電解合成法による超微粒子導電性酸化亜鉛の作製
高木健、黒澤慶子、Hadi Razavi、助永壮平、齊藤敬高、金子賢治、中島邦彦

Co/Pd 内包カーボンナノファイバーの微構造解析
柳本翼、Hadi Razavi、金子賢治、林靖彦、Bongyong Jang、徳永智春

ナノ粒子結合界面の構造制御による燃料電池の高性能化

電子顕微鏡技術の習得および普及をめざした教育実践

3次元トモグラフィＴＥＭを用いたナノ複合微粒子の直接観察

Language：Japanese  

Language：Japanese  

DOI： 10.2355/tetsutohagane.101.315

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

Preparation and nanostructural characterization of hybridized platinum/phthalocyanine nanocomposites
K. Kaneko, K. Furuya, T. Onodera, H. Kasai, Y. Yaguchi, H. Oikawa, Y. Nomura, H. Harada, T. Ishihara, A. B. Hungria, J.-C. Hernandez-Garrido and P. A. Midgley
Journal of Electron Microscopy
58(5) (2009) 289–294

DOI： 10.1093/jmicro/dfp027

Other Link： http://dx.doi.org/10.1093/jmicro/dfp027

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

Fabrication and Characterization of TiN-Ag Nano-Dice
K. Kitawaki, K. Kaneko, K. Inoke, J. C. Hernandez, P. A. Midgley, H. Okuyama, M. Uda and Y. Sakka
Micron
Vol. 40 (2009) pp.308-312

Other Link： http://dx.doi.org/10.1016/j.micron.2008.11.004

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

Microstructure and Mechanical Properties of Aluminum-fullerene Composite Fabricated by High Pressure Torsion
T. Tokunaga, K. Kaneko, K. Sato and Z. Horita
Scripta Materialia
Vol 58 No 9 (2008) pp. 735-738

Other Link： http://dx.doi.org/10.1016/j.scriptamat.2007.12.010

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

TEM characterization of Ge precipitates in an Al-1.6 at.% Ge alloy
K. Kaneko K. Inoke K. Sato Z. Horita I. Arslan P. A. Midgley
Ultramicroscopy
Vol.108 No.3 (2008) pp.210-220

Other Link： http://dx.doi.org/10.1016/j.ultramic.2007.04.020

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

Characterization of precipitates by three-dimensional electron tomography, K. Kaneko, K. Sato, Z Horita and K. Inoke, PRICM-6, Material Science Forum, Vol. 561-565 (PART 3), (2007) pp. 2009-2012

Language：English  

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

Structural and morphological characterization of cerium oxide nanocrystals prepared by hydrothermal synthesis
K. Kaneko K. Inoke B. Freitag A. B. Hungria P. A. Midgley T. W. Hansen J. Zhang S. Ohara and T. Adschiri
Nano Letters
Vol.7 2(2007)pp.421-425.

Other Link： http://dx.doi.org/10.1021/nl062677b

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

Other Link： http://dx.doi.org/10.1016/j.stam.2006.06.006

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

Severe local strain and the plastic deformation of Guinier-Preston zones in the Al-Ag system revealed by 3D electron tomography
K. Inoke K. Kaneko M. Weyland P. A. Midgley K. Higashida and Z. Horita
Acta Materialia
Vol.54, No.11 (2006) pp.2957-2963.

Other Link： http://dx.doi.org/10.1016/j.actamat.2006.02.029

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

Characterization of TiO2-Ag nanocomposite powders prepared by spray pyrolysis method using three-dimensional electron tomography
K. Kaneko W.-J. Moon K. Inoke Z. Horita S. Ohara T. Adschiri H. Abe and M. Naito
Material Science and Engineering A
Vol.403 1-2(2005)pp.30-36.

DOI： 10.1016/j.msea.2005.05.056

Other Link： http://dx.doi.org/10.1016/j.msea.2005.05.056

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

Formation of wedge-shaped carbon film by chemical vapor deposition method and observation using transmission electron microscopy
K. Kaneko R. Nagayama K. Inoke W.-J. Moon Z. Horita Y. Hayashi T. Tokunaga
Scripta Materialia
Vol.52 12(2005)pp.1205-1209.

DOI： 10.1016/j.scriptamat.2005.03.007

Other Link： http://dx.doi.org/10.1016/j.scriptamat.2005.03.007

Language：English  

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

Characterization of carbides at different boundaries of 9Cr-steel
K. Kaneko S. Matsumura A. Sadakata K. Fujita W. -J. Moon S. Ozaki N. Nishimura and Y. Tomokiyo
Material Science and Engineering A
Vol.374 1-2(2004)pp.82-89.

DOI： 10.1016/j.msea.2003.12.065

Other Link： http://dx.doi.org/10.1016/j.msea.2003.12.065

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

Quantitative electron microscopy of FePt nano-crystallites in amorphous Al2O3 matrix
K. Kaneko S. Matsumura K. Ikematsu Y. Kato Y. Tomokiyo M. Watanabe and T. Masumoto
Scripta Materialia
Vol.48 7(2003)pp.915-920.

DOI： 10.1016/S1359-6462(02)00627-9

Other Link： http://dx.doi.org/10.1016/S1359-6462(02)00627-9

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

Nanostructural and nanoelemental analysis of metastable M3C-type carbides with alloy-rich layer in heat resistant 2Cr-steel
K. Kaneko K. Fujita A. Sadakata Y. Tomokiyo and S. Matsumura
Scripta Materialia
Vol.48 6(2003)pp.761-765.

DOI： 10.1016/S1359-6462(02)00534-1

Other Link： http://dx.doi.org/10.1016/S1359-6462(02)00534-1

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

Precipitation of MgOnAl2O3 in Mg-doped a-Al2O3 under Electron Irradiation
K. Kaneko T. Kato M. Kitayama and Y. Tomokiyo
Journal of American Ceramic Society
Vol.86 1(2003)pp.161-168.

Other Link： http://dx.doi.org/10.1111/j.1151-2916.2003.tb03295.x

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

TEM studies of reaction-bonded Si3N4/SiC composites
K. Kaneko and N. Kondo
Grain Boundary Engineering in Ceramics
Vol.118 (2001) pp.391-397

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

Analytical characterization of both pre- and post-deformed Al-doped sintered beta-SiC
K. Kaneko S. Honda T. Saitoh T. Nagano and S. Tsurekawa
Material Science Engineering A
Vol.285 1-2(2000)pp.136-143.

Other Link： http://dx.doi.org/10.1016/S0921-5093(00)00638-9

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

HRTEM and ELNES Analysis of Polycarbosilane-derived Si-C-O bulk ceramics
K. Kaneko and K. Kakimoto
Journal of Non-Crystalline Solids
Vol.270 1-3(2000)pp.181-190.

Other Link： http://dx.doi.org/10.1016/S0022-3093(00)00011-9

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

Determination of the chemical width of grain boundaries of boron- and carbon-doped hot-pressed beta-SiC by HAADF imaging and ELNES line-profile
K. Kaneko M. Kawasaki T. Nagano N. Tamari and S. Tsurekawa
Acta Materialia
Vol.48 4(2000)pp.903-910.

Other Link： http://dx.doi.org/10.1016/S1359-6454(99)00393-6

Language：English  

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

Chemical bonding of oxygen in intergranular amorphous layers of high-purity beta-SiC ceramics
K. Kaneko M. Yoshiya I. Tanaka and S. Tsurekawa
Acta Materialia
Vol.47 4(1999)pp.1281-1287.

Other Link： http://dx.doi.org/10.1016/S1359-6454(98)00423-6

Language：English  

Other Link： http://dx.doi.org/10.1080/014186198253994

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

Six-fold coordinated Si at grain boundaries of sintered a-Al2O3
K. Kaneko I. Tanaka and M. Yoshiya
Applied Physics Letters
Vol.72 No.2 (1998) pp.191-193

Other Link： http://dx.doi.org/10.1063/1.120681

Language：English  

Language：English  

Other Link： http://dx.doi.org/10.1080/01418619708223743

Language：English  

Language：English  

Language：English  

Other Link： http://dx.doi.org/10.1016/0022-0248(94)90366-2

Language：English  

Language：English  

DOI： 10.1002/advs.202405864

Web of Science

PubMed

Publisher：Scripta Materialia  

It is one of the most effective methods to manipulate the atomic-scale structures of carbides formed by interphase precipitation to enhance the strengths of the microalloyed steel. In this study, conventional TEM, STEM-EDS, and HR-STEM were carried out to understand the origin of fine carbide precipitation in V-Nb multiple microalloyed ferritic steels. TEM characterizations showed that the multiple additions of V and Nb resulted in B1 structured alloy carbides with (V,Nb)C-cores and VC-shells, resulting in denser carbide precipitation compared to single additions of these elements. Thermo-Calc calculations and TEM results suggest that the precipitation kinetics of the (V,Nb)C-cores depends on the balance between its driving force and the misfit strain with the surrounding matrix, while that of the VC-shells is achieved by aging precipitation.

DOI： 10.1016/j.scriptamat.2024.116169

Web of Science

Scopus

Language：Japanese   Publisher：The Iron and Steel Institute of Japan  

<p>Nitrogen-added austenitic stainless steels exhibit excellent work-hardenability due to planar slips of dislocations. Two mechanisms of the planar slip have been proposed so far: glide plane softening mechanism and stacking-fault energy (SFE) reduction mechanism, which are thought to be dependent on nitrogen content and deformation temperature. In this study, conventional TEM, STEM-EDS and HR-STEM characterizations were carried out to clarify the influences of deformation temperature and nitrogen content on the dislocation characteristics of austenitic stainless steels. In the case of the nitrogen-added steel, the dislocation configurations became planar at a high temperature, 973 K. HR-STEM analysis revealed that SFE decreased with N addition and increased with temperature increase. Weak-beam TEM and HR-STEM analyses revealed that the planar dislocations were composed of 60° mixed-dislocations and SFs at room temperature, and edge-dislocation and SFs at 973 K. These results suggested that the edge components of defects interacted elastically with N and N-Cr pairs and contributed to the origin of the planar slips.</p>

DOI： 10.2355/tetsutohagane.tetsu-2024-054

CiNii Research

DOI： 10.1016/j.mtchem.2024.102132

Web of Science

Language：English  

Combined addition of interstitial-substitutional elements has been acknowledged to contribute to the increase in the strengths of steels. For further improvements in mechanical properties, their atomic-scale interaction mechanisms with dislocations are required to be examined. In this study, both high-resolution transmission electron microscopy and atom-probe tomography were used to correlate interstitial-substitutional elements with dislocation characteristics in austenitic stainless steels. Three types of dislocation core structures are identified and associated with their strain fields as well as N and Cr atoms in the N-added steels. It is revealed that N atoms interact elastically with the dislocations, followed by the segregation of Cr atoms via the chemical interaction between N and Cr atoms. This insight significantly improves the understanding of the multiple alloying mechanism in metallic materials such as interstitial alloys and high-entropy alloys.

CiNii Research

Language：English   Publisher：Scientific Reports  

Combined addition of interstitial-substitutional elements has been acknowledged to contribute to the increase in the strengths of steels. For further improvements in mechanical properties, their atomic-scale interaction mechanisms with dislocations are required to be examined. In this study, both high-resolution transmission electron microscopy and atom-probe tomography were used to correlate interstitial-substitutional elements with dislocation characteristics in austenitic stainless steels. Three types of dislocation core structures are identified and associated with their strain fields as well as N and Cr atoms in the N-added steels. It is revealed that N atoms interact elastically with the dislocations, followed by the segregation of Cr atoms via the chemical interaction between N and Cr atoms. This insight significantly improves the understanding of the multiple alloying mechanism in metallic materials such as interstitial alloys and high-entropy alloys.

DOI： 10.1038/s41598-024-54852-w

Web of Science

Scopus

PubMed

Language：English  

DOI： 10.1093/micmic/ozad067.141

PubMed

Publishing type：Research paper (scientific journal)  

Carbon redistribution is one of the fundamental issues in quenched and aged carbon steels, which results in carbon clustering and carbide precipitation. Carbon clusters and carbides act as obstacles for dislocations, which have been known closely correlated with strengths of steels. In this study, conventional TEM, atomically-resolved TEM and In-situ heating TEM observations were carried out to understand carbon redistribution in a low-carbon ferritic steel aged at 473 K. Some ε-carbides were uniformly precipitated in the matrix, and the others were heterogeneously precipitated along dislocations. These ε-carbides were coexisted with carbon clusters with c/a ratio of 1.1, assumed to be the formation of Zener-ordered Fe8C. Moreover, θ-carbides were found precipitated from ε-carbides via dissolution of ε-carbides, confirmed by In-situ heating TEM experiments. These results suggested that Zener ordering should be the fundamental step for the following carbide precipitation sequences in the steel aged at 473 K.

DOI： 10.1016/j.actamat.2023.118919

Web of Science

Scopus

researchmap

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

Electron tomography (ET) is a powerful tool for elucidating the properties and functionalities of materials. The innovative development of aberration-corrected electron microscopy in the early 21st century and the remarkable progress in the development of detectors, equipment and devices related to ET have resulted in substantial improvements in resolution. However, not only advances in hardware but also remarkable developments in reconstruction algorithms and related three-dimensional (3D) analysis methods have contributed to the resolution improvements. ET has its own problems, including the missing-wedge problem due to the limited tilt-angle range and the need to acquire numerous specimen-tilt images, the latter of which is time-consuming and can potentially damage the specimen. This review paper aims to (i) describe the established basic theories and definitions regarding 3D resolution of ET and practical 3D resolution measurement methods, (ii) discuss various reconstruction algorithms that effectively overcome the aforementioned problems and (iii) describe recent progress in the core of ET applications in materials science with respect to atomic ET, analytical ET and in-situ ET. The aforementioned ET problems have been addressed with each method developed in each field of application. Notably, in terms of aim (ii), recently developed reconstruction algorithms can reduce the number of projection images (specimen-tilt images) needed to attain a certain resolution without violating the Nyquist criterion. This approach is interpreted as a novel non-linear sampling theorem.

DOI： 10.1093/jmicro/dfac071

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Scopus

PubMed

researchmap

Publisher：IEEE Transactions on Applied Superconductivity  

YBa2Cu3O7-δ (YBCO) superconductors exhibit the perfect diamagnetism effect at a critical temperature (Tc) of 93 K or lower. This effect can be exploited by creating materials that shield the magnetic field. In this study, light and flexible magnetic field shielding sheets were prepared by mixing a polyethylene terephthalate (PET) resin with YBCO powders of different particle sizes. The investigation of the effect of the YBCO particle size on the structure of the sheets formed resulted in the preparation of sheets in which YBCO powders were uniformly dispersed in the resin. By contrast, sheets that were prepared with using larger particle sizes showed more cracks and vacancies. The ease of occurrence of cracks