター   Country：Japan  

  • Synthesis and Thermoelectric Properties of β-pyrochlore Oxide CsW2-xRuxO6 International conference

    The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)、2019年10月27〜31日、沖縄コンベンションセンター（沖縄県宜野湾市）  2019.10 

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    Event date： 2019.11 - 2019.10

    Language：English  

    Venue：沖縄コンベンションセンター   Country：Japan  

  • High Thermoelectric Performance of Porous Nb- and Ni-doped SrTiO3 Containing Highly Dispersed Exsolved Ni Nanoparticles International conference

    2019.11 

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    Event date： 2019.11

    Presentation type：Oral presentation (general)  

    Venue：鳥取県民文化会館   Country：Japan  

  • High Thermoelectric Performance of Reduced Nb-doped SrTiO3 Containing Exsolved Ni nanoparticles International conference

    2019.9 

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    Event date： 2019.9

    Presentation type：Oral presentation (general)  

    Venue：Limassol   Country：Cyprus  

  • 硫化スピネルCu2FeTi3S8の結晶構造と熱電物性に対するCu欠損効果

    橋國克明、末國晃一郎、Chetty Raju、太田道広、高畠敏郎、大瀧倫卓

    第16回日本熱電学会学術講演会(TSJ2019)  2019.9 

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    Event date： 2019.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • コルーサイトCu26V2Si6S32の合成とキャリア濃度制御

    清水裕太、末國晃一郎、Chetty Raju、太田道広、高畠敏郎、大瀧倫卓

    第16回日本熱電学会学術講演会(TSJ2019)  2019.9 

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    Event date： 2019.9

    Language：Japanese  

    Venue：名古屋工業大学   Country：Japan  

  • エナーガイトCu3PS4におけるPのGe置換によるキャリア濃度制御

    谷本拓哉、谷下太基、末國晃一郎、臼井秀知、西当弘隆、李哲虎、黒木和彦、大瀧倫卓

    第16回日本熱電学会学術講演会(TSJ2019)  2019.9 

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    Event date： 2019.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • ファマチナイトCu3Sb1-x-yGexPyS4の高い熱電性能

    谷下太基、末國晃一郎、西当弘隆、李哲虎、大瀧倫卓

    第16回日本熱電学会学術講演会(TSJ2019)  2019.9 

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    Event date： 2019.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • Ultra-low Lattice Thermal Conductivity of ZnO-based Thermoelectric Oxides International conference

    Michitaka Ohtaki, Hideaki Fujiwara, Kosuke Watanabe, Koichiro Suekuni

    2019.8 

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    Event date： 2019.8

    Presentation type：Oral presentation (general)  

    Country：Mexico  

  • Thermoelectric properties of Ru-doped β-pyrochlore CsW2O6 International conference

    2019.6 

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    Event date： 2019.6 - 2019.7

    Language：English  

    Venue：Gyeongju Hwabaek International Convention Center   Country：Korea, Republic of  

  • Rhombohedral CuTi2S4: a thiospinel-derived thermoelectric material International conference

    Katsuaki Hashikuni, Koichiro Suekuni, Hidetomo Usui, Raju Chetty, Michihiro Ohta, Kazuhiko Kuroki, Toshiro Takabatake, Kosuke Watanabe, Michitaka Ohtaki

    The 38th International Conference on Thermoelectrics & the 4th Asian Conference on Thermoelectrics (ICT/ACT2019)  2019.6 

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    Event date： 2019.6 - 2019.7

    Language：English  

    Country：Korea, Republic of  

  • Quasi-one-dimensional Electronic Structure and Low Thermal Conductivity in Sn1.2Ti0.8S3 International conference

    Koichiro Suekuni, Hidetomo Usui, Siying Qiao, Katsuaki Hashikuni, Tatsuya Hirano, Hirotaka Nishiate, Chul-Ho Lee, Kazuhiko Kuroki, Kosuke Watanabe, Michitaka Ohtaki

    The 38th International Conference on Thermoelectrics & the 4th Asian Conference on Thermoelectrics (ICT/ACT2019)  2019.6 

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    Event date： 2019.6 - 2019.7

    Language：English  

    Country：Korea, Republic of  

  • Thermoelectric Properties of P- and Si-substituted Tetrahedrites International conference

    Takuya Tanimoto, Koichiro Suekuni, Hirotaka Nishiate, Chul-Ho Lee, Michitaka Ohtaki

    The 38th International Conference on Thermoelectrics & the 4th Asian Conference on Thermoelectrics (ICT/ACT2019)  2019.6 

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    Event date： 2019.6 - 2019.7

    Language：English  

    Country：Korea, Republic of  

  • Nano-structured ReO3-type Building Blocks for Reduced Lattice Thermal Conductivity in High Temperature WO2.70 Penta-columnar Phase International conference

    2019.6 

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    Event date： 2019.6 - 2019.7

    Language：English  

    Venue：Gyeongju Hwabaek International Convention Center   Country：Korea, Republic of  

  • Anomalous Reduction of Lattice Thermal Conductivity in ZnO-based Thermoelectric Oxides with Extended Solid Solubility Limit on Binary Doping【招待講演】 Invited International conference

    E-MRS 2019 Spring Meeting/IUMRS-ICAM2019、2019年5月27〜31日、Congress & Exhibition Centre Acropolis, Nice（France）  2019.5 

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    Event date： 2019.5

    Presentation type：Oral presentation (general)  

    Venue：Congress & Exhibition Centre Acropolis, Nice   Country：France  

    Zinc oxide has been one of the most promising n-type thermoelectric oxides with relatively large power factor values competitive to major non-oxide candidates such as skutterudites and clathrate compounds. However, a substantially high lattice thermal conductivity of ZnO has limited its ZT values below 0.7, despite a number of attempts to suppress the thermal conduction in the oxide.
    Here we report an anomalously large reduction of the lattice thermal conductivity, ph, of ZnO doped with Al and Cu simultaneously. The ZnO samples doped with equimolar amounts (x at. % to Zn) of Al and Cu showed a significant peak shift in their XRD patterns, which has never been observed on single doping of Al or Cu. Moreover, the ph values of the samples at x = 8 was as low as 5 and 1.5 W/Km at room temperature and 800 °C, respectively. By comparing with those of Al-doped ZnO at x = 2, which are 40 and 8 W/Km at the corresponding temperatures, a 80% reduction of ph is overwhelming. A remarkable increase in the occupancy of Al in the 4-fold coordination was clearly confirmed by 27Al MAS solid state NMR, evidencing an extended solubility limit of Al into the Zn site in the presence of Cu as a co-dopant. It should also be noted that the ph value at 800 °C, 1.5 W/Km, is very close to the theoretical lower limit of 1.2 W/Km predicted for ZnO above room temperature.

  • 酸化物熱電変換材料の開発戦略と最新状況 Invited

    大瀧倫卓

    日本セラミックス協会九州支部春季特別講演会、2019年4月15日、北九州国際会議場（福岡県北九州市）  2019.4 

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    Event date： 2019.4

    Presentation type：Oral presentation (invited, special)  

    Venue：北九州国際会議場   Country：Japan  

  • Drastically Suppressed Lattice Thermal Conductivity of ZnO-based Thermoelectric Oxides with Extended Solubility Limit on Binary Doping Invited International conference

    Michitaka Ohtaki

    2019.1 

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    Event date： 2019.1

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：United States  

  • Extremely Low Thermal Conductivity of ZnO Thermoelectric Oxide Doped with Al and Cu Invited International conference

    Michitaka Ohtaki

    The 5th Southeast Asia Conference on Thermoelectrics (SACT 2018)  2018.12 

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    Event date： 2018.12

    Presentation type：Oral presentation (general)  

    Country：Cambodia  

  • 酸化物熱電半導体による未利用熱エネルギーの電力再生 Invited

    大瀧倫卓

    薄膜材料デバイス研究会第15回研究集会、2018年11月14〜15日、龍谷大学響都ホール校友会館（京都府京都市）  2018.11 

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    Event date： 2018.11

    Presentation type：Oral presentation (general)  

    Venue：龍谷大学響都ホール校友会館   Country：Japan  

  • 酸化物による熱電元素戦略は可能か 〜酸化物熱電の難しさと期待〜

    大瀧倫卓

    第15回日本熱電学会学術講演会(TSJ2018)  2018.9 

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    Event date： 2018.9

    Presentation type：Oral presentation (general)  

    Venue：東北大学青葉山キャンパス   Country：Japan  

  • 熱電硫化銅鉱物コルーサイトの低熱伝導率を実現する結晶構造

    清水裕太、末國晃一郎、斎藤光、吉本大地、西堀英治、笠井秀隆、Bouyrie Yohan、Chetty Raju、太田道広、橋國克明、高畠敏郎、大瀧倫卓

    第15回日本熱電学会学術講演会(TSJ2018)  2018.9 

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    Event date： 2018.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東北大学青葉山キャンパス   Country：Japan  

  • 擬一次元構造をとるSn1.2Ti0.8S3とSn1.0Zr1.0S3の熱電物性に対するNb置換効果

    喬思瑩、末國晃一郎、西当弘隆、李哲虎、大瀧倫卓

    第15回日本熱電学会学術講演会(TSJ2018)  2018.9 

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    Event date： 2018.9

    Language：Japanese  

    Venue：東北大学青葉山キャンパス   Country：Japan  

  • アージャイロダイト型化合物Cu8SiS6の結晶構造と熱電物性に対する元素置換効果

    平野達也、末國晃一郎、西当弘隆、李哲虎、大瀧倫卓

    第15回日本熱電学会学術講演会(TSJ2018)  2018.9 

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    Event date： 2018.9

    Language：Japanese  

    Venue：東北大学青葉山キャンパス   Country：Japan  

  • テトラヘドライトCu12Sb4S13の熱電物性に対するSiおよびP置換効果

    谷本拓哉、末國晃一郎、西当弘隆、李哲虎、大瀧倫卓

    第15回日本熱電学会学術講演会(TSJ2018)  2018.9 

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    Event date： 2018.9

    Language：Japanese  

    Venue：東北大学青葉山キャンパス   Country：Japan  

  • 硫化スピネルCu2Ti4S8の結晶構造と電子構造および熱電物性に対するCu欠損効果

    橋國克明、末國晃一郎、臼井秀知、Chetty Raju、太田道広、黒木和彦、高畠敏郎

    第15回日本熱電学会学術講演会(TSJ2018)  2018.9 

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    Event date： 2018.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東北大学青葉山キャンパス   Country：Japan  

  • ボトムアップ合成によるSrTiO3/TiNナノ複合構造体の形成とその熱・電気輸送挙動

    渡邊厚介、松崎彰剛、末國晃一郎、大瀧倫卓

    日本セラミックス協会第31回秋季シンポジウム  2018.9 

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    Event date： 2018.9

    Language：Japanese  

    Venue：名古屋工業大学   Country：Japan  

  • 金属ナノ粒子と細孔を共存させた酸化物系ナノコンポジット熱電材料の合成

    平田慎治、大瀧倫卓、渡邊厚介、末國晃一郎

    日本セラミックス協会第31回秋季シンポジウム  2018.9 

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    Event date： 2018.9

    Language：Japanese  

    Venue：名古屋工業大学   Country：Japan  

  • Anomalously Low Thermal Conductivity of ZnO Along with Extended Solubility Limit of Al+Cu Binary Doping International conference

    Michitaka Ohtaki, Hideaki Fujiwara, Kosuke Watanabe, Koichiro Suekuni

    Materials Challenges in Alternative and Renewable Energy 2018 (MCARE2018)  2018.8 

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    Event date： 2018.8

    Presentation type：Oral presentation (general)  

    Country：Canada  

  • Synthesis and Thermoelectric Properties of Oxide Nanocomposites Containing Metal Nanoparticles Formed by Exsolution Reaction International conference

    Shinji Hirata, Michitaka Ohtaki, Kosuke Watanabe, Koichiro Suekuni

    The 37th International and 16th European Conference on Thermoelectrics (ICT/ECT2018)  2018.7 

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    Event date： 2018.7

    Presentation type：Oral presentation (general)  

    Country：France  

  • Extended Solubility Limit of ZnO on Binary Doping Leading to Anomalously Low Thermal Conductivity International conference

    Michitaka Ohtaki, Hideaki Fujiwara, Kosuke Watanabe, Koichiro Suekuni

    The 37th International and 16th European Conference on Thermoelectrics (ICT/ECT2018)  2018.7 

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    Event date： 2018.7

    Presentation type：Oral presentation (general)  

    Country：France  

  • Effects of Se Substitution on the Thermoelectric Properties of (SnS)1.2(TiS2)n (n = 1, 2) International conference

    2018.7 

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    Event date： 2018.7

    Language：English  

    Venue：Caen   Country：France  

  • Nanostructure Engineering in Oxide Thermoelectric Materials Invited International conference

    Michitaka Ohtaki

    3rd Global Congress & Expo on Materials Science & Engineering  2018.6 

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    Event date： 2018.6

    Language：English   Presentation type：Oral presentation (general)  

    Country：Italy  

  • Development of Oxide Ceramics for Thermoelectric Power Generation Applications Invited International conference

    Michitaka Ohtaki

    42nd International Conference and Expo on Advanced Ceramics and Composites (ICACC2018)  2018.1 

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    Event date： 2018.1

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • Nanostructure Engineering in Oxide Thermoelectric Materials for Higher Energy Efficiency Invited International conference

    Michitaka Ohtaki

    The 13th International Conference on Ecomaterials (ICEM13)  2017.11 

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    Event date： 2017.11

    Language：English   Presentation type：Oral presentation (general)  

    Country：Thailand  

  • Self-assembly Synthesis and Physicochemical Properties of Highly Regulated Layered Oxides by Two-dimensionally Confined Growth in Single-nanometer Thickness Invited International conference

    Michitaka Ohtaki

    The 6th International Workshop on Nanotechnology and Application (IWNA 2017)  2017.11 

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    Event date： 2017.11

    Language：English   Presentation type：Oral presentation (general)  

    Country：Viet Nam  

  • Ultra-low Thermal Conductivity in Oxides with Rattler-in-a-Cage Crystal Structure Promising for High-temperature Thermoelectric Conversion Invited International conference

    Michitaka Ohtaki

    TThe 6th International Symposium on Advanced Ceramics and Technology for Sustainable Energy Applications toward a Low Carbon Society (ACTSEA 2017)  2017.11 

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    Event date： 2017.10 - 2017.11

    Language：English   Presentation type：Oral presentation (general)  

    Country：Taiwan, Province of China  

  • SrTiO3/TiNコアシェル構造ナノ粒子の合成と熱電ナノコンポジット化

    #松崎彰剛、渡邊厚介、末國晃一郎、大瀧倫卓

    日本セラミックス協会第30回秋季シンポジウム  2017.9 

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    Event date： 2017.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：神戸大学鶴甲第一キャンパス   Country：Japan  

  • Auナノ粒子を導入したAl:ZnOナノコンポジットの構造と熱電特性

    #峯一貴、渡邊厚介、末國晃一郎、大瀧倫卓

    第14回日本熱電学会学術講演会（TSJ2017）  2017.9 

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    Event date： 2017.9

    Language：Japanese  

    Venue：大阪大学豊中キャンパス   Country：Japan  

  • Rattling Phenomena in Oxides for Enhanced Phonon Scattering Invited International conference

    Michitaka Ohtaki

    Workshop on Advanced Materials and Principles to Develop Viable Thermoelectrics and Advanced Thermal Management  2017.9 

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    Event date： 2017.9

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Nanostructure Engineering for High-performance Oxide Thermoelectric Materials Invited International conference

    Michitaka Ohtaki

    3rd World Congress on Materials Science & Engineering (Materials Science & Engineering)  2017.8 

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    Event date： 2017.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Spain  

  • Ultra-low Thermal Conductivity in β-Pyrochlore-type Oxides International conference

    2017.8 

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    Event date： 2017.7 - 2017.8

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Pasadena   Country：United States  

  • Carrier Density Tuning in Cu2CoTi3S8 by Oxidative Extraction of Cu International conference

    @Katsuaki Hashikuni, Koichiro Suekuni, Kosuke Watanabe, @Bouyrie Yohan, @Michihiro Ohta, Michitaka Ohtaki, and @Toshiro Takabatake

    36th International Conference on Thermoelectrics (ICT2017)  2017.8 

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    Event date： 2017.7 - 2017.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • Nanostructure Engineering in Oxide Ceramics for High Temperature Thermoelectric Energy Conversion Invited International conference

    Michitaka Ohtaki

    15th Conference & Exhibition of the European Ceramic Society (ECerS2017)  2017.7 

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    Event date： 2017.7

    Language：English   Presentation type：Oral presentation (general)  

    Country：Hungary  

  • エネルギー効率向上技術としての酸化物セラミックス熱電変換材料 Invited

    大瀧倫卓

    日本セラミックス協会第51回基礎科学部会セミナー  2017.7 

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    Event date： 2017.7

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Ultra-low Thermal Conductivity in β-Pyrochlore Oxides with a Rattler-in-a-Cage Crystal Structure International conference

    2017.5 

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    Event date： 2017.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Waikoloa, Hawaii   Country：United States  

  • Thermoelectric Power Generation ― from fundamentals to applications with a demo of how to generate electricity Invited International conference

    2017.5 

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    Event date： 2017.5

    Language：English   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Venue：Ho Chi Minh City   Country：Viet Nam  

  • Crystal and Nanostructure Engineering in Oxide Thermoelectric Materials for Waste Heat Recovery Invited International conference

    Michitaka Ohtaki

    The Third International Workshop on Nano Materials for Energy Conversion (NMEC-3)  2017.5 

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    Event date： 2017.5

    Language：English   Presentation type：Oral presentation (general)  

    Country：Viet Nam  

  • 極細Auナノワイヤの生成反応における条件依存性

    #石橋史啓、大瀧倫卓

    日本化学会第97春季年会（2017）  2017.3 

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    Event date： 2017.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：慶應義塾大学日吉キャンパス   Country：Japan  

  • Nanostructure and Phonon Engineering in Oxide Thermoelectric Materials Invited International conference

    Michitaka Ohtaki

    TMS 2017 146th Annual Meeting and Exhibition  2017.2 

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    Event date： 2017.2 - 2017.3

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • Thermal Conductivity Reduction in Oxides for Thermoelectric Energy Conversion Invited International conference

    Michitaka Ohtaki

    The 33rd International Korea-Japan Seminar on Ceramics (K-J Ceramics 33)  2016.11 

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    Event date： 2016.11

    Language：English   Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • Oxide Thermoelectric Materials for Waste Heat Energy Recuperation Invited International conference

    Michitaka Ohtaki

    Global Congress & Expo on Materials Science & Nanoscience (Materials Science-2016)  2016.10 

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    Event date： 2016.10

    Language：English   Presentation type：Oral presentation (invited, special)  

    Country：United Arab Emirates  

  • ZnO焼結体への金属ナノ粒子分散プロセスと熱電特性

    渡邊厚介、#小川敏史、大瀧倫卓

    日本セラミックス協会第29回秋季シンポジウム  2016.9 

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    Event date： 2016.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：広島大学   Country：Japan  

  • 酸化物セラミックスの相転移現象に伴う熱伝導率変化

    #渡部啓、大瀧倫卓、@戸村信雄、@北岡賢治、@篠崎泰夫

    日本セラミックス協会第29回秋季シンポジウム  2016.9 

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    Event date： 2016.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：広島大学   Country：Japan  

  • Ag/ZnOナノコンポジットの形成と熱電特性

    渡邊厚介、#峯一貴、大瀧倫卓

    第13回日本熱電学会学術講演会（TSJ2016）  2016.9 

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    Event date： 2016.9

    Language：Japanese  

    Venue：東京理科大学葛飾キャンパス（東京都葛飾区）   Country：Japan  

  • 金属ナノ粒子／多孔質複合体の電子・フォノン伝導特性

    #平田慎治、大瀧倫卓

    第13回日本熱電学会学術講演会（TSJ2016）  2016.9 

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    Event date： 2016.9

    Language：Japanese  

    Venue：東京理科大学葛飾キャンパス（東京都葛飾区）   Country：Japan  

  • ZnO-based Oxide Thermoelectric Materials with Microstructure Control for Selective Phonon Scattering Invited International conference

    Michitaka Ohtaki

    Materials Challenges in Alternative & Renewable Energy Conference (MCARE) 2016  2016.4 

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    Event date： 2016.4

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • Enhanced Phonon Scattering in Cage-Like Structure Oxides with Rattling Atoms International conference

    Michitaka Ohtaki and #Kohei Mizuta

    2016 MRS Spring Meeting and Exhibit  2016.3 

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    Event date： 2016.3 - 2016.4

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • 分子集合体鋳型法によるナノ2D 酸化鉄の合成とその特性

    #早野慎一、大瀧倫卓

    日本セラミックス協会2016年年会  2016.3 

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    Event date： 2016.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：早稲田大学西早稲田キャンパス   Country：Japan  

  • 液相前駆体法によるAg/ZnO 焼結体の微細構造と熱電特性

    渡邊厚介、大瀧倫卓

    日本セラミックス協会2016年年会  2016.3 

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    Event date： 2016.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：早稲田大学西早稲田キャンパス   Country：Japan  

  • 三価金属元素を含むβ-パイロクロア型酸化物の熱電特性

    #水田航平、大瀧倫卓

    日本セラミックス協会2016年年会  2016.3 

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    Event date： 2016.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：早稲田大学西早稲田キャンパス   Country：Japan  

  • Oxide Materials with Ultra-low Lattice Thermal Conductivity Invited International conference

    Michitaka Ohtaki

    The EMN Meeting on Thermoelectric Materials  2016.2 

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    Event date： 2016.2

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • Thermoelectric Performance of Multinary-doped ZnO with Enhanced Phonon Scattering International conference

    Michitaka Ohtaki, #Yuki Iwano, and #Taiga Kuragaki

    The 3rd International Renewable and Sustainable Energy Conference (IRSEC'15)  2015.12 

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    Event date： 2015.12

    Language：English   Presentation type：Oral presentation (general)  

    Country：Morocco  

  • Thermoelectric Properties of Ag/ZnO Sintered Bodies Prepared from Soft-chemical Precursors International conference

    Kosuke Watanabe and Michitaka Ohtaki

    2015 MRS Fall Meeting & Exhibit  2015.12 

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    Event date： 2015.11 - 2015.12

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • The Crystal Structures and Thermoelectric Properties of Defect Pyrochlore Oxides with Anharmonic Vibration International conference

    #Kohei Mizuta and Michitaka Ohtaki

    2015 MRS Fall Meeting & Exhibit  2015.12 

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    Event date： 2015.11 - 2015.12

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • Recent Progress in Oxide Thermoelectric Materials with Microstructure Control for Selective Phonon Scattering Invited International conference

    Michitaka Ohtaki

    14th International Union of Materials Research Societies- International Conference on Advanced Materials (IUMRS-ICAM2015)  2015.10 

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    Event date： 2015.10 - 2015.6

    Language：English   Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • 分子集合体鋳型法によるナノ層状酸化鉄の合成とそのソフト化学的挙動

    #早野慎一、大瀧倫卓

    日本セラミックス協会第28回秋季シンポジウム  2015.9 

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    Event date： 2015.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：富山大学   Country：Japan  

  • ZnO系酸化物熱電材料の微細構造と高温挙動

    大瀧倫卓、#倉垣大河

    日本セラミックス協会第28回秋季シンポジウム  2015.9 

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    Event date： 2015.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：富山大学   Country：Japan  

  • Fe-W-O系β-パイロクロア型酸化物の熱電特性

    #水田航平、大瀧倫卓

    第12回日本熱電学会学術講演会（TSJ2015）  2015.9 

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    Event date： 2015.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：九州大学筑紫キャンパス（福岡県春日市）   Country：Japan  

  • 金属微粒子の選択溶出によるナノ多孔質酸化物の合成と熱物性

    #平田慎治、大瀧倫卓

    第12回日本熱電学会学術講演会（TSJ2015）  2015.9 

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    Event date： 2015.9

    Language：Japanese  

    Venue：九州大学筑紫キャンパス（福岡県春日市）   Country：Japan  

  • 液相前駆体法によるAg/ZnO焼結体の合成と熱電特性

    渡邊厚介、大瀧倫卓

    第12回日本熱電学会学術講演会（TSJ2015）  2015.9 

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    Event date： 2015.9

    Language：Japanese  

    Venue：九州大学筑紫キャンパス（福岡県春日市）   Country：Japan  

  • Selective Phonon Scattering in ZnO-based Bulk Thermoelectric Oxides International conference

    Michitaka Ohtaki, #Taiga Kuragaki, #Yuki Iwano, #Kiyoshi Yamamoto

    Advanced Materials World Congress 2015 (AMWC2015)  2015.8 

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    Event date： 2015.8

    Language：English  

    Country：Sweden  

  • Microstructure and Thermoelectric Properties of &#8232;Ga/Cu-doped ZnO International conference

    Michitaka Ohtaki and #Taiga Kuragaki

    34th International Conference on Thermoelectrics/13th European Conference on Thermoelectrics (ICT/ECT2015)  2015.6 

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    Event date： 2015.6 - 2015.7

    Language：English   Presentation type：Oral presentation (general)  

    Country：Germany  

  • Crystal structure and thermoelectric properties of β-pyrochlore-type alkali iron tungsten oxides with cage-like structure International conference

    2015.6 

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    Event date： 2015.6 - 2015.7

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Dresden   Country：Germany  

  • ZnO-based Oxide Thermoelectric Materials: problems solved and unsolved yet International conference

    Michitaka Ohtaki

    The 11th International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE-11)  2015.6 

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    Event date： 2015.6 - 2018.6

    Language：English  

    Country：Canada  

  • Enhanced Phonon Scattering in Nanostructured Oxide Materials Invited International conference

    Michitaka Ohtaki

    XVI International Forum on Thermoelectricity  2015.5 

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    Event date： 2015.5

    Language：English   Presentation type：Oral presentation (general)  

    Country：France  

  • Recent Aspects of Oxide Ceramic Materials for Thermoelectric Energy Conversion Invited International conference

    Michitaka Ohtaki

    BIT's 1st Annual World Congress of Smart Materials-2015 (WCSM-2015)  2015.3 

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    Event date： 2015.3

    Language：English   Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • 酸化物熱電変換材料を用いた未利用熱回収用発電モジュール

    大瀧 倫卓

    日本鉄鋼協会第169回春季講演大会  2015.3 

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    Event date： 2015.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京大学駒場キャンパス   Country：Japan  

  • New Aspects of Oxide Ceramic Materials for Thermoelectric Energy Conversion Invited International conference

    Michitaka Ohtaki

    Energy, Materials, and Nanotechnology (EMN) Meeting on Ceramics  2015.1 

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    Event date： 2015.1

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • New Aspects in Oxide Thermoelectric Materials for Heat-to-Electricity Direct Energy Conversion Invited International conference

    Michitaka Ohtaki, Kohei Mizuta, Yuki Iwano

    The 13th Eurasia Conference on Chemical Sciences (EuAsC2S-13)  2014.12 

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    Event date： 2014.12

    Language：English   Presentation type：Oral presentation (general)  

    Country：India  

  • Enhanced Phonon Scattering and Carrier Compensation in Multinary-doped ZnO Thermoelectric Oxide International conference

    Michitaka Ohtaki, Yuki Iwano

    2014 MRS Fall Meeting  2014.12 

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    Event date： 2014.11 - 2014.12

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • Self-assembly Synthesis of 2-D Semiconducting Oxide Nano-superlattice with Enhanced Photocatalytic Activity by Incorporation of Au Nanoparticles Invited International conference

    Michitaka Ohtaki

    The Second International Workshop on Nano Materials for Energy Conversion (NMEC-2)  2014.11 

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    Event date： 2014.11

    Language：English   Presentation type：Oral presentation (general)  

    Country：Viet Nam  

  • Oxide Thermoelectric Materials for Power Generation From Mid-to-High Temperature Unused Heat Energy Invited International conference

    Michitaka Ohtaki

    2014.11 

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    Event date： 2014.11

    Language：English   Presentation type：Oral presentation (invited, special)  

    Country：Korea, Republic of  

  • High-temperature Durability of doped ZnO on Thermal Cycling under Aerobic Conditions International conference

    Michitaka Ohtaki, Taiga Kuragaki, Taketoshi Tomida

    IUMRS International Conference in Asia (IUMRS-ICA) 2014  2014.8 

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    Event date： 2014.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Enhanced Phonon Scattering in Oxides with “Rattling” Atoms in Oversized Cage Structure International conference

    2014.7 

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    Event date： 2014.7

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Nashville, TN   Country：United States  

    Oxide thermoelectric materials, which are highly durable at high temperature in air, non-toxic, low cost with minimal environmental impact, are apparently promising for recuperation of decentralized waste heat energy at the temperature range of > 400 °C, where all the non-oxide candidate materials will eventually be oxidized under aerobic conditions. Although strongly ionic characters of oxide materials has been regarded as an inherent disadvantage leading to low carrier mobility and high lattice thermal conductivity, it has been revealed that such disadvantages are not always the case with all oxides. Recent reports on reduced ferroelectric oxides [1] and cage-like structure oxides [2] are convincing that the simple picture of ionic compounds no longer holds for these oxides.
    In this paper, some new aspects in metal oxides that show unconventionally enhanced phonon scattering will be highlighted in terms of their transport properties and crystal structures. In particular, β-pyrochlore oxides ABB’O6 (A = K, Rb, Cs) show lower lattice thermal conductivity with decreasing the mass and size of the A-site alkali cations, clearly evidencing that the larger size mismatch between the A-site cations and the surrounding oversized cage framework enhances the “rattling” motion of the A-site cations and thereby efficiently shortens the phonon mean free path more for the smaller A-site cations. As a consequence, the thermal conductivity of the oxide with the smallest A cation, KBB’O6, was revealed to be virtually the same with its theoretical minimum, κmin [3].

  • Enhanced Phonon Scattering in “Rattling” Oxides for Thermoelectric Energy Conversion International conference

    2014.6 

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    Event date： 2014.6

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Montecatini Terme   Country：Italy  

    Increasing energy demands in worldwide definitely require safer energy security options. Thermoelectric (TE) conversion is becoming more and more of vital importance for higher overall energy efficiency.
    In terms of durability at high temperature in air, metal oxides are most attractive. Since the early 1990s, several oxide materials such as CaMnO3, ZnO, SrTiO3, NaCoO2, and Ca3Co4O9 have been reported to show a promising thermoelectric performance. However, strongly ionic characters and the light constituent element, oxygen, of metal oxides are apparently against the conventional guiding principles for higher ZT.
    In this paper, we report the thermal and electrical properties of defect pyrochlore (β-pyrochlore) oxides AB2O6 with the “rattler-in-a-cage” structure, in which small A cations sit in an oversized cage-like crystal structure. Extremely shortened phonon mean free path with smaller A cations of in the oxides will be reported. Moreover, improvement in the electrical conduction in the B2O6 framework of the oxides will be discussed.

  • 中高温域の廃熱回収を目的とした熱電発電モジュール

    大瀧 倫卓

    日本鉄鋼協会第167回春季講演大会  2014.3 

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    Event date： 2014.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京工業大学   Country：Japan  

  • Recent Aspects of R&D for Next Generation Thermoelectric Materials International conference

    Michitaka Ohtaki

    The 1st Symposium of Research and Education Center for Advanced Energy Materials, Devices, and Systems  2013.3 

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    Event date： 2014.3

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • New Aspects in Oxide Thermoelectric Materials with Unconventionally Enhanced Phonon Scattering International conference

    Michitaka Ohtaki, So Miyaishi, Kohei Mizuta

    11th European Conference on Thermoelectrics (ECT 2013)  2013.11 

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    Event date： 2013.11

    Language：English   Presentation type：Oral presentation (general)  

    Country：Netherlands  

  • Oxide Thermoelectric Materials Promising for Power Generation from Mid-to-High Temperature Waste Heat International conference

    Michitaka Ohtaki, Yuki Iwano

    The 2nd International Symposium on Inorganic and Environmental Materials (ISIEM 2013)  2013.10 

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    Event date： 2013.10

    Language：English   Presentation type：Oral presentation (general)  

    Country：France  

  • β-パイロクロア型酸化物AAl0.33Te1.67O6 (A=K, Rb, Cs)の熱電特性

    水田 航平, 大瀧 倫卓

    日本熱電学会第十回学術講演会（TSJ2013）  2013.9 

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    Event date： 2013.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋大学   Country：Japan  

  • Oxide Materials with Unconventional Transport Properties Promising for Thermoelectrics Invited International conference

    Michitaka Ohtaki

    2013.8 

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    Event date： 2013.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Singapore  

  • Nanostructured Oxide Ceramics for Efficient Thermoelectric Energy Conversion Invited International conference

    Michitaka Ohtaki

    12th International Conference on Ceramic Processing Science (12-ICCPS)  2013.8 

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    Event date： 2013.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • ZnO系酸化物の熱電物性の温度・雰囲気依存性に関する研究

    倉垣 大河, 大瀧 倫卓

    第50回化学関連支部合同九州大会  2013.7 

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    Event date： 2013.7

    Language：Japanese  

    Venue：北九州国際会議場   Country：Japan  

  • High-temperature Stability of ZnO-based Thermoelectric Materials with Thermal Cycling under Aerobic Conditions International conference

    The 32nd International Conference on Thermoelectrics (ICT2013)  2013.7 

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    Event date： 2013.6 - 2013.7

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Thermoelectric Properties of Al-doped ZnO Synthesized from Different Precursor Morphologies International conference

    The 32nd International Conference on Thermoelectrics (ICT2013)  2013.7 

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    Event date： 2013.6 - 2013.7

    Language：Japanese  

    Country：Japan  

  • Oxide Materials in Thermoelectrics: Beyond a Simple Picture of Ionic Compounds Invited International conference

    The 10th Pacific Rim Conference on Ceramic and Glass Technology (PacRim10)  2013.6 

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    Event date： 2013.6

    Language：English   Presentation type：Oral presentation (general)  

    Country：United States  

  • 鉄系層状酸化物CuFeO2におけるアニオン置換とその熱電物性

    吉田 諭史, 大瀧 倫卓

    第51回セラミック基礎科学討論会  2013.1 

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    Event date： 2013.1

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：仙台国際センター   Country：Japan  

  • Oxide Materials for Mid-to-High Temperature &#8232;Thermoelectric Energy Conversion Invited International conference

    Michitaka Ohtaki

    The 29th International Korea-Japan Seminar on Ceramics  2012.11 

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    Event date： 2012.11

    Language：English   Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • Oxide Thermoelectric Materials Promising for Heat-to-Electricity Direct Conversion from Mid-to-High Temperature Waste Heat International conference

    Michitaka Ohtaki

    2nd International Conference on Competitive Materials and Technology Processes (ic-cmtp2)  2012.10 

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    Event date： 2012.10

    Language：English   Presentation type：Oral presentation (general)  

    Country：Hungary  

  • Optimizing the Thermoelectric Properties of Oxide Materials: some case studies and strategies International conference

    Michitaka Ohtaki, Yuki Iwano, So Miyaishi

    IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012)  2012.9 

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    Event date： 2012.9

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • 分子集合体を鋳型としたナノ層状酸化チタンのAuナノ粒子複合化と光触媒特性

    北崎 将士, 大瀧 倫卓

    &#8232;日本セラミックス協会第25回秋季シンポジウム  2012.9 

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    Event date： 2012.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋大学   Country：Japan  

  • Oxide Thermoelectric Materials with Bulk Nanocomposite Structures for Heat-to-Electricity Direct Conversion &#8232;and Applicability of Self-assembly Low-dimensional Oxide Nanomaterials Invited International conference

    Michitaka Ohtaki

    First International Workshop on Nano Materials for Energy Conversion and Fuel Cell (NMEC-1)  2012.8 

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    Event date： 2012.8

    Language：English  

    Country：Viet Nam  

  • Extremely Low Thermal Conductivity in Oxides with Cage-like Crystal Structure&#8232; International conference

    Michitaka Ohtaki, So Miyaishi

    The 31st International Conference on Thermoelectrics 2012 (ICT-2012)  2012.7 

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    Event date： 2012.7

    Language：English  

    Country：Denmark  

  • Thermoelectric Properties and Impurity-related Heterogeneous Microstructure of Doped ZnO International conference

    Michitaka Ohtaki, Yuki Iwano

    &#8232;2012 Spring Meeting of E-MRS  2012.5 

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    Event date： 2012.5

    Language：English  

    Country：France  

  • Zinc Oxide as a Promising Material for Thermoelectric Power Generation Utilizing Wasted Heat Energy Invited International conference

    Michitaka Ohtaki

    The 12th International Confernce on Chemical Sciences (EuAsC2S-12)  2012.4 

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    Event date： 2012.4

    Language：English   Presentation type：Oral presentation (general)  

    Country：Greece  

  • Oxide materials for high-temperature thermoelectrics Invited International conference

    Michitaka Ohtaki

    Deutsche Physikalische Gesellschaft 2011 Spring Meeting  2012.3 

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    Event date： 2012.3

    Presentation type：Oral presentation (general)  

    Country：Germany  

  • かご状結晶構造を持つβ-パイロクロア型酸化物の特異的に低い熱伝導率

    大瀧倫卓, 宮石壮

    日本セラミックス協会2012年年会  2012.3 

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    Event date： 2012.3

    Presentation type：Oral presentation (general)  

    Venue：京都市   Country：Japan  

  • 秩序的なメソポーラス構造を持つ焼結体の作製と熱伝導

    古庄真也, 大瀧倫卓

    日本セラミックス協会2012年年会  2012.3 

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    Event date： 2012.3

    Presentation type：Oral presentation (general)  

    Venue：京都市   Country：Japan  

  • Thermal Conductivity Reduction and Thermoelectric Performance of ZnO with Multinary Doping International conference

    Michitaka Ohtaki, Yuki Iwano

    The 36th International Conference & Exposition on Advanced Ceramics & Composites (ICACC 2012)  2012.1 

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    Event date： 2012.1

    Presentation type：Oral presentation (general)  

    Country：United States  

  • Self-assembly Synthesis of 2-dimensional Metal Oxide Superlattices and Their Optical and Electromagnetic Properties International conference

    Michitaka Ohtaki

    2nd Nano Today Conference  2011.12 

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    Event date： 2011.12

    Country：United States  

  • Controlling Microstructure of Metal Oxides for Efficient Thermoelectric Materials for Energy Harvesting International conference

    Michitaka Ohtaki, Goro Yamamoto, Yuki Iwano

    9th European Conference on Thermoelectrics  2011.9 

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    Event date： 2011.9

    Presentation type：Oral presentation (general)  

    Country：Greece  

  • Promising n-type Thermoelectric Performance of ZnO-based Oxides for Energy Harvesting International conference

    Michitaka Ohtaki, Yuki Iwano

    E-MRS 2011 Fall Meeting  2011.9 

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    Event date： 2011.9

    Presentation type：Oral presentation (general)  

    Country：Poland  

  • 多元ドープしたZnO系酸化物の熱電特性

    岩野勇輝, 大瀧倫卓,

    日本セラミックス協会第24回秋季シンポジウム  2011.9 

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    Event date： 2011.9

    Presentation type：Oral presentation (general)  

    Venue：札幌市   Country：Japan  

  • ダブルペロブスカイト酸化物 Sr2-xLaxCoTiO6-δの熱電特性と構造および金属-半導体転移

    菅原徹, 大瀧倫卓

    第10回日本熱電学会学術講演会（TSJ2011）  2011.8 

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    Event date： 2011.8

    Presentation type：Oral presentation (general)  

    Venue：札幌市   Country：Japan  

  • ナノ複合構造による酸化物熱電変換材料の高性能化 Invited

    大瀧倫卓

    日本セラミックス協会第45回基礎科学部会セミナー  2011.8 

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    Event date： 2011.8

    Presentation type：Oral presentation (general)  

    Venue：鹿児島市   Country：Japan  

  • Heavy Ions Doping Coupled with Metallic Nanoinclusions: An effective way to improve the thermoelectric performance of p-type layered cobalt oxide materials International conference

    Ngo Van Nong, Nini Pryds, Soren Linderoth, Michitaka Ohtaki

    The 30th International Conference on Thermoelectrics (ICT-2011)  2011.7 

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    Event date： 2011.7

    Presentation type：Oral presentation (general)  

    Country：United States  

  • Thermoelectric Properties of ZnO with Multinary Doping International conference

    Michitaka Ohtaki, Kiyoshi Yamamoto, Yuki Iwano

    The 30th International Conference on Thermoelectrics (ICT-2011)  2011.7 

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    Event date： 2011.7

    Presentation type：Oral presentation (general)  

    Country：United States  

  • Oxide Ceramics Promising for Thermoelectric Power Generation from Mid-to-high Temperature Waste Heat【招待講演・基調講演】 Invited International conference

    2011.7 

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    Event date： 2011.7

    Presentation type：Oral presentation (invited, special)  

    Venue：Cairns   Country：Australia  

  • Anomalous Thermal Conductivity Reduction in ZnO by Binary Doping for Thermoelectric Applications International conference

    Michitaka Ohtaki, Kiyoshi Yamamoto, Yuki Iwano

    12th Conference of the European Ceramic Society (ECerS-XII)  2011.6 

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    Event date： 2011.6

    Presentation type：Oral presentation (general)  

    Country：Sweden  

  • Thermal and Electrical Properties of Defect Pyrochlore Oxides with Highly Mobile Cations in Cage-like Structure International conference

    Michitaka Ohtaki, So Miyaishi

    2011 MRS Spring Meeting  2011.4 

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    Event date： 2011.4

    Country：United States  

  • Recent Development of Metal Oxides on Heat-to-electricity Direct Conversion for Recuperating Decentralized Waste Heat Energy【招待講演】 Invited International conference

    2011.4 

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    Event date： 2011.4

    Presentation type：Oral presentation (general)  

    Venue：Las Vegas   Country：United States  

  • 自己組織化によるナノ構造の構築と電磁気・エネルギー機能 Invited

    大瀧倫卓

    日本化学会第91春季年会  2011.3 

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    Event date： 2011.3

    Presentation type：Oral presentation (invited, special)  

    Venue：横浜市   Country：Japan  

  • 電解析出法による層状マンガン-コバルト酸化物超格子薄膜の自己組織合成

    伊勢田幸範, 大瀧倫卓

    日本セラミックス協会2011年年会  2011.3 

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    Event date： 2011.3

    Presentation type：Oral presentation (general)  

    Venue：浜松市   Country：Japan  

  • Decoupling of Electrical and Thermal Conduction in Co-doped ZnO with Spontaneously Formed Nanocomposite Structure International conference

    Michitaka Ohtaki, Kiyoshi Yamamoto

    2010 International Congress of Pacific Basin Societies (PACIFICHEM2010)  2010.12 

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    Event date： 2010.12

    Presentation type：Oral presentation (general)  

    Country：United States  

  • Structure and Thermoelectric Properties of La-doped Double-Perovskite Oxide Sr2CoTiO6 International conference

    Tohru Sugahara, Michitaka Ohtaki, Ken Kurosaki, Hiroaki Muta, Yuji Ohishi, Shinsuke Yamanaka

    2010 MRS Fall Meeting  2010.11 

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    Event date： 2010.11 - 2010.12

    Presentation type：Oral presentation (general)  

    Country：United States  

  • Structure and Thermoelectric Properties of Double-Perovskite Oxides A2FeMoO6 and A2MnMoO6 with A-site substitution International conference

    Tohru Sugahara, Michitaka Ohtaki, Ken Kurosaki, Hiroaki Muta, Yuji Ohishi, Shinsuke Yamanaka

    The 3rd International Congress on Ceramics (ICC-3)  2010.11 

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    Event date： 2010.11

    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Self-assembly Synthesis and Photocatalytic Properties of Layered Oxide Structure with Single-nm Thickness International conference

    Michitaka Ohtaki, Masatoshi Mori

    The 3rd International Congress on Ceramics (ICC-3)  2010.11 

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    Event date： 2010.11

    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Thermal and Electrical Properties of Metal Oxides with Rattling Cations in Cage-like Structure International conference

    Michitaka Ohtaki, So Miyaishi

    The 3rd International Congress on Ceramics (ICC-3)  2010.11 

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    Event date： 2010.11

    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Synthesis and Transport Properties of Metal Oxides with Cage-like Structure Containing “Rattling” Cations International conference

    2010.9 

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    Event date： 2010.9

    Presentation type：Oral presentation (general)  

    Venue：Biarriz   Country：France  

  • Electrical and Thermal Transport Properties of ZnO Thermoelectric Oxide Doped with Al and Ga International conference

    Michitaka Ohtaki, Kiyoshi Yamamoto

    The 12th International Conferences on Modern Materials & Technologies (CIMTEC2010) / 5th Forum of New Materials  2010.6 

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    Event date： 2010.6

    Presentation type：Oral presentation (general)  

    Country：Italy  

  • Influence of Selective Site Substitution on the Thermal Conductivity of Single- and Double-perovskite Oxides International conference

    Tohru Sugahara, Michitaka Ohtaki

    The 29th International Conference on Thermoelectrics  2010.6 

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    Event date： 2010.5 - 2010.6

    Presentation type：Oral presentation (general)  

    Country：China  

  • Unconventional Reduction of Lattice Thermal Conductivity in Metal Oxides International conference

    Michitaka Ohtaki, Tomohiro Masuda, Shinobu Teraoka, Kiyoshi Yamamoto

    The 29th International Conference on Thermoelectrics  2010.6 

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    Event date： 2010.5 - 2010.6

    Presentation type：Oral presentation (general)  

    Country：China  

  • Effects of Ga Substitution for Co-site on the High-temperature Thermoelectric Properties and Microstructure of the Cobalt-based Oxides International conference

    Ngo Van Nong, S. Yanagiya, J. Xua, S. Monica, Nini Pryds, Michitaka Ohtaki

    The 29th International Conference on Thermoelectrics  2010.6 

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    Event date： 2010.5 - 2010.6

    Presentation type：Oral presentation (general)  

    Country：China  

  • Oxide Thermoelectric Materials for Power Generation Recuperating Waste Heat Energy International conference

    Michitaka Ohtaki

    The 5th International Symposium on Novel Carbon Resource Sciences  2010.4 

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    Event date： 2010.4

    Presentation type：Oral presentation (general)  

    Country：Australia  

  • Thermoelectric properties and bulk nanocomposite structure of co-doped ZnO Invited International conference

    Michitaka Ohtaki

    Wilhelm and Else Heraeus Seminar on "Nanostructured Thermoelectric Materials"  2010.2 

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    Event date： 2010.2

    Presentation type：Oral presentation (general)  

    Country：Germany  

  • Selective Suppression of Lattice Thermal Conductivity in Oxide Thermoelectric Materials for Higher ZT International conference

    Michitaka Ohtaki, Shinobu Teraoka, Kiyoshi Yamamoto, Tohru Sugahara

    The 34th International Conference and Exposition on Advanced Ceramics and Composites  2010.1 

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    Event date： 2010.1

    Presentation type：Oral presentation (general)  

    Country：United States  

  • 共ドープした酸化亜鉛系熱電変換材料の輸送特性と熱電性能

    大瀧倫卓, 山本清司

    第48回セラミックス基礎科学討論会  2010.1 

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    Event date： 2010.1

    Presentation type：Oral presentation (general)  

    Venue：宜野湾市   Country：Japan  

  • 熱電材料におけるペロブスカイト型酸化物の結晶構造と熱物性

    菅原徹, 大瀧倫卓

    第48回セラミックス基礎科学討論会  2010.1 

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    Event date： 2010.1

    Presentation type：Oral presentation (general)  

    Venue：宜野湾市   Country：Japan  

  • 中高温廃熱利用発電を目的とした金属酸化物熱電変換材料の開発 Invited

    大瀧倫卓

    第87回産学交流サロン「魅力的な物性を持つマテリアル：金属酸化物～機能性　金属酸化物の応用と今後の展望について～」  2009.12 

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    Event date： 2009.12

    Presentation type：Oral presentation (general)  

    Venue：北九州学術研究都市   Country：Japan  

  • 界面活性剤ミセルを鋳型としたナノ層状構造タンタル酸Naの自己集積合成と光触媒特性

    森雅俊, 大瀧倫卓

    2009年日本化学会西日本大会  2009.11 

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    Event date： 2009.11

    Presentation type：Oral presentation (general)  

    Venue：愛媛大学   Country：Japan  

  • Oxide Ceramic Materials for Mid-to-High Temperature Thermoelectric Power Generation Invited International conference

    M. Ohtaki

    Materials Science and Technology 2009 Conference & Exhibition  2009.10 

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    Event date： 2009.10

    Presentation type：Oral presentation (general)  

    Country：United States  

  • Unconventional Reduction of Thermal Conductivity in Thermoelectric Oxides International conference

    M. Ohtaki, T. Masuda, S. Teraoka, K. Yamamoto

    The IUMRS International Conference on Advanced Materials 2009  2009.9 

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    Event date： 2009.9

    Presentation type：Oral presentation (general)  

    Country：Brazil  

  • 分子集合体鋳型を用いた電解酸化析出法による酸化物ナノ超格子薄膜の自己組織合成

    大瀧倫卓, 池田寛, 伊勢田幸範

    日本セラミックス協会第22回秋季シンポジウム  2009.9 

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    Event date： 2009.9

    Presentation type：Oral presentation (general)  

    Venue：愛媛大学   Country：Japan  

  • 酸化物熱電変換材料における熱伝導率低減と材料開発戦略 Invited

    大瀧倫卓

    日本セラミックス協会第22回秋季シンポジウム  2009.9 

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    Event date： 2009.9

    Presentation type：Oral presentation (general)  

    Venue：愛媛大学   Country：Japan  

  • ペロブスカイト型酸化物熱電材料における熱伝導率の低減と置換サイト依存性

    菅原徹, 大瀧倫卓

    日本セラミックス協会第22回秋季シンポジウム  2009.9 

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    Event date： 2009.9

    Presentation type：Oral presentation (general)  

    Venue：愛媛大学   Country：Japan  

  • ペロブスカイト型酸化物の構造相転移に伴う熱伝導率の特異的低減

    寺岡忍, 大瀧倫卓

    日本セラミックス協会第22回秋季シンポジウム  2009.9 

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    Event date： 2009.9

    Presentation type：Oral presentation (general)  

    Venue：愛媛大学   Country：Japan  

  • Aサイト置換したダブルペロブスカイト型酸化物Sr2-xBaxFeMoO6の結晶構造と高温熱電特性

    菅原徹, 大瀧倫卓

    応用物理学会2009年秋季講演会  2009.9 

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    Event date： 2009.9

    Presentation type：Oral presentation (general)  

    Venue：富山大学   Country：Japan  

  • Co-Doping of ZnO with Al and Ga for Efficient Thermal Conductivity Reduction International conference

    M. Ohtaki, K. Yamamoto

    European Congress on Advanced Materials and Processes  2009.9 

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    Event date： 2009.9

    Presentation type：Oral presentation (general)  

    Country：United Kingdom  

  • ナノ多孔質化AlドープZnOの合成プロセスにおける空孔形成材料の分散度と熱電特性

    山本五郎, 大瀧倫卓

    第6回日本熱電学会学術講演会  2009.8 

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    Event date： 2009.8

    Presentation type：Oral presentation (general)  

    Venue：東北大学   Country：Japan  

  • Sr2-xBaxFeMoO6（0.0≦x≦2.0）の結晶構造と高温熱電特性

    菅原徹, 大瀧倫卓

    第6回日本熱電学会学術講演会  2009.8 

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    Event date： 2009.8

    Presentation type：Oral presentation (general)  

    Venue：東北大学   Country：Japan  

  • AlとGaを共ドープしたZnO系酸化物の微細構造と熱電特性

    山本清司, 大瀧倫卓

    第6回日本熱電学会学術講演会  2009.8 

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    Event date： 2009.8

    Presentation type：Oral presentation (general)  

    Venue：東北大学   Country：Japan  

  • ナノ多孔質化AlドープZnOの合成プロセスにおける空孔形成材料の分散度と熱電特性

    山本五郎, 大瀧倫卓

    第6回日本熱電学会学術講演会  2009.8 

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    Event date： 2009.8

    Presentation type：Oral presentation (general)  

    Venue：東北大学   Country：Japan  

  • Lattice Thermal Conductivity and Thermoelectric Properties of Al/Ga co-doped ZnO International conference

    M. Ohtaki, K. Yamamoto

    The 28th International Conference on Thermoelectrics (ICT-2009)  2009.7 

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    Event date： 2009.7

    Presentation type：Oral presentation (general)  

    Country：Germany  

  • Thermoelectric Properties of Double Perovskite-type Oxides: Role of A- and B-site Cations in the Perovskite Structure on the Thermal Conductivity Invited International conference

    M. Ohtaki, T. Sugahara

    Thermopower Symposium CH-2009 Novel Thermoelectric Materials, Devices and Applications  2009.7 

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    Event date： 2009.7

    Presentation type：Oral presentation (general)  

    Country：Switzerland  

  • Anomalous Reduction in the Thermal Conductivity of Peroskite-type Oxide with Structural Phase Transition Invited International conference

    M. Ohtaki and S. Teraoka

    CRISMAT Workshop on "Relationship between (Nano)structure and Thermoelectric Properties"  2009.7 

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    Event date： 2009.7

    Presentation type：Oral presentation (general)  

    Country：France  

  • ポリマー微粒子によるZnO系酸化物のナノ多孔質化と熱電変換特性

    山本五郎, 大瀧倫卓

    第46回化学関連支部合同九州大会  2009.7 

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    Event date： 2009.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • ダブルペロブスカイト型酸化物における温度誘起構造相転移と増強フォノン散乱

    寺岡忍, 大瀧倫卓

    第46回化学関連支部合同九州大会  2009.7 

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    Event date： 2009.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • 二分子膜ミセルを鋳型としたナノ層状NaTaO3の合成と光触媒活性

    森雅俊, 大瀧倫卓

    第46回化学関連支部合同九州大会  2009.7 

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    Event date： 2009.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • AlとGaを共ドープしたZnO系酸化物の熱伝導率と熱電特性

    山本清司, 大瀧倫卓

    第46回化学関連支部合同九州大会  2009.7 

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    Event date： 2009.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • ペロブスカイト型酸化物における熱伝導率のA, B サイト置換依存性

    菅原徹, 大瀧倫卓

    2009年春季 第56回応用物理学関係連合講演会  2009.3 

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    Event date： 2009.3 - 2009.4

    Presentation type：Oral presentation (general)  

    Venue：筑波大学   Country：Japan  

  • 分子集合体鋳型を用いたナノ層状構造酸化物の合成と光触媒活性

    森雅俊, 大瀧倫卓

    日本化学会第89春季年会  2009.3 

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    Event date： 2009.3

    Presentation type：Oral presentation (general)  

    Venue：日本大学理工学部   Country：Japan  

  • 希土類金属とアルミニウムを共ドープしたZnOの熱電特性

    徳留弘優, 大瀧倫卓

    日本セラミックス協会2009年年会  2009.3 

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    Event date： 2009.3

    Presentation type：Oral presentation (general)  

    Venue：東京理科大学野田キャンパス   Country：Japan  

  • ダブルペロブスカイト型酸化物 Sr2-xBaxFeMoO6 の結晶構造と熱電特性

    菅原徹, 大瀧倫卓, 相馬岳

    日本セラミックス協会2009年年会  2009.3 

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    Event date： 2009.3

    Presentation type：Oral presentation (general)  

    Venue：東京理科大学野田キャンパス   Country：Japan  

  • 未利用熱エネルギー回収のための酸化物熱電変換材料の開発 Invited

    大瀧倫卓

    平成20年度日本伝熱学会九州支部講演会  2009.3 

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    Event date： 2009.3

    Presentation type：Oral presentation (general)  

    Venue：九州大学工学部   Country：Japan  

  • Structure and Thermoelectric Properties of Ba- and K-doped Sr2FeMoO6 Double-perovskite Oxides International conference

    T. Sugahara, M. Ohtaki, T. Souma

    The 33rd International Conference and Exposition on Advanced Ceramics and Composites  2009.1 

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    Event date： 2009.1

    Country：United States  

  • Binary Doping of ZnO for High ZT n-type Oxide Thermoelectric Materials International conference

    M. Ohtaki, K. Araki, K. Yamamoto

    The 33rd International Conference and Exposition on Advanced Ceramics and Composites  2009.1 

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    Event date： 2009.1

    Country：United States  

  • Thermal and Thermoelectric Properties Al-doped ZnO Ceramics with Highly Dispersed Nanovoid Structures International conference

    M. Ohtaki, K. Araki

    IUMRS-International Conference in Asia 2008  2008.12 

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    Event date： 2008.12

    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Transport Properties and Thermoelectric Performance of Binary-doped ZnO Ceramics International conference

    M. Ohtaki, K. Araki, K. Yamamoto

    IUMRS-International Conference in Asia 2008  2008.12 

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    Event date： 2008.12

    Presentation type：Oral presentation (general)  

    Country：Japan  

  • バルクナノコンポジット構造を有する酸化物熱電材料の合成と熱電性能 Invited

    大瀧倫卓

    粉体粉末冶金協会平成20年度秋季大会（第102回講演大会）  2008.11 

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    Event date： 2008.11

    Presentation type：Oral presentation (general)  

    Venue：九州大学医学部   Country：Japan  

  • Self-Assembly Synthesis and Electromagnetic Peculiarities of 2-D Transition Metal Oxide Superlattices with Molecular Assembly Template International conference

    M. Ohtaki, R. Hayashi, M. Mori

    PRiME 2008 Joint International Meeting: 214th Meeting of ECS and 2008 Fall Meeting of The Electrochemical Society of Japan  2008.10 

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    Event date： 2008.10

    Presentation type：Oral presentation (general)  

    Country：United States  

  • 部分元素置換したダブルペロブスカイト型酸化物Sr2FeMoO6の熱電特性

    菅原徹, 大瀧倫卓, 相馬岳

    日本セラミックス協会第21回秋季シンポジウム  2008.9 

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    Event date： 2008.9

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • 共ドープしたZnO系セラミックスの熱電特性

    大瀧倫卓, 荒木和彦, 山本清司

    日本セラミックス協会第21回秋季シンポジウム  2008.9 

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    Event date： 2008.9

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • Molecular Assembly Templated Electrochemical Synthesis of Oxide Nano-Superlattice Thin Films and Their Electronic Properties International conference

    M. Ohtaki, H. Ikeda

    The 59th Annual Meeting of the International Society of Electrochemistry  2008.9 

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    Event date： 2008.9

    Presentation type：Oral presentation (general)  

    Country：Spain  

  • セラミックハニカム中で焼結した酸化物熱電モジュールの試作

    大西恭平, 大瀧倫卓

    第5回日本熱電学会学術講演会  2008.8 

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    Event date： 2008.8

    Presentation type：Oral presentation (general)  

    Venue：早稲田大学大久保キャンパス   Country：Japan  

  • Gaを共ドープしたZnO系酸化物の熱電特性

    山本清司, 荒木和彦, 大瀧倫卓

    第5回日本熱電学会学術講演会  2008.8 

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    Event date： 2008.8

    Presentation type：Oral presentation (general)  

    Venue：早稲田大学大久保キャンパス   Country：Japan  

  • 緻密焼結したMn系ダブルペロブスカイト酸化物の熱電特性

    菅原徹, 大瀧倫卓, 相馬岳

    第5回日本熱電学会学術講演会  2008.8 

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    Event date： 2008.8

    Presentation type：Oral presentation (general)  

    Venue：早稲田大学大久保キャンパス   Country：Japan  

  • High Thermoelectric Performance of Dually Doped ZnO Ceramics International conference

    M. Ohtaki, K. Araki

    The 27th International Conference on Thermoelectrics  2008.8 

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    Event date： 2008.8

    Presentation type：Oral presentation (general)  

    Country：United States  

  • SrTiO3系酸化物の微細構造と熱電特性

    山本清司, 大瀧倫卓

    第45回化学関連支部合同九州大会  2008.7 

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    Event date： 2008.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • 部分元素置換したダブルペロブスカイト型酸化物の構造と熱電特性

    菅原徹, 大瀧倫卓

    第45回化学関連支部合同九州大会  2008.7 

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    Event date： 2008.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • 分子鋳型を用いた電解酸化法による酸化物ナノ超格子の合成と物性

    池田寛, 大瀧倫卓

    第45回化学関連支部合同九州大会  2008.7 

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    Event date： 2008.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • 自己組織化した二次元量子構造酸化物半導体の合成と物性

    森雅俊, 大瀧倫卓

    第45回化学関連支部合同九州大会  2008.7 

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    Event date： 2008.7

    Presentation type：Oral presentation (general)  

    Venue：北九州国際会議場   Country：Japan  

  • Transport Properties and Thermoelectric Performance of Oxide Ceramics with Nanovoid Structure International conference

    M. Ohtaki, K. Araki

    2nd International Congress on Ceramics  2008.7 

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    Event date： 2008.6 - 2008.7

    Presentation type：Oral presentation (general)  

    Country：Italy  

  • Recent Progress in Oxide Thermoelectric Materials - electron correlation, quantum wells, and bulk nanocomposites - Invited International conference

    M. Ohtaki

    Empa Seminar  2008.6 

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    Event date： 2008.6

    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Country：Switzerland  

  • Thermoelectric Properties of ZnO-based Oxide with Nanocomposite Structure Invited International conference

    M. Ohtaki

    2nd Workshop on Anisotropic Science and Technology of Materials and Devices (ASTMD-2)  2008.6 

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    Event date： 2008.6

    Presentation type：Oral presentation (general)  

    Country：Turkey  

  • 分子集合体鋳型を用いた金属酸化物ナノ超格子薄膜の電解酸化合成

    池田寛, 大瀧倫卓

    ナノ学会第6回大会  2008.5 

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    Event date： 2008.5

    Presentation type：Oral presentation (general)  

    Venue：九州大学   Country：Japan  

  • 層状酸化鉄ナノ超格子の自己組織合成と磁気特性

    大瀧倫卓, 林遼

    ナノ学会第6回大会  2008.5 

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    Event date： 2008.5

    Presentation type：Oral presentation (general)  

    Venue：九州大学   Country：Japan  

  • 緻密焼結したダブルペロブスカイト型酸化物 Sr2-xBaxFeMoO6 の熱電特性

    菅原徹, 大瀧倫卓

    日本セラミックス協会2008年年会  2008.3 

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    Presentation type：Oral presentation (general)  

    Venue：長岡技術科学大学   Country：Japan  

  • Enhanced Thermoelectric Performance of Nanostructured ZnO: A possibility of selective phonon scattering and carrier energy filtering by nanovoid structure International conference

    M. Ohtaki, R. Hayashi

    The 25th International Conference on Thermoelectrics (ICT-2006)  2006.8 

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    Presentation type：Oral presentation (general)  

    Country：Austria  

  • Thermoelectric properties and local electronic structure of rare earth-doped Ca3Co2O6 International conference

    N. V. Nong, M. Ohtaki

    The 25th International Conference on Thermoelectrics (ICT-2006)  2006.8 

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    Presentation type：Oral presentation (general)  

    Country：Austria  

  • Relation between Zn content and thermoelectric properties of Zn4+xSb3 (-0.12≦x≦0.12) International conference

    2006.8 

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    Presentation type：Oral presentation (general)  

    Venue：Vienna   Country：Austria  

  • Synthesis and Rietveld analysis for CoSb3 compounds prepared by Sb self-flux method (II) International conference

    T. Souma, M. Ohtaki

    The 25th International Conference on Thermoelectrics (ICT-2006)  2006.8 

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    Presentation type：Oral presentation (general)  

    Country：Austria  

  • Optimization on preparation conditions in Sb self-flux method for CoTiSb and NiTiSb Half-Heusler compounds International conference

    T. Souma, M. Ohtaki

    The 25th International Conference on Thermoelectrics (ICT-2006)  2006.8 

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    Presentation type：Oral presentation (general)  

    Country：Austria  

  • Fabrication and power generation characteristics of p-NaCo2O4/n-ZnO oxide thermoelectric modules International conference

    T. Souma, M. Ohtaki, M. Shigeno, Y. Ohba, N. Nakamura, T. Shimozaki

    The 25th International Conference on Thermoelectrics (ICT-2006)  2006.8 

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    Presentation type：Oral presentation (general)  

    Country：Austria  

  • 高分散ナノボイド構造を導入したAlドープZnOの熱電特性

    大瀧倫卓, 林亮介

    第3回日本熱電学会学術講演会  2006.8 

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    Presentation type：Oral presentation (general)  

    Venue：湘南工科大学   Country：Japan  

  • Nanostructured ZnO-based Oxide: A Promising Thermoelectric Material For High-Temperature Waste Heat Recovery International conference

    M. Ohtaki, R. Hayashi

    The 9th Eurasia Conference on Chemical Science (EuAsC2S-9)  2006.9 

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    Presentation type：Oral presentation (general)  

    Country：Turkey  

  • Synthesis and Magnetic Properties of Lamellar Iron Oxide-Surfactant Nanocomposite with Self-assembly Superlattice Structure International conference

    M. Ohtaki, Y. Uchino, R. Hayashi

    The 5th International Conference on Inorganic Materials  2006.9 

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    Presentation type：Oral presentation (general)  

    Country：Slovenia  

  • ナノ粒子分散プロセスによりナノボイド構造を導入したAlドープZnO系酸化物の熱電性能

    大瀧倫卓, 林亮介

    日本セラミックス協会第19回秋季シンポジウム  2006.9 

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    Presentation type：Oral presentation (general)  

    Venue：山梨大学   Country：Japan  

  • Thermoelectric Properties of Rare Earth-doped Ca-Co-O Oxides

    N. V. Nong, M, Ohtaki

    2006.9 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • ナノボイド構造ZnOにおける格子欠陥生成と熱電性能

    大瀧倫卓, 林亮介

    2006年日本化学会西日本大会  2006.11 

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    Presentation type：Oral presentation (general)  

    Venue：琉球大学   Country：Japan  

  • 自己集積した酸化鉄ナノ超格子の構造観察と磁気特性

    林遼, 大瀧倫卓

    2006年日本化学会西日本大会  2006.11 

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    Presentation type：Oral presentation (general)  

    Venue：琉球大学   Country：Japan  

  • Synthesis and Photocatalytic Properties of Nanosized Layered-TiO2 Intercalated with Linear Alcohols

    2006.12 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Self-Assembly Synthesis of Iron Oxide Superlattice Showing Anomalous Spin-phase Transitions Driven by Highly Regulated Interlayer Nanospace Invited International conference

    M. Ohtaki, R. Hayashi

    The Second International Symposium on Chemistry of Coordination Space (ISCCS2006)  2006.12 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Jointing Technique and Power Generation Characteristics of p-NaCo2O4/n-ZnO Oxide Thermoelectric Modules

    2006.12 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Thermoelectric Performance of ZnO-based Oxide Enhanced by Nanovoid Structure International conference

    M. Ohtaki, K. Araki, R. Hayashi

    The 8th International Symposium on Eco-Materials Processing and Design (ISEPD 2007)  2007.1 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • High Thermoelectric Performance of Al-doped ZnO Induced by Nanovoid Structure International conference

    M. Ohtaki, R. Hayashi, K. Araki

    The 31st International Cocoa Beach Conference on Advanced Ceramics and Composites  2007.1 

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    Presentation type：Oral presentation (general)  

    Country：United States  

  • 高分散ナノボイド構造を有するZnO系酸化物の構造と熱電特性

    荒木和彦, 大瀧倫卓

    日本セラミックス協会2007年年会  2007.3 

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    Presentation type：Oral presentation (general)  

    Venue：武蔵工業大学   Country：Japan  

  • ペロブスカイト型酸化物における酸素イオン副格子の構造相転移とフォノン散乱

    益田智博, 大瀧倫卓

    日本セラミックス協会2007年年会  2007.3 

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    Presentation type：Oral presentation (general)  

    Venue：武蔵工業大学   Country：Japan  

  • High-temperature Thermoelectric Properties of Ca3Co4O9 with Late Rare-Earth Metals Substitutions

    N. V. Nong, M. Ohtaki

    2007.3 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Power Generation Characteristics of Oxide Thermoelectric Modules Incorporating Nanostructured ZnO Sintered Materials International conference

    T. Souma, M. Ohtaki, K. Ohnishi, M. Shigeno , Y. Ohba, N. Nakamura, T. Shimozaki

    The 26th International Conference on Thermoelectrics (ICT-2007)  2007.6 

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    Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • Thermoelectric Properties of Sintered ZnO Incorporating Nanovid Structure: Influence of the Size and Number Density of Nanovoids International conference

    M. Ohtaki, R. Hayashi, K. Araki

    2007.6 

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    Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • Self-Assembly Synthesis and Electromagnetic Properties of 2D Transition Metal Oxides Interleaved by Highly Regulated Nanospace International conference

    M. Ohtaki, R. Hayashi

    Japan-USA Joint Symposium on Chemistry of Coordination Space (JUJS-CCS 2007)  2007.6 

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    Country：United States  

  • Aサイト置換したダブルペロブスカイト型酸化物の熱電特性

    菅原徹, 大瀧倫卓

    第44回化学関連支部合同九州大会  2007.7 

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    Venue：北九州国際会議場   Country：Japan  

  • 高分散ナノボイド構造を有するZnO型酸化物のフォノン散乱と熱電特性

    荒木和彦, 大瀧倫卓

    第44回化学関連支部合同九州大会  2007.7 

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    Venue：北九州国際会議場   Country：Japan  

  • RFe2O4系n型層状酸化物の熱電性能

    上中達也, 大瀧倫卓

    第44回化学関連支部合同九州大会  2007.7 

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    Venue：北九州国際会議場   Country：Japan  

  • ペロブスカイト型酸化物における酸素イオン副格子の秩序-無秩序転移とフォノン散乱

    益田智博, 大瀧倫卓

    第44回化学関連支部合同九州大会  2007.7 

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    Venue：北九州国際会議場   Country：Japan  

  • 分子鋳型電解析出法による層状酸化物薄膜の合成

    池田寛, 大瀧倫卓

    第44回化学関連支部合同九州大会  2007.7 

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    Venue：北九州国際会議場   Country：Japan  

  • セラミックハニカムを利用した酸化物熱電モジュールの高密度実装プロセスの開発

    大西恭平, 大瀧倫卓

    第44回化学関連支部合同九州大会  2007.7 

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    Venue：北九州国際会議場   Country：Japan  

  • Structure and Magnetic Properties of Iron Oxide Self-assembly Superlattice Synthesized by Hydrothermal Treatment of Surfactant-directed Lamellar Mesophase International conference

    M. Ohtaki, R. Hayashi

    Second International Symposium Advanced Micro- and Mesoporous Materials (micro2007)  2007.9 

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    Presentation type：Oral presentation (general)  

    Country：Bulgaria  

  • 自己組織合成で得られる遷移金属酸化物ナノ超格子の微細構造と物性

    大瀧倫卓, 池田寛, 林遼

    日本セラミックス協会第20回秋季シンポジウム  2007.9 

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    Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • Effect of Rare-earth Substitution for Ca on High-temperature Thermoelectric Properties and Microstructure of Ca3Co4O9

    N. V. Nong, M. Ohtaki

    2007.9 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • 分子鋳型電解析出法によるMn酸化物ナノ超格子薄膜の自己組織合成と物性

    池田寛, 大瀧倫卓

    2007年電気化学秋季大会  2007.9 

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    Presentation type：Oral presentation (general)  

    Venue：東京工業大学   Country：Japan  

  • Thermoelectric Performance of Oxide Ceramics with Nanovoid Structure International conference

    M. Ohtaki, K. Araki

    7th Pacific Rim Conference on Ceramic and Glass Technology (PacRim7)  2007.11 

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    Presentation type：Oral presentation (general)  

    Country：China  

  • Development of Oxide Thermoelectric Modules with a High Density Packing by Using Ceramic Honeycomb International conference

    K. Ohnishi, M. Ohtaki

    The 9th Cross Straits Symposium on Materials, Energy and Environmental Sciences (CSS9)  2007.11 

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    Country：Korea, Republic of  

  • Molecular Templating Electrochemical Synthesis of Nano-Superlattice Thin Films of Layered Oxides and Their Electromagnetic Properties International conference

    H. Ikeda, M. Ohtaki

    The 9th Cross Straits Symposium on Materials, Energy and Environmental Sciences (CSS9)  2007.11 

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    Country：Korea, Republic of  

  • Suppression of Thermal Conductivity In Metal Oxides Due to Order-Disorder Transition of Oxide Ion Sublattice International conference

    T. Masuda, M. Ohtaki

    The 9th Cross Straits Symposium on Materials, Energy and Environmental Sciences (CSS9)  2007.11 

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    Country：Korea, Republic of  

  • Thermoelectric Properties of Double-Perovskite Oxide A2B'B""O6 with A-Site Substitution International conference

    T. Sugahara, M. Ohtaki, T. Souma

    The 9th Cross Straits Symposium on Materials, Energy and Environmental Sciences (CSS9)  2007.11 

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    Country：Korea, Republic of  

  • Self-Assembly Synthesis and Electromagnetic Properties of 2D Nanosized Metal Oxides with Superlattice-like Structure

    M. Ohtaki, H. Ikeda, R. Hayashi

    2007.12 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Synthesis and Rietveld Analysis for F-doped NaCo2O4 Thermoelectric Materials

    T. Souma, D. Isobe, M. Ohtaki

    2007.12 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • Thermal Conductivity and Thermoelectric Performance of Al-doped ZnO with Nanovoid Structure International conference

    M. Ohtaki, K. Araki

    The 10th Eurasia Conference on Chemical Sciences (EuAsC2S-10)  2008.1 

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    Presentation type：Oral presentation (general)  

  • Nano-scale Structure Engineering in Oxide Thermoelectric Materials for Power Generation Applications Invited International conference

    M. Ohtaki

    The 32nd International Conference and Exposition on Advanced Ceramics and Composites  2008.1 

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    Presentation type：Oral presentation (general)  

    Country：United States  

  • Thermoelectric Performance and Transport Properties of Oxide Materials with Nanosized Defect Structures International conference

    M. Ohtaki, H. Hirobe, R. Hayashi

    11th International Conferences on Modern Materials and Technologies (CIMTEC 2006)  2006.6 

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    Presentation type：Oral presentation (general)  

    Country：Italy  

  • 還元処理によりNiナノ粒子を溶離析出したSrTiO3セラミックスの熱電性能

    大瀧倫卓、平田慎治、末國晃一郎

    日本セラミックス協会九州支部秋季研究発表会  2019.11 

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    Event date： 2019.11

    Presentation type：Oral presentation (general)  

    Venue：九州大学筑紫キャンパス   Country：Japan  

  • ZnOとGaNを複合した焼結体の合成と熱電特性

    有吉真、末國晃一郎、大瀧倫卓

    日本セラミックス協会九州支部秋季研究発表会  2019.11 

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    Event date： 2019.11

    Venue：九州大学筑紫キャンパス   Country：Japan  

  • ゾルゲル法によるSrTiO3/TiNコアシェル構造ナノ粒子の合成と構造制御

    長崎青波、末國晃一郎、大瀧倫卓、渡邊厚介

    日本セラミックス協会九州支部秋季研究発表会  2019.11 

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    Event date： 2019.11

    Venue：九州大学筑紫キャンパス   Country：Japan  

  • Anomalous Extension of the Solubility Limit in ZnO Leading to an Extremely Low Thermal Conductivity International conference

    Michitaka Ohtaki

    2nd International Workshop on Materials and Applications for Next-generation Utilization of Thermoelectric Energy Conversion (MANUTEC-2)  2019.11 

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    Event date： 2019.11

    Presentation type：Oral presentation (general)  

    Country：Japan  

  • SrTiO3系酸化物/TiNコアシェル構造ナノ粒子の合成と構造制御

    長﨑青波、渡邊厚介、末國晃一郎、大瀧倫卓

    第56回化学関連支部合同九州大会  2019.7 

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    Event date： 2019.7

    Venue：北九州国際会議場   Country：Japan  

  • Cu3(Sb, Ge, P)S4の熱電物性

    谷下太基、末國晃一郎、西当弘隆、李哲虎、大瀧倫卓

    第56回化学関連支部合同九州大会  2019.7 

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    Event date： 2019.7

    Venue：北九州国際会議場   Country：Japan  

  • ZnO/GaN複合焼結体の熱電特性

    有吉真、末國晃一郎、大瀧倫卓

    第56回化学関連支部合同九州大会  2019.7 

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    Event date： 2019.7

    Venue：北九州国際会議場   Country：Japan  

  • 溶射法による高速低コストな酸化物熱電モジュールの作製とその評価

    太田克志、大瀧倫卓、増住大地、宮崎康次

    第8回九州若手セラミックフォーラム(KYCF-8)&第48回窯業基礎九州懇話会、2018年9月13〜14日、コテージ・ヒムカ、フェニックス・シーガイア・リゾート（宮崎県宮崎市）  2018.9 

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    Event date： 2018.9

    Venue：フェニックス・シーガイア・リゾート   Country：Japan  

  • 極細金ナノワイヤの異方性成長における条件依存性と光学特性

    石橋史啓、渡邊厚介、大瀧倫卓

    第8回九州若手セラミックフォーラム(KYCF-8)&第48回窯業基礎九州懇話会、2018年9月13〜14日、コテージ・ヒムカ、フェニックス・シーガイア・リゾート（宮崎県宮崎市）  2018.9 

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    Event date： 2018.9

    Venue：フェニックス・シーガイア・リゾート   Country：Japan  

  • Ti2O3の金属-絶縁体転移を利用した熱伝導率可変材料の開発

    西山滉一郎、大瀧倫卓

    第8回九州若手セラミックフォーラム(KYCF-8)&第48回窯業基礎九州懇話会、2018年9月13〜14日、コテージ・ヒムカ、フェニックス・シーガイア・リゾート（宮崎県宮崎市）  2018.9 

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    Event date： 2018.9

    Venue：フェニックス・シーガイア・リゾート   Country：Japan  

  • ZnO系酸化物熱電材料におけるAlとCuの共ドープ効果

    藤原秀明、渡邊厚介、大瀧倫卓

    第8回九州若手セラミックフォーラム(KYCF-8)&第48回窯業基礎九州懇話会、2018年9月13〜14日、コテージ・ヒムカ、フェニックス・シーガイア・リゾート（宮崎県宮崎市）  2018.9 

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    Event date： 2018.9

    Venue：フェニックス・シーガイア・リゾート   Country：Japan  

  • 熱電硫化銅鉱物コルーサイトの結晶構造と熱電特性の制御

    清水裕太、末國晃一郎、斉藤光、吉本大地、Bouyrie Yohan、太田道広、橋國克明、高畠敏郎、波多聰、大瀧倫卓

    第55回化学関連支部合同九州大会  2018.6 

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    Event date： 2018.6

    Venue：北九州国際会議場   Country：Japan  

  • 相転移によって熱伝導率が急峻に増大する酸化物材料の開発

    西山滉一郎、大瀧倫卓

    第55回化学関連支部合同九州大会  2018.6 

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    Event date： 2018.6

    Venue：北九州国際会議場   Country：Japan  

  • ミスフィット層状化合物(SnS)1.2(TiS2)n (n = 1, 2)の熱電物性に対する元素置換効果

    平野達也、末國晃一郎、橋國克明、西当弘隆、李哲虎、大瀧倫卓

    第55回化学関連支部合同九州大会  2018.6 

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    Event date： 2018.6

    Venue：北九州国際会議場   Country：Japan  

  • 溶射法による酸化物熱電モジュールの作製

    太田克志、大瀧倫卓、増住大地、宮崎康次

    第55回化学関連支部合同九州大会  2018.6 

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    Event date： 2018.6

    Venue：北九州国際会議場   Country：Japan  

  • Ti－S系物質の構造次元性と熱電物性

    末國晃一郎、@臼井秀知、@関水準記、@橋國克明、#喬思瑩、#平野達也、@黒木和彦、@高畠敏郎、大瀧倫卓

    第14回日本熱電学会学術講演会（TSJ2017）  2017.9 

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    Event date： 2017.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：大阪大学豊中キャンパス   Country：Japan  

  • 擬一次元物質Sn1.2Ti0.8S3の熱電物性に対するNb置換効果

    #喬思瑩、末國晃一郎、#平野達也、@橋國克明、@高畠敏郎、@西当弘隆、@李哲虎、 大瀧倫卓

    第14回日本熱電学会学術講演会（TSJ2017）  2017.9 

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    Event date： 2017.9

    Language：Japanese  

    Venue：大阪大学豊中キャンパス   Country：Japan  

  • ミスフィット層状化合物(SnS)1.2(TiS2)n (n = 1, 2)の熱電物性に対するSe置換効果

    #平野達也、末國晃一郎、@橋國克明、@高畠敏郎、@西当弘隆、@李哲虎、大瀧倫卓

    第14回日本熱電学会学術講演会（TSJ2017）  2017.9 

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    Event date： 2017.9

    Language：Japanese  

    Venue：大阪大学豊中キャンパス   Country：Japan  

  • N型チオスピネルCu2CoTi3S8のCuのヨウ素酸化抽出によるキャリア密度制御

    @橋國克明、末國晃一郎、渡邊厚介、@Yohan Bouyrie、@太田道広、大瀧倫卓、@高畠敏郎

    第14回日本熱電学会学術講演会（TSJ2017）  2017.9 

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    Event date： 2017.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：大阪大学豊中キャンパス   Country：Japan  

  • AlとCuを共ドープしたZnOの微細組織構造と熱電特性

    #藤原秀明、大瀧倫卓

    第54回化学関連支部合同九州大会  2017.7 

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    Event date： 2017.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • ZnO/GaN複合焼結体の熱電特性

    #松尾伊茉莉、大瀧倫卓

    第54回化学関連支部合同九州大会  2017.7 

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    Event date： 2017.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • Sn1.2-xNbxTi0.8S3 (0 ≤ x ≤ 0.1)の熱電物性

    #喬思瑩、末國晃一郎、大瀧倫卓

    第54回化学関連支部合同九州大会  2017.7 

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    Event date： 2017.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • 分子集合体鋳型法によるナノ層状酸化物の創製

    #大石和希、大瀧倫卓

    第54回化学関連支部合同九州大会  2017.7 

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    Event date： 2017.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • Synthesis and Thermoelectric Properties of Nanoporous Oxide Composites Containing Metal Nanoparticles International conference

    #Shinji Hirata and Michitaka Ohtaki

    The 18th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST18)  2016.12 

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    Event date： 2016.12

    Language：English   Presentation type：Oral presentation (general)  

    Country：China  

  • Synthesis and Thermoelectric Properties of Layered Oxyselenides and Oxyphosphides International conference

    #Takuya Kagawa and Michitaka Ohtaki

    The 18th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST18)  2016.12 

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    Event date： 2016.12

    Language：English  

    Country：China  

  • 複合アニオン含有層状酸化物の合成と熱電物性

    #香川拓也、大瀧倫卓

    第53回化学関連支部合同九州大会  2016.7 

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    Event date： 2016.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • AgをドープしたZnOナノ粒子の構造と光学特性

    #峯一貴、渡邊厚介、大瀧倫卓

    第53回化学関連支部合同九州大会  2016.7 

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    Event date： 2016.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • ゾルゲル法を用いたZnO/TiO2コアシェルナノ構造の形成

    #松崎彰剛、渡邊厚介、大瀧倫卓

    第53回化学関連支部合同九州大会  2016.7 

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    Event date： 2016.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • 導電性パイロクロア型酸化物の結晶構造と熱電特性

    #松田修兵、大瀧倫卓

    第53回化学関連支部合同九州大会  2016.7 

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    Event date： 2016.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • 自己組織電解析出法によるナノ層状酸化物薄膜の合成

    #高出勇海、大瀧倫卓

    第53回化学関連支部合同九州大会  2016.7 

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    Event date： 2016.7

    Language：Japanese  

    Venue：北九州国際会議場（福岡県北九州市）   Country：Japan  

  • Effects of Microstructure on Thermoelectric Properties of Dually Doped ZnO International conference

    #Toshifumi Ogawa and Michitaka Ohtaki

    The 17th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST17)  2015.12 

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    Event date： 2015.12

    Language：English  

    Country：Japan  

  • Thermoelectric Properties of Ferroelectric Oxides Reduced by Hydrogen International conference

    #Yoshinao Kai and Michitaka Ohtaki

    The 17th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST17)  2015.12 

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    Event date： 2015.12

    Language：English  

    Country：Japan  

  • Synthesis of Nanosized Layered Compounds with Molecular Assembly Template and Characteristics Changes with Post-treatment International conference

    #Shin-ichi Hayano and Michitaka Ohtaki

    The 17th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST17)  2015.12 

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    Event date： 2015.12

    Language：English  

    Country：Japan  

  • Synthesis of NaFeO2-xPx by P-doping of Layered Oxide NaFeO2 International conference

    #Yosuke Araki and Michitaka Ohtaki

    The 17th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST17)  2015.12 

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    Event date： 2015.12

    Language：English  

    Country：Japan  

  • Synthesis of Low-dimensional Nanomaterials in Mesoporous Silica International conference

    #Fumihiro Ishibashi and Michitaka Ohtaki

    The 17th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST17)  2015.12 

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    Event date： 2015.12

    Language：English  

    Country：Japan  

  • Synthesis and Thermoelectrics Properties of Nanoporous Oxide Formed by Selective Leaching of Metal Nanoparticles International conference

    #Shinji Hirata and Michitaka Ohtaki

    The 17th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST17)  2015.12 

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    Event date： 2015.12

    Language：English  

    Country：Japan  

  • Switching the Thermal Conductivity by Phase Transitions in Metal Oxides International conference

    #Kei Watanabe and Michitaka Ohtaki

    The 17th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST17)  2015.12 

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    Event date： 2015.12

    Language：English  

    Country：Japan  

  • Oxide Materials with Enhanced Phonon Scattering for Thermoelectric Energy Conversion Invited International conference

    Michitaka Ohtaki

    2015.5 

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    Event date： 2015.5

    Language：English   Presentation type：Oral presentation (general)  

    Country：China  

  • Oxide Thermoelectric Materials as a Novel Promise for Recovering Mid-to-High Temperature Unused Heat Energy International conference

    Michitaka Ohtaki

    The First Joint Symposium of Kyushu University and Yonsei University on Materials Science and Chemical Engineering (SKY-1)  2015.2 

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    Event date： 2015.2

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Cage-like Structure Oxides AAl0.33Te1.67O6 with Unconventional Phonon Scattering International conference

    Kohei Mizuta, Michitaka Ohtaki

    2014.11 

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    Event date： 2014.11

    Language：English  

    Country：Korea, Republic of  

  • Performance Stability of ZnO-based Oxide Thermoelectric Materials at High-temperature International conference

    Taiga Kuragaki, Michitaka Ohtaki

    2014.11 

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    Event date： 2014.11

    Language：English  

    Country：Korea, Republic of  

  • ZnO系酸化物熱電材料の高温安定性

    倉垣 大河, 大瀧 倫卓

    第11回日本熱電学会学術講演会  2014.9 

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    Event date： 2014.9

    Language：Japanese  

    Venue：物質・材料研究機構   Country：Japan  

  • かご状構造酸化物AB2O6 における特異的フォノン散乱

    水田 航平, 大瀧 倫卓

    トークシャワーイン九州2014  2014.9 

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    Event date： 2014.9

    Language：Japanese  

    Venue：宮崎市   Country：Japan  

  • The thermal and thermoelectric properties for the cage-like structure oxide AB2O6 International conference

    Kohei Mizuta, Michitaka Ohtaki

    IUMRS International Conference in Asia (IUMRS-ICA) 2014  2014.8 

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    Event date： 2014.8

    Language：English  

    Country：Japan  

  • 鉄系層状オキシフォスファイドの合成

    荒木 陽輔, 大瀧 倫卓

    第51回化学関連支部合同九州大会  2014.6 

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    Event date： 2014.6

    Language：Japanese  

    Venue：北九州国際会議場   Country：Japan  

  • 材料科学の常識を覆した酸化物熱電変換材料の開発 Invited

    大瀧 倫卓

    第1回精密無機合成化学研究会  2014.1 

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    Event date： 2014.1

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：京都大学化学研究所   Country：Japan  

  • テンプレート法によるメソポーラス酸化物半導体の合成

    中村 智興, 大瀧 倫卓

    日本セラミックス協会九州支部　第3回九州若手セラミックスフォーラム（KYCF-3）及び第43回窯業基礎九州懇話会  2013.9 

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    Event date： 2013.9

    Language：Japanese  

    Venue：休暇村志賀島   Country：Japan  

  • β-パイロクロア型酸化物A Al0.33Te1.67O6(A=K, Rb, Cs)の合成と熱電特性

    水田 航平, 大瀧 倫卓

    日本セラミックス協会九州支部　第3回九州若手セラミックスフォーラム（KYCF-3）及び第43回窯業基礎九州懇話会  2013.9 

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    Event date： 2013.9

    Language：Japanese  

    Venue：休暇村志賀島   Country：Japan  

  • ZnO系熱電材料物性の温度・雰囲気依存性に関する研究

    倉垣 大河, 大瀧 倫卓

    日本セラミックス協会九州支部　第3回九州若手セラミックスフォーラム（KYCF-3）及び第43回窯業基礎九州懇話会  2013.9 

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    Event date： 2013.9

    Language：Japanese  

    Venue：休暇村志賀島   Country：Japan  

  • 分子鋳型法を用いたメソポーラス構造を持つ酸化物半導体の合成

    中村 智興, 大瀧 倫卓

    第50回化学関連支部合同九州大会  2013.7 

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    Event date： 2013.7

    Language：Japanese  

    Venue：北九州国際会議場   Country：Japan  

  • Fabrication and evaluation of uni-leg type Zn-Sb thermoelectric power generation modules International conference

    The 32nd International Conference on Thermoelectrics (ICT2013)  2013.7 

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    Event date： 2013.6 - 2013.7

    Language：English  

    Country：Japan  

  • 酸化物系熱電発電デバイスの研究開発状況

    大瀧 倫卓

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date： 2013.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京電機大学   Country：Japan  

  • Thermoelectric Materials for Heat-to-Electricity Direct Conversion International conference

    Michitaka Ohtaki

    Kyushu Univ-NTU Joint Seminar 2013  2013.1 

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    Event date： 2013.1

    Language：English   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Country：Singapore  

  • Oxide Materials for Heat-to-Electricity Direct Conversion International conference

    Michitaka Ohtaki

    Kyushu Univ-NUS Joint Seminar 2013  2013.1 

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    Event date： 2013.1

    Language：English   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Country：Singapore  

  • Fabrication of oxide thermoelectric modules using ceramic honeycombs International conference

    Takeshi Souma, Tomoyuki Nishihara, Michitaka Ohtaki

    IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012)  2012.9 

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    Event date： 2012.9

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • &#8232;ナノボイドを導入したZnO系酸化物熱電材料の熱電性能と熱サイクル特性

    富田 健稔, 大瀧 倫卓

    &#8232;第9回日本熱電学会学術講演会（TSJ2012）  2012.8 

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    Event date： 2012.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京工業大学   Country：Japan  

  • セラミックハニカム型ユニレグ式酸化物熱電発電モジュールの試作&#8232;

    相馬 岳, 木村 祥梧, 大瀧 倫卓

    &#8232;第9回日本熱電学会学術講演会（TSJ2012）  2012.8 

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    Event date： 2012.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京工業大学   Country：Japan  

  • Thermoelectric Properties of Al‐doped ZnO Prepared by Spark Plasma Sintering International conference

    Li Han, Ngo Van Nong, Le Thanh Hung, Nini Pryds, Michitaka Ohtaki, Søren Linderoth

    2012.7 

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    Event date： 2012.7

    Language：English  

    Venue：Aalborg   Country：Denmark  

  • 単極型セラミックハニカム型酸化物熱電発電モジュールの試作

    木村 祥梧, 相馬 岳, 大瀧 倫卓

    日本金属学会・日本鉄鋼協会中国四国支部第24回若手フォーラム  2012.2 

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    Event date： 2012.2

    Language：Japanese  

    Venue：岡山国際交流センター   Country：Japan  

  • Self-assembly Low-dimensional Oxide Nanostructures for Electromagnetic and Energy-related Materials【招待講演】 Invited International conference

    2011.11 

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    Event date： 2011.11

    Presentation type：Oral presentation (general)  

    Venue：Vung Tau   Country：Viet Nam  

  • Anomalous Thermal Conductivity Reduction of ZnO by Mulinary Doping【招待講演】 Invited International conference

    2011.11 

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    Event date： 2011.11

    Presentation type：Oral presentation (general)  

    Venue：名古屋市   Country：Japan  

  • Auナノ粒子を複合化したナノ層状酸化物の光触媒活性

    北崎将士, 大瀧倫卓

    第1回九州若手セラミックフォーラム  2011.8 

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    Event date： 2011.8

    Venue：下関市   Country：Japan  

  • 拡散接合法による平面配列型酸化物熱電モジュールの試作

    富田健稔, 相馬岳, 大瀧倫卓

    第5回九州若手セラミックフォーラム  2011.8 

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    Event date： 2011.8

    Venue：下関市   Country：Japan  

  • 多元ドープしたZnOの熱伝導率と熱電特性

    岩野勇輝, 大瀧倫卓

    第4回九州若手セラミックフォーラム  2011.8 

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    Event date： 2011.8

    Venue：下関市   Country：Japan  

  • 秩序的なナノポーラス構造を有するバルク体の作製と熱伝導

    古庄真也, 大瀧倫卓

    第3回九州若手セラミックフォーラム  2011.8 

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    Event date： 2011.8

    Venue：下関市   Country：Japan  

  • 鉄系層状オキシフォスファイドの合成と電子物性

    吉田諭史, 大瀧倫卓

    第2回九州若手セラミックフォーラム  2011.8 

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    Event date： 2011.8

    Venue：下関市   Country：Japan  

  • セラミックハニカム型酸化物熱電発電モジュールの開発

    相馬岳, 西原智之, 大瀧倫卓

    第10回日本熱電学会学術講演会（TSJ2011）  2011.8 

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    Event date： 2011.8

    Venue：札幌市   Country：Japan  

  • 鉄系層状酸化物へのアニオンドープによるオキシフォスファイドの合成と電子物性

    吉田諭史, 大瀧倫卓

    第48回化学関連支部合同九州大会  2011.7 

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    Event date： 2011.7

    Venue：北九州市   Country：Japan  

  • Auナノ粒子を複合化したナノ層状酸化チタンの光触媒活性

    北崎将士, 大瀧倫卓

    第48回化学関連支部合同九州大会  2011.7 

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    Event date： 2011.7

    Venue：北九州市   Country：Japan  

  • Oxide Thermoelectric Materials for "Energy Harvesting" from Mid-to-High Temperature Waste Heat Invited International conference

    Michitaka Ohtaki

    The 11th Eurasia Conference on Chemical sciences (EuAsC2S-11)  2010.10 

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    Event date： 2010.10

    Presentation type：Oral presentation (general)  

    Country：Jordan  

  • かご状構造中にアルカリ金属原子を内包したβ-パイロクロア型酸化物の熱電特性

    宮石壮, 大瀧倫卓

    第7回日本熱電学会学術講演会  2010.8 

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    Event date： 2010.8

    Presentation type：Oral presentation (general)  

    Venue：東京都   Country：Japan  

  • 希土類金属イオンを共ドープしたアルミニウムドープ酸化亜鉛焼結体の熱電特性

    徳留弘優，石川和宏，竹内直哉，大瀧倫卓

    第7回日本熱電学会学術講演会  2010.8 

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    Event date： 2010.8

    Presentation type：Oral presentation (general)  

    Venue：東京都   Country：Japan  

  • ダブルペロブスカイト型酸化物Sr2-xLaxCoTiO6の結晶構造と熱電特性

    菅原徹，大瀧倫卓，黒崎健，牟田浩明，大石佑治，山中伸介

    第7回日本熱電学会学術講演会  2010.8 

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    Event date： 2010.8

    Presentation type：Oral presentation (general)  

    Venue：東京都   Country：Japan  

  • 2元素を同時ドープしたZnOの熱伝導率と熱電特性

    岩野勇輝, 大瀧倫卓

    第7回日本熱電学会学術講演会  2010.8 

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    Event date： 2010.8

    Presentation type：Oral presentation (general)  

    Venue：東京都   Country：Japan  

  • 2元素を共ドープしたZnOの熱伝導率と熱電特性

    岩野勇輝, 大瀧倫卓

    第47回化学関連支部合同九州大会  2010.7 

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    Event date： 2010.7

    Presentation type：Oral presentation (general)  

    Venue：北九州市   Country：Japan  

  • 電解析出法によるコバルト酸化物薄膜の合成

    伊勢田幸範, 大瀧倫卓

    第47回化学関連支部合同九州大会  2010.7 

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    Event date： 2010.7

    Presentation type：Oral presentation (general)  

    Venue：北九州市   Country：Japan  

  • かご状構造を持つβ-パイロクロア型酸化物の熱電特性

    宮石壮, 大瀧倫卓

    第47回化学関連支部合同九州大会  2010.7 

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    Event date： 2010.7

    Presentation type：Oral presentation (general)  

    Venue：北九州市   Country：Japan  

  • ナノポーラス酸化物における熱伝導率の特異的低減

    古庄真也, 大瀧倫卓

    第47回化学関連支部合同九州大会  2010.7 

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    Event date： 2010.7

    Presentation type：Oral presentation (general)  

    Venue：北九州市   Country：Japan  

  • Thermal and Electrical Properties of Oxide Thermoelectric Materials: Criteria and strategies for making ZT = 1 possible Invited International conference

    Michitaka Ohtaki

    Risoe DTU Seminar  2010.2 

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    Event date： 2010.2

    Presentation type：Oral presentation (general)  

    Country：Denmark  

  • Anomalous Reduction in the Thermal Conductivity of Perovskite-type Oxide on a Structural Phase Transition between the Perovskite and Brownmillerite Structures International conference

    S. Teraoka, T. Sugahara, M. Ohtaki

    The 11th Cross Straits Symposium on Materials, Energy and Environmental Sciences  2009.11 

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    Event date： 2009.11

    Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • Synthesis and Thermoelectric Properties of Nanoporous Al-doped ZnO International conference

    G. Yamamoto, M. Ohtaki

    The 11th Cross Straits Symposium on Materials, Energy and Environmental Sciences  2009.11 

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    Event date： 2009.11

    Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • Thermoelectric Properties of co-doped ZnO Oxides for Heat-to-Electricity Direct Conversion International conference

    K. Yamamoto, M. Ohtaki

    The 11th Cross Straits Symposium on Materials, Energy and Environmental Sciences  2009.11 

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    Event date： 2009.11

    Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • Molecular Assembly-assisted Synthesis and Photocatalytic Activity of Lamellar Sodium Tantalate International conference

    M. Mori, M. Ohtaki

    The 11th Cross Straits Symposium on Materials, Energy and Environmental Sciences  2009.11 

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    Event date： 2009.11

    Presentation type：Oral presentation (general)  

    Country：Korea, Republic of  

  • 酸化物熱電変換材料の開発戦略と新展開 Invited

    大瀧倫卓

    山口東京理科大学 第9回液晶研究所・第5回先進材料研究所合同シンポジウム  2009.3 

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    Event date： 2009.3

    Presentation type：Oral presentation (general)  

    Venue：山口東京理科大学   Country：Japan  

  • 酸化物熱電材料の研究開発状況 Invited

    大瀧倫卓

    日本熱電学会第3回熱電講習会－熱電変換の基礎と応用－  2008.8 

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    Event date： 2008.8

    Presentation type：Symposium, workshop panel (public)  

    Venue：早稲田大学大久保キャンパス   Country：Japan  

  • 分子集合体鋳型法によるナノ構造酸化物の合成と物性

    大瀧倫卓

    材料レオロジー研究会 第20回セミナー  2008.3 

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    Presentation type：Oral presentation (general)  

    Venue：九州大学   Country：Japan  

  • NaCo2O4層状酸化物熱電材料の粒界制御と熱電特性

    松尾優作, 大瀧倫卓

    第43回化学関連支部合同九州大会  2006.7 

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    Venue：北九州国際会議場   Country：Japan  

  • 自己集積した量子サイズ酸化物ナノ超格子の構造とナノ配向制御

    林遼, 大瀧倫卓

    第43回化学関連支部合同九州大会  2006.7 

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    Venue：北九州国際会議場   Country：Japan  

  • ダブルペロブスカイト型酸化物 Sr2(Fe,Mn)MoO6 の熱電特性

    菅原 徹, 大瀧倫卓

    第43回化学関連支部合同九州大会  2006.7 

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    Venue：北九州国際会議場   Country：Japan  

  • 二次元ナノ超構造酸化チタンの構造と光触媒特性

    西田達朗, 大瀧倫卓

    第43回化学関連支部合同九州大会  2006.7 

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    Venue：北九州国際会議場   Country：Japan  

  • 熱エネルギー高度利用のための環境調和型熱電変換材料の開発 Invited

    大瀧倫卓

    立命館大学学術フロンティア 研究成果シンポジウム  2007.2 

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    Presentation type：Oral presentation (general)  

    Venue：立命館大学   Country：Japan  

  • Self-Assembly Synthesis and Electromagnetic Properties of 2D Metal Oxide Superlattices International conference

    M. Ohtaki

    Post-MMC12 International Mini-Symposium in Yamaguchi  2007.9 

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    Presentation type：Oral presentation (general)  

    Country：Japan  

  • 酸化物熱電半導体の研究開発動向 Invited

    大瀧倫卓

    北九州学術研究都市地域知的クラスター創成事業(第II期) 招待講演会  2008.2 

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    Presentation type：Oral presentation (general)  

    Venue：北九州学術研究都市   Country：Japan  

  • セラミックハニカムを利用した高密度実装酸化物熱電モジュールの開発

    上中達也, 大瀧倫卓

    第43回化学関連支部合同九州大会  2006.7 

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    Venue：北九州国際会議場   Country：Japan  

▼display all

MISC

  • Recent Aspects of Oxide Thermoelectric Materials for Power Generation from Mid-to-high Temperature Heat Source

    Michitaka Ohtaki

    Journal of the Ceramic Society of Japan   2011.11

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    Language：English   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 熱-電気直接エネルギー変換のための酸化物熱電材料

    大瀧倫卓

    九州大卓グローバルCOEプログラム新炭素資源学ニューズレター   2010.4

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 熱電酸化物セラミックスのナノ構造制御と熱電特性

    大瀧倫卓

    電気学会誌   2008.5

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 熱エネルギーを電気に変えるセラミックス －新しい酸化物熱電変換材料の開発－

    大瀧倫卓

    ペトロテック   2007.9

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 新しい熱電変換材料としての金属酸化物 −層状コバルト酸化物を中心に−

    大瀧倫卓

    月刊EcoIndustry   2005.10

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • セラミックスの熱電的性質とその測定法

    大瀧倫卓

    セラミックス   2005.1

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • Platinum and Palladium Nanostructured Catalysts for Polymer Electrolyte Fuel Cells, and Direct Methanol Fuel Cells

    Nguyen Viet Long, Cao Minh Thi, Masayuki Nogami, Michitaka Ohtaki

    Journal of Nanoscience and Nanotechnology   2013.7

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    Language：English   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • Pt and Pd Based Catalysts with Novel Alloy and Core-Shell Nanostructures for Practical Applications in Next Fuel Cells: Patents and Highlights

    Nguyen Viet Long, Cao Minh Thi, Masayuki Nogami, Michitaka Ohtaki

    Recent Patents on Materials Science   2012.6

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    Language：English   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • Oxide Thermoelectric Materials for Heat-to-electricity Direct Energy Conversion

    Michitaka Ohtaki

    Kyushu Uniersity Global COE Program Novel Carbon Resources Sciences Newsletter   2010.5

    　More details

    Language：English   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

▼display all

Industrial property rights

Patent   Number of applications: 5   Number of registrations: 3
Utility model   Number of applications: 0   Number of registrations: 0
Design   Number of applications: 0   Number of registrations: 0
Trademark   Number of applications: 0   Number of registrations: 0

Professional Memberships

  • International Thermoelectric Society

  • The American Ceramic Society

  • The Electrochemical Society of Japan

  • Thermoelectrics Society of Japan

  • The Ceramic Society of Japan

  • Chemical Society of Japan

▼display all

Committee Memberships

  • Chairman   Domestic

    2023.4 - 2025.3   

  • 日本セラミックス協会九州支部   支部長   Domestic

    2023.4 - 2025.3   

  • Chairman   Domestic

    2022.7 - 2024.6   

  • 電気化学会   代議員（九州支部推薦）   Domestic

    2022.3 - 2024.3   

  • 日本セラミックス協会九州支部   副支部長   Domestic

    2021.4 - 2023.3   

  • Vice-chairman   Domestic

    2018.7 - 2022.6   

  • 日本セラミックス協会　分野横断型研究体「革新的熱利用・熱制御材料研究体」   代表世話人   Domestic

    2017.4 - 2025.3   

  • Steering committee member   Domestic

    2014.7 - 2018.6   

  • 日本熱電学会   研究会委員会委員長   Domestic

    2014.7 - 2018.6   

  • 電気化学会九州支部   幹事常議員   Domestic

    2014.4 - Present   

  • Steering committee member   Domestic

    2012.7 - 2014.6   

  • 日本熱電学会   表彰委員会委員長   Domestic

    2012.7 - 2014.6   

  • 日本セラミックス協会九州支部   幹事常議員   Domestic

    2008.4 - 2022.4   

  • Steering committee member   Domestic

    2008.4 - 2014.3   

  • 日本セラミックス協会   行事企画委員会委員   Domestic

    2008.4 - 2014.3   

  • Executive   Domestic

    2004.4 - Present   

  • 日本化学会   九州支部代議員   Domestic

    2002.4 - 2003.3   

  • 日本化学会   九州支部庶務幹事   Domestic

    2002.2 - 2003.2   

  • 日本セラミックス協会   生体関連材料部会 役員   Domestic

    2000.4 - Present   

  • 日本化学会   九州支部代議員   Domestic

    2000.4 - 2001.3   

  • 電気化学会   九州支部庶務幹事   Domestic

    1999.4 - 2001.3   

▼display all

Academic Activities

  • Track 1 Symposium 2 "Ceramics-Related Materials, Devices, and Processing for Heat-to-Electricity Direct Conversion and Thermal Energy Harnessing" Lead Organizer International contribution

    14th International Conference on Ceramic Materials and Components for Energy and Environmental Systems (CMCEE-14)  （ Budapest Hungary ） 2024.8

    　More details

    Type：Competition, symposium, etc. 

  • Symposium Lead Organizer International contribution

    The 48th International Conference and Expo on Advanced Ceramics and Composites (ICACC2024)  （ Daytona Beach, FL UnitedStatesofAmerica ） 2024.1 - 2024.2

    　More details

    Type：Competition, symposium, etc. 

  • 特定セッション25「熱エネルギーの利用と制御における材料革新Ⅳ〜熱エネルギー変換・熱制御・蓄熱・超伝熱・超断熱材料の新展開〜」オーガナイザ

    日本セラミックス協会第36回秋季シンポジウム  （ 京都工芸繊維大学 ） 2023.9

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    Type：Competition, symposium, etc. 

  • Symposium Lead Organizer International contribution

    The 47th International Conference and Expo on Advanced Ceramics and Composites (ICACC2023)  （ Daytona Beach, FL UnitedStatesofAmerica ） 2023.1

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    Type：Competition, symposium, etc. 

  • 特定セッション25「熱エネルギーの利用と制御における材料革新Ⅲ〜熱エネルギー変換・熱制御・蓄熱・超伝熱・超断熱材料の新展開〜」代表オーガナイザ

    日本セラミックス協会第35回秋季シンポジウム  （ 徳島大学 ） 2022.9

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    Type：Competition, symposium, etc. 

  • Symposium Lead Organizer International contribution

    The 46th International Conference and Expo on Advanced Ceramics and Composites (ICACC2022)  （ Daytona Beach, FL UnitedStatesofAmerica ） 2022.1

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    Type：Competition, symposium, etc. 

  • Symposium Lead Organizer International contribution

    The 14th Pacific Rim Conference of Ceramic Societies (PacRim14)  （ Vancouver Canada ） 2021.12

    　More details

    Type：Competition, symposium, etc. 

  • 特定セッション25「熱エネルギーの利用と制御における材料革新Ⅱ〜熱エネルギー変換・熱制御・蓄熱・超伝熱・超断熱材料の新展開〜」代表オーガナイザ

    日本セラミックス協会第34回秋季シンポジウム  （ 山梨大学→web開催 ） 2021.9

    　More details

    Type：Competition, symposium, etc. 

  • Symposium Lead Organizer International contribution

    The 45th International Conference and Expo on Advanced Ceramics and Composites (ICACC2021)  （ UnitedStatesofAmerica ） 2021.1 - 2021.2

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    Type：Competition, symposium, etc. 

  • 特定セッション10「エネルギー変換・貯蔵・輸送セラミックス材料の基礎と応用」セッション・オーガナイザ

    日本セラミックス協会第33回秋季シンポジウム  （ 北海道大学→web開催 ） 2020.9

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    Type：Competition, symposium, etc. 

  • Symposium Organizer International contribution

    The 44th International Conference and Expo on Advanced Ceramics and Composites (ICACC2020)  （ Daytona Beach, FL UnitedStatesofAmerica ） 2020.1

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    Type：Competition, symposium, etc. 

  • Symposium Lead Organizer International contribution

    The 13th Pacific Rim Conference of Ceramic Societies (PacRim13)  （ Japan ） 2019.10

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    Type：Competition, symposium, etc. 

  • 特定セッション02「熱エネルギーの利用と制御における材料革新〜熱エネルギー変換・伝熱・遮熱・蓄熱・熱制御材料の新展開〜」代表オーガナイザ

    日本セラミックス協会第31回秋季シンポジウム  （ 名古屋工業大学 ） 2018.9

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    Type：Competition, symposium, etc. 

  • Conference Co-organizer International contribution

    Materials Challenges in Alternative and Renewable Energy (MCARE) 2018  （ Vancouver Canada ） 2018.8

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    Type：Competition, symposium, etc. 

  • Symposium Lead Organizer International contribution

    The 12th International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE 2018)  （ Singapore Singapore ） 2018.7

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    Type：Competition, symposium, etc. 

  • 組織委員 International contribution

    （ 浜松市 ） 2017.11

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    Type：Competition, symposium, etc. 

  • 実行委員

    第58回電池討論会  （ 福岡国際会議場（福岡市） ） 2017.11

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    Type：Competition, symposium, etc. 

  • 代表オーガナイザ

    第14回日本熱電学会学術講演会（TSJ2017）公募シンポジウム「固体材料における熱伝導制御の学術フロンティア」  （ 大阪大学豊中キャンパス ） 2017.9

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    Type：Competition, symposium, etc. 

  • 実行委員

    2017年電気化学秋季大会  （ 長崎大学 ） 2017.9

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    Type：Competition, symposium, etc. 

    Number of participants：913

  • Symposium Organizer International contribution

    The 15th IUMRS International Conference on Advanced Materials (IUMRS-ICA2017)  （ Japan ） 2017.8 - 2017.9

    　More details

    Type：Competition, symposium, etc. 

    Number of participants：1,870

  • Symposium Organizer International contribution

    The 12th Pacific Rim Conference on Ceramic and Glass Technology (PacRim12)  （ Waikoloa, Hawaii UnitedStatesofAmerica ） 2017.5

    　More details

    Type：Competition, symposium, etc. 

  • 実行委員 International contribution

    （ 那覇市 ） 2017.2

    　More details

    Type：Competition, symposium, etc. 

  • 実行委員長

    第6回九州若手セラミックフォーラム(KYCF-6) ＆第46回窯業基礎九州懇話会  （ 太宰府市 ） 2016.8

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    Type：Competition, symposium, etc. 

    Number of participants：45

  • 組織委員 International contribution

    （ 京都市 ） 2016.1

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    Type：Competition, symposium, etc. 

    Number of participants：150

  • 実行委員長

    日本熱電学会第12回学術講演会（TSJ2015）  （ 九州大学筑紫キャンパス ） 2015.9

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    Type：Competition, symposium, etc. 

    Number of participants：250

  • Symposium Lead Organizer International contribution

    The 11th International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE-11)  （ Vancouver Canada ） 2015.6

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    （ 九州大学 ） 2015.2

    　More details

    Type：Competition, symposium, etc. 

  • Organizer International contribution

    The First Joint Symposium of Kyushu University and Yonsei University on Materials Science and Chemical Engineering (SKY-1)  （ Japan ） 2015.2

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    2014.12

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    Type：Competition, symposium, etc. 

  • International Advisory Board International contribution

    The 13th Eurasia Conference on Chemical Sciences (EuAsC2S-13)  （ Bangalore India ） 2014.12

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    2014.11

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    Type：Competition, symposium, etc. 

  • 実行委員

    日本セラミックス協会第27回秋季シンポジウム  （ 鹿児島大学 ） 2014.9

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    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    （ 福岡大学 ） 2014.8

    　More details

    Type：Competition, symposium, etc. 

  • セッション・オーガナイザ International contribution

    （ 福岡大学 ） 2014.8

    　More details

    Type：Competition, symposium, etc. 

  • 日本セラミックス協会学術論文誌（Journal of Ceramic Society of Japan）

    2010.4 - 2013.3

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    Type：Academic society, research group, etc. 

  • セッション・オーガナイザ International contribution

    （ 名古屋国際会議場 ） 2008.12

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    Type：Competition, symposium, etc. 

  • 実行委員

    日本セラミックス協会第21回秋季シンポジウム  （ 北九州国際会議場 ） 2008.9

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    Type：Competition, symposium, etc. 

  • 実行委員

    ナノ学会第6回大会  （ 九州大学医学部百年記念講堂 ） 2008.5

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    Type：Competition, symposium, etc. 

  • 実行委員

    第48回電池討論会  （ 福岡国際会議場 ） 2007.11

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    Type：Competition, symposium, etc. 

  • セッションオーガナイザ

    第16回日本MRS学術シンポジウム  （ 日本大学 ） 2005.12

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    Type：Competition, symposium, etc. 

  • セッションオーガナイザ

    第15回日本MRS学術シンポジウム  （ 日本大学 ） 2004.12

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    Type：Competition, symposium, etc. 

  • 日本熱電学会学術論文誌（Journal of Thermoelectrics Society of Japan）

    2004.4 - 2008.3

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    Type：Academic society, research group, etc. 

  • Correspondence Chairman International contribution

    IUMRS-ICAM2003 Symposium C-6: "Advanced Thermoelectric Materials for Environment-Friendly Energy Systems"  （ Japan ） 2003.10

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    Type：Competition, symposium, etc. 

  • 実行委員

    第43回電池討論会  （ 九州産業大学 ） 2002.11

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    Type：Competition, symposium, etc. 

▼display all

Research Projects

  • 共ドープによる固溶元素の安定化効果に基づく熱力学的に安定なバルクp型ZnOの創製

    Grant number：23K17958  2023 - 2025

    日本学術振興会  科学研究費助成事業  挑戦的研究（萌芽）

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 導電性ナノ粒子によりフォノン散乱と導電性を同時に増強した酸化物熱電材料の開発

    Grant number：22H01779  2022 - 2024

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 微小エネルギーを利用した革新的な環境発電技術の創出 「低熱伝導率材料を用いた熱電モジュールの開発」

    2020 - 2022

    戦略的創造研究推進事業 (文部科学省)

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    Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid)  Grant type：Contract research

  • 酸化物/窒化物へテロ界面を持つバルクナノコンポジット熱電変換材料の開発

    Grant number：19H02800  2019 - 2021

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 熱制御材料の開発

    2018.4 - 2018.11

    共同研究

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • 公益財団法人大倉和親記念財団 2018年度第49回研究助成金/窒化物シェルを拡散防止層とする超耐熱性ナノコンポジット酸化物熱電変換材料の開発

    2018

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    Grant type：Donation

  • 熱制御材料の開発

    2017.4 - 2018.3

    共同研究

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • 溶射法を利用した 熱電変換モジュールの研究開発

    2017.4 - 2018.3

    新エネルギー・産業技術総合開発機構 

    　 More details

    Authorship：Coinvestigator(s) 

    従来、バルク体で作製されてきた熱電変換素子について、表面コーティング技術の一種であり、低コスト化が実現可能な溶射法を用いた素子およびモジュールの高性能化を図り、熱源への設置および実用化を目指す。

  • 溶射法を利用した熱電変換モジュールの研究開発

    2017

    NEDO未利用熱エネルギーの革新的活用技術研究開発／熱電変換材料の技術シーズ発掘小規模研究開発

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    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 熱制御材料の開発

    2016.4 - 2017.3

    共同研究

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • 構造－電子相転移の併発による動的サーマルインシュレーション材料の開発

    Grant number：16K14392  2016 - 2018

    科学研究費助成事業  挑戦的萌芽研究

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 熱制御材料の開発

    2015.4 - 2016.3

    受託研究

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    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • バルクナノへテロ構造を有する酸化物熱電変換材料の開発

    Grant number：26289242  2014 - 2016

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 結晶構造中にかご状空間を有する「ラトリング」酸化物熱電材料の開発

    Grant number：25620152  2013 - 2015

    科学研究費助成事業  挑戦的萌芽研究

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 高効率酸化物熱電変換材料に関する研究

    2011.4 - 2012.3

    共同研究

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • OTE-POWER – Oxide thermoelectrics for effective power generation from waste heat International coauthorship

    2011.1 - 2014.12

    Danish Council for Independent Research, Technology and Production（デンマーク） 

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    Authorship：Coinvestigator(s) 

    廃熱エネルギー発電を目的とした酸化物熱電モジュールの開発

  • OTE-POWER – Oxide thermoelectrics for effective power generation from waste heat

    2011 - 2014

    Danish Council for Independent Research, Technology and Production

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    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 高効率酸化物熱電変換材料に関する研究

    2010.5 - 2011.3

    共同研究

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • 高性能熱電変換材料の開発

    2010.1 - 2010.9

    共同研究

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • 奨学寄付金

    2010

    　 More details

    Grant type：Donation

  • 知的クラスター創成事業「超高効率化を実現するナノ構造熱電発電モジュールの開発」

    2009.4 - 2012.3

    財団法人福岡県産業・科学技術振興財団 

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    Authorship：Coinvestigator(s) 

    超高効率化を実現するナノ構造熱電発電モジュールの開発

  • 超高効率化を実現するナノ構造熱電発電モジュールの開発

    2009 - 2011

    文部科学省 知的創造による地域産学官連携強化プログラム「知的クラスター創成事業」

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    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 奨学寄付金

    2009

    　 More details

    Grant type：Donation

  • 奨学寄付金

    2009

    　 More details

    Grant type：Donation

  • 奨学寄付金

    2009

    　 More details

    Grant type：Donation

  • 多元ドープによるバルクナノコンポジット構造ZnO系酸化物熱電材料の開発

    2008.7 - 2009.3

    科学技術振興機構 

    　 More details

    Authorship：Principal investigator 

    地域イノベーション創出総合支援事業 重点地域研究開発推進プログラム「シーズ発掘試験」

  • 新炭素資源学

    2008 - 2012

    研究拠点形成費補助金(グローバルＣＯＥ) (文部科学省）

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    Authorship：Coinvestigator(s)  Grant type：Contract research

  • ナノサイズ領域の独立閉気孔構造によるフォノン熱伝導の特異的低減

    Grant number：20656105  2008 - 2009

    科学研究費助成事業  萌芽研究

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • ナノサイズ領域の独立閉気孔構造によるフォノン熱伝導の特異的低減

    Grant number：20656105  2008 - 2009

    科学研究費助成事業  萌芽研究

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 多元ドープによるバルクナノコンポジット構造ZnO系酸化物熱電材料の開発

    2008

    科学技術振興機構　地域イノベーション創出総合支援事業 重点地域研究開発推進プログラム「シーズ発掘試験」

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    Authorship：Principal investigator  Grant type：Contract research

  • セラミックハニカムを用いた高密度実装酸化物熱電発電モジュールの開発

    2006.10 - 2007.2

    科学技術振興機構 

    　 More details

    Authorship：Principal investigator 

    地域イノベーション創出総合支援事業 重点地域研究開発推進プログラム「シーズ発掘試験」

  • 金属酸化物の熱電物性における酸素イオン副格子の構造とダイナミクス

    Grant number：18360318  2006 - 2008

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • セラミックハニカムを用いた高密度実装酸化物熱電発電モジュールの開発

    2006

    科学技術振興機構　地域イノベーション創出総合支援事業 重点地域研究開発推進プログラム「シーズ発掘試験」

    　 More details

    Authorship：Principal investigator  Grant type：Contract research

  • 精緻な階層的ナノ構造を持つ酸化物半導体超構造の合成と物性

    Grant number：16651069  2004 - 2005

    科学研究費助成事業  萌芽研究

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 500℃級排熱回収用熱電発電素子の開発

    2003.2 - 2005.9

    独立行政法人　科学技術振興機構 

    　 More details

    Authorship：Principal investigator 

    科学技術振興機構　重点地域研究開発促進事業
    研究成果活用プラザ福岡　育成研究　大瀧プロジェクト
    「500℃級排熱回収用熱電発電素子の開発」

  • ナノブロックインテグレーションによる層状酸化物熱電材料の創製

    2002.11 - 2008.3

    独立行政法人　科学技術振興機構 

    　 More details

    Authorship：Coinvestigator(s) 

    科学技術振興機構　戦略的創造研究推進事業（CREST）
    「エネルギーの高度利用に向けたナノ構造材料・システムの創製」研究領域（藤嶋 昭　領域代表）
    「ナノブロックインテグレーションによる層状酸化物熱電材料の創製」
    九大グループリーダー

  • ナノブロックインテグレーションによる層状酸化物熱電材料の創製

    2002 - 2007

    科学技術振興機構　戦略的創造研究推進事業（CREST）

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 500℃級排熱回収用熱電発電素子の開発

    2002 - 2005

    科学技術振興機構　重点地域研究開発促進事業

    　 More details

    Authorship：Principal investigator  Grant type：Contract research

  • 次世代化学機能デバイスの基盤技術としてのセラミックスウェットプロセッシング −ナノレベルからの構造と機能の制御−

    2002 - 2004

    九州大学教育研究プログラム・研究拠点形成プロジェクト（P&P）（Aタイプ）

    　 More details

    Authorship：Coinvestigator(s)  Grant type：On-campus funds, funds, etc.

  • 階層的ナノ構造の時空間制御による無機ナノフォトニクス材料の創製

    2002 - 2003

    九州大学教育研究プログラム・研究拠点形成プロジェクト（P&P）（B-2タイプ）

    　 More details

    Authorship：Principal investigator  Grant type：On-campus funds, funds, etc.

  • 次世代のソフトエネルギーに関する最先端教育プログラムの構築

    2002 - 2003

    九州大学教育研究プログラム・研究拠点形成プロジェクト（P&P）（Cタイプ）

    　 More details

    Authorship：Coinvestigator(s)  Grant type：On-campus funds, funds, etc.

  • 導電性酸化物における高エントロピー伝導と熱電変換材料への応用

    Grant number：13650740  2001 - 2003

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 二分子膜−酸化物層状複合体の低温結晶化による二次元量子閉じ込め構造半導体の創製

    Grant number：11750718  1999 - 2000

    科学研究費助成事業  奨励研究(A)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 分子集合体テンプレートの可溶化機能を利用した量子サイズ酸化物複合体の創製

    Grant number：09750753  1997 - 1998

    科学研究費助成事業  奨励研究(A)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 2相から成る高速酸素イオン導電性固体電解質の合成と評価

    Grant number：09215229  1997

    科学研究費助成事業  重点領域研究

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 分子集合体を鋳型とした量子ヘテロ構造半導体の合成

    Grant number：08750957  1996

    科学研究費助成事業  奨励研究(A)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 金属酸化物半導体へのアニオンドーピング

    Grant number：07750755  1995

    科学研究費助成事業  奨励研究(A)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 常温液相プロセスを利用した金属および半導体超微粒子の精密合成

    Grant number：06750850  1994

    科学研究費助成事業  奨励研究(A)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 無機超微粒子と有機分子を複合分散したミクロ多孔質半導体材料の合成と光機能化

    1993

    科学研究費助成事業  奨励研究(A)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

▼display all

Class subject

  • 総合理工学要論

    2024.10 - 2024.12   Fall quarter

  • 材料機能設計基盤特論 Ⅱ e

    2024.6 - 2024.8   Summer quarter

  • 材料情報学特論Ⅱ i

    2024.6 - 2024.8   Summer quarter

  • 工学概論

    2024.4 - 2024.9   First semester

  • 専門英語

    2024.4 - 2024.9   First semester

  • 融合工学概論Ⅰ

    2024.4 - 2024.9   First semester

  • 総合理工学要論

    2024.4 - 2024.6   Spring quarter

  • 先端固体物性 i

    2024.4 - 2024.6   Spring quarter

  • 課題協学科目

    2023.10 - 2024.3   Second semester

  • 課題協学科目

    2023.10 - 2024.3   Second semester

  • 基礎化学結合論Ⅱ

    2023.6 - 2023.8   Summer quarter

  • 総合理工学修士実験

    2023.4 - 2024.3   Full year

  • エネルギー物質工学演習

    2023.4 - 2024.3   Full year

  • 量子プロセス理工学博士論文演習

    2023.4 - 2024.3   Full year

  • 総合理工学修士演習

    2023.4 - 2024.3   Full year

  • 融合工学概論Ⅰ

    2023.4 - 2023.9   First semester

  • 専門英語

    2023.4 - 2023.9   First semester

  • 専門英語

    2022.10 - 2023.3   Second semester

  • 専門英語

    2022.10 - 2023.3   Second semester

  • エネルギー科学特別講義Ⅵ（北野　政明）

    2022.4 - 2023.3   Full year

  • Exercises on Functional Materials Engineering

    2022.4 - 2023.3   Full year

  • 総合理工学修士演習

    2022.4 - 2023.3   Full year

  • 総合理工学修士実験

    2022.4 - 2023.3   Full year

  • エネルギー物質工学演習

    2022.4 - 2023.3   Full year

  • 機能物性工学演習

    2021.10 - 2022.3   Second semester

  • エネルギー物質工学演習

    2021.10 - 2022.3   Second semester

  • エネルギー変換材料学 d

    2021.10 - 2021.12   Fall quarter

  • 材料機能設計基盤特論 Ⅱ e

    2021.6 - 2021.8   Summer quarter

  • エネルギー材料科学

    2021.6 - 2021.8   Summer quarter

  • 材料情報学特論Ⅱ i

    2021.6 - 2021.8   Summer quarter

  • Exercise for Doctoral Thesis

    2021.4 - 2022.3   Full year

  • 機能物性工学特別講究

    2021.4 - 2022.3   Full year

  • エネルギー科学特別講義Ⅵ

    2021.4 - 2022.3   Full year

  • エネルギー科学展望

    2021.4 - 2021.9   First semester

  • エネルギー物質工学実験I

    2021.4 - 2021.9   First semester

  • 先端固体物性 i

    2021.4 - 2021.6   Spring quarter

  • 量子プロセス理工学概論Ⅳ

    2020.12 - 2021.2   Winter quarter

  • エネルギー物質工学演習

    2020.10 - 2021.3   Second semester

  • 機能物性工学演習

    2020.10 - 2021.3   Second semester

  • 量子プロセス理工学概論III

    2020.10 - 2020.12   Fall quarter

  • エネルギー材料科学

    2020.6 - 2020.8   Summer quarter

  • Exercise for Doctoral Thesis

    2020.4 - 2021.3   Full year

  • 機能物性工学基礎

    2020.4 - 2020.9   First semester

  • エネルギー物質工学実験I

    2020.4 - 2020.9   First semester

  • エネルギー科学展望

    2020.4 - 2020.9   First semester

  • 機能物性工学演習

    2019.10 - 2020.3   Second semester

  • 基礎化学熱力学

    2019.10 - 2020.3   Second semester

  • エネルギー物質工学演習

    2019.10 - 2020.3   Second semester

  • *Fundamentals of Applied Sci. for Electronics & Materials II

    2019.10 - 2019.12   Fall quarter

  • エネルギー材料科学

    2019.6 - 2019.8   Summer quarter

  • Exercise for Doctoral Thesis

    2019.4 - 2020.3   Full year

  • エネルギー科学展望

    2019.4 - 2019.9   First semester

  • エネルギー物質工学実験I

    2019.4 - 2019.9   First semester

  • エネルギー物質工学演習

    2018.10 - 2019.3   Second semester

  • 機能物性工学演習

    2018.10 - 2019.3   Second semester

  • Fundamentals of Applied Science for Electronics and Materials II

    2018.10 - 2019.3   Second semester

  • 量子プロセス理工学概論Ⅲ

    2018.10 - 2019.3   Second semester

  • エネルギー材料科学

    2018.6 - 2018.8   Summer quarter

  • Exercise for Doctoral Thesis

    2018.4 - 2019.3   Full year

  • 機能物性工学基礎

    2018.4 - 2018.9   First semester

  • エネルギー物質工学実験I

    2018.4 - 2018.9   First semester

  • エネルギー科学展望

    2018.4 - 2018.9   First semester

  • Fundamentals of Applied Science for Electronics and Materials II

    2017.10 - 2018.3   Second semester

  • 環境システム学(I)

    2017.10 - 2018.3   Second semester

  • 量子プロセス理工学概論Ⅲ

    2017.10 - 2018.3   Second semester

  • エネルギー物質工学演習

    2017.10 - 2018.3   Second semester

  • 機能物性工学演習

    2017.10 - 2018.3   Second semester

  • エネルギー材料科学

    2017.4 - 2017.9   First semester

  • エネルギー科学展望

    2017.4 - 2017.9   First semester

  • エネルギー物質工学実験I

    2017.4 - 2017.9   First semester

  • エネルギー物質工学演習

    2016.10 - 2017.3   Second semester

  • 量子プロセス理工学基礎第二

    2016.10 - 2017.3   Second semester

  • 量子プロセス理工学概論Ⅲ

    2016.10 - 2017.3   Second semester

  • 応用物質工学

    2016.10 - 2017.3   Second semester

  • 基礎化学結合論

    2016.4 - 2016.9   First semester

  • エネルギー材料科学

    2016.4 - 2016.9   First semester

  • エネルギー物質工学実験I

    2016.4 - 2016.9   First semester

  • 機能物性工学基礎

    2016.4 - 2016.9   First semester

  • エネルギー物質工学演習

    2015.10 - 2016.3   Second semester

  • 量子プロセス理工学基礎第二

    2015.10 - 2016.3   Second semester

  • 量子プロセス理工学概論Ⅲ

    2015.10 - 2016.3   Second semester

  • 応用物質工学

    2015.10 - 2016.3   Second semester

  • 基幹物理学ⅠA

    2015.4 - 2015.9   First semester

  • エネルギー材料科学

    2015.4 - 2015.9   First semester

  • エネルギー物質工学実験I

    2015.4 - 2015.9   First semester

  • エネルギー物質工学演習

    2014.10 - 2015.3   Second semester

  • 量子プロセス理工学基礎第二

    2014.10 - 2015.3   Second semester

  • 量子プロセス理工学概論Ⅲ

    2014.10 - 2015.3   Second semester

  • 応用物質工学

    2014.10 - 2015.3   Second semester

  • 次世代の低炭素エネルギー

    2014.10 - 2015.3   Second semester

  • 基幹物理学ⅠA

    2014.4 - 2014.9   First semester

  • エネルギー物質工学実験I

    2014.4 - 2014.9   First semester

  • 無機光機能材料工学基礎

    2014.4 - 2014.9   First semester

  • 熱と波動論基礎

    2014.4 - 2014.9   First semester

  • 熱と波動論基礎

    2013.10 - 2014.3   Second semester

  • 応用物質工学

    2013.10 - 2014.3   Second semester

  • 次世代の低炭素エネルギー

    2013.10 - 2014.3   Second semester

  • エネルギー物質工学演習

    2013.10 - 2014.3   Second semester

  • 熱と波動論基礎

    2013.4 - 2013.9   First semester

  • Instrumental Analysis for Materials

    2013.4 - 2013.9   First semester

  • 材料機器分析学

    2013.4 - 2013.9   First semester

  • エネルギー物質工学実験I

    2013.4 - 2013.9   First semester

  • 熱と波動論基礎

    2012.10 - 2013.3   Second semester

  • 応用物質工学

    2012.10 - 2013.3   Second semester

  • 次世代の低炭素エネルギー

    2012.10 - 2013.3   Second semester

  • エネルギー物質工学演習

    2012.10 - 2013.3   Second semester

  • 熱と波動論基礎

    2012.4 - 2012.9   First semester

  • 材料機器分析学

    2012.4 - 2012.9   First semester

  • エネルギー物質工学実験I

    2012.4 - 2012.9   First semester

  • エネルギー科学展望

    2012.4 - 2012.9   First semester

  • 熱と波動論基礎

    2011.10 - 2012.3   Second semester

  • 次世代の低炭素エネルギー

    2011.10 - 2012.3   Second semester

  • エネルギー物質工学演習

    2011.10 - 2012.3   Second semester

  • 表面理論科学

    2011.10 - 2012.3   Second semester

  • エネルギー科学展望

    2011.4 - 2011.9   First semester

  • 材料機器分析学

    2011.4 - 2011.9   First semester

  • エネルギー物質工学実験I

    2011.4 - 2011.9   First semester

  • 熱と波動論基礎

    2011.4 - 2011.9   First semester

  • 表面理論科学

    2010.10 - 2011.3   Second semester

  • 次世代の低炭素エネルギー

    2010.10 - 2011.3   Second semester

  • エネルギー物質工学演習

    2010.10 - 2011.3   Second semester

  • 熱と波動論基礎

    2010.10 - 2011.3   Second semester

  • 材料機器分析学

    2010.4 - 2010.9   First semester

  • 熱と波動論基礎

    2010.4 - 2010.9   First semester

  • エネルギー物質工学実験I

    2010.4 - 2010.9   First semester

  • エネルギー物質工学演習

    2009.10 - 2010.3   Second semester

  • 熱と波動論基礎

    2009.10 - 2010.3   Second semester

  • 次世代のソフトエネルギー

    2009.10 - 2010.3   Second semester

  • 材料機器分析学

    2009.4 - 2009.9   First semester

  • 熱と波動論基礎

    2009.4 - 2009.9   First semester

  • エネルギー物質工学実験I

    2009.4 - 2009.9   First semester

  • 次世代のソフトエネルギー

    2008.10 - 2009.3   Second semester

  • 熱と波動論基礎

    2008.10 - 2009.3   Second semester

  • エネルギー物質工学演習

    2008.10 - 2009.3   Second semester

  • 表面理論科学

    2008.10 - 2009.3   Second semester

  • 機器分析学

    2008.4 - 2008.9   First semester

  • 熱と波動論基礎

    2008.4 - 2008.9   First semester

  • エネルギー物質工学実験I

    2008.4 - 2008.9   First semester

  • 次世代のソフトエネルギー

    2007.10 - 2008.3   Second semester

  • エネルギー物質工学演習

    2007.10 - 2008.3   Second semester

  • 熱と波動論基礎

    2007.10 - 2008.3   Second semester

  • 熱と波動論基礎

    2007.10 - 2008.3   Second semester

  • 熱と波動論基礎

    2007.4 - 2007.9   First semester

  • 機器分析学

    2007.4 - 2007.9   First semester

  • エネルギー物質工学実験I

    2007.4 - 2007.9   First semester

  • 熱と波動論基礎

    2006.10 - 2007.3   Second semester

  • 表面理論科学

    2006.10 - 2007.3   Second semester

  • エネルギー物質工学演習

    2006.10 - 2007.3   Second semester

  • 熱と波動論基礎

    2006.4 - 2006.9   First semester

  • 機器分析学

    2006.4 - 2006.9   First semester

  • エネルギー物質工学実験I

    2006.4 - 2006.9   First semester

  • 熱と波動論基礎

    2005.10 - 2006.3   Second semester

  • 表面理論科学

    2005.10 - 2006.3   Second semester

  • エネルギー物質工学演習

    2005.10 - 2006.3   Second semester

  • 熱と波動論基礎

    2005.4 - 2005.9   First semester

  • エネルギー物質工学実験I

    2005.4 - 2005.9   First semester

  • 機器分析学

    2005.4 - 2005.9   First semester

  • 熱と波動論基礎

    2004.10 - 2005.3   Second semester

  • エネルギー物質工学演習

    2004.10 - 2005.3   Second semester

  • 機器分析学

    2004.4 - 2004.9   First semester

  • エネルギー物質工学実験I

    2004.4 - 2004.9   First semester

  • エネルギー科学展望

    2004.4 - 2004.9   First semester

  • 表面理論科学

    2003.10 - 2004.3   Second semester

  • 量子物性論

    2003.4 - 2003.9   First semester

▼display all

Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.

  • 2015  岡山大学  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：1週間

  • 2004  筑波大学  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：1週間

  • 2001  東京工業大学  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：1週間

  • 1996  福岡工業短期大学  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：通年

  • 1995  福岡工業短期大学  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：通年

Other educational activity and Special note

  • 2014  Class Teacher 

  • 2013  Class Teacher 

  • 2012  Class Teacher 

  • 2011  Class Teacher 

Outline of Social Contribution and International Cooperation activities

  • 平成7〜8年度　福岡工業短期大学　非常勤講師
    平成13年度　東京工業大学　非常勤講師
    平成15年度　九州大学総合理工学府公開講座「環境調和型エネルギーの開発−核融合からソフトエネルギーまで−」講師
    　講演題目「熱電変換デバイスによる温度差発電と未利用廃熱エネルギー回収」
    平成15年度　九州大学公開講座先端領域講座「未来を拓くナノテクノロジー」講師
    　講演題目「ナノ物質と無機ナノ超構造」
    平成16年度 筑波大学 非常勤講師
    平成22年度　九州大学総合理工学府公開講座「グリーンエネルギー技術の最前線」講師
    　講演題目「廃熱のエネルギーを電気に変える〜熱電発電の現状と可能性〜」

Social Activities

  • 出前講義「お湯でモーターが回る！LEDが点く！ −九州大学工学部と熱電変換の紹介−」

    西南学院高等学校  2023.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • ニューセラミックス懇話会第251回研究会・センシング技術応用研究会第23回研究例会合同例会

    センシング技術応用研究会  大阪産業創造館  2023.4

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    Audience： General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Seminar, workshop

  • 出前講義「入ってみないとわからない、高校と大学の本当の違い ~後悔しない理工系進路選択のために~」

    佐賀県立鳥栖高等学校  2022.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「お湯でモーターが回る！LEDが点く！ −熱電変換の紹介と九州大学の挑戦−」

    宮崎県立延岡高等学校  2021.12

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 情熱・先端 Mission-E エコロジープラントプロジェクト 2021年度審査委員長 主催：日鉄エンジニアリング株式会社、株式会社リバネス

    2021

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    情熱・先端 Mission-E エコロジープラントプロジェクト 2021年度審査委員長
    主催：日鉄エンジニアリング株式会社、株式会社リバネス

  • 出前講義「お湯でモーターが回る！LEDが点く！ −熱電変換の紹介と九州大学の挑戦−」

    宮崎県立妻高等学校  2020.11

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「お茶で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    熊本県立玉名高等学校  2020.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    熊本県立済々黌高等学校  2019.11

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    福岡県立門司中学校・高等学校  2019.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 糸島市立二丈中学校「未来のいちしま学チャレンジ教室」体温で扇風機がまわる −九州大学のチャレンジ：熱を電気に変える酸化物−」

    糸島市立二丈中学校  2019.9

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    熊本県立八代高等学校  2018.9

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 世界一行きたい科学広場inふくおか2018

    主催：世界一行きたい科学広場inふくおか2018実行委員会 共催：福岡大学、NPO法人ガリレオ工房  福岡国際センター  2018.8

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    Audience： General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 情熱・先端 Mission-E エコロジープラントプロジェクト 2018年度審査委員長 主催：新日鉄住金エンジニアリング株式会社、株式会社リバネス

    2018

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    情熱・先端 Mission-E エコロジープラントプロジェクト 2018年度審査委員長
    主催：新日鉄住金エンジニアリング株式会社、株式会社リバネス

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    長崎県立西陵高等学校  2017.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    福岡県立八幡高等学校  2017.7

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    福岡県立嘉穂高等学校  2017.6

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 情熱・先端 Mission-E エコロジープラントプロジェクト 2017年度審査委員長 主催：新日鉄住金エンジニアリング株式会社、株式会社リバネス

    2017

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    情熱・先端 Mission-E エコロジープラントプロジェクト 2017年度審査委員長
    主催：新日鉄住金エンジニアリング株式会社、株式会社リバネス

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    佐賀県立佐賀西高等学校  2016.7

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 情熱・先端 Mission-E エコロジープラントプロジェクト 2016年度審査委員長 主催：新日鉄住金エンジニアリング株式会社、株式会社リバネス

    2016

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    情熱・先端 Mission-E エコロジープラントプロジェクト 2016年度審査委員長
    主催：新日鉄住金エンジニアリング株式会社、株式会社リバネス

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    山口県立下関西高等学校  2015.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    大分県立臼杵高等学校  2013.7

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    佐賀県立佐賀西高等学校  2012.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    大分県立日田高等学校  2011.9

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    宮崎県立宮崎北高等学校  2010.10

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 平成22年度九州大学総合理工学府公開講座「グリーンエネルギー技術の最前線」講師

    九州大学総合理工学府  九州大学総合理工学府  2010.8

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    Audience： General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Lecture

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    福岡県立新宮高等学校  2010.7

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • ときめきサイエンス「からだのねつででんきをつくろう！」

    春日市立春日野小学校  2010.2

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    熊本県立八代高等学校  2008.6

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    熊本県立人吉高等学校  2007.9

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • ナノテクノロジー熱電素子実用化研究会

    (財）北九州産業学術推進機構（FAIS） (独)科学技術振興機構　研究成果活用プラザ福岡 (株)フジコー 九州大学 九州工業大学  (株)フジコー 技術開発センター  2006.8

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    Audience： General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Seminar, workshop

  • 地域発先端テクノフェア2005

    科学技術振興機構  東京ビッグサイト  2005.11

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    Audience： General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Other

  • 出前講義「体温で扇風機がまわる −熱電変換のしくみと新エネルギー材料−」

    山口県立徳山高等学校  2005.11

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    Audience： Infants,　Schoolchildren,　Junior students,　High school students

    Type：Seminar, workshop

  • 産学官連携研究開発特別助成事業 熱電変換材料の理論的研究開発手法に関する技術指導

    通商産業省  大光炉材株式会社  2001.10

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    Audience： General,　Scientific,　Company,　Civic organization,　Governmental agency

    Type：Research consultation

▼display all

Media Coverage

  • 熱電変換素子　n型の変換効率向上　九州大学 Newspaper, magazine

    化学工業日報  2008.8

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    熱電変換素子　n型の変換効率向上　九州大学

Acceptance of Foreign Researchers, etc.

  • Mahidol University

    Acceptance period： 2016.6 - 2016.8   （Period）：1 month or more

    Nationality：Thailand

    Business entity：Foreign governments, foreign research institutes, international organizations

  • 九州大学

    Acceptance period： 2010.11 - 2013.3   （Period）：1 month or more

    Nationality：Viet Nam

    Business entity：Ministry of education

  • 九州大学

    Acceptance period： 2006.10 - 2008.3   （Period）：1 month or more

    Nationality：Viet Nam

    Business entity：Science and Technology Agency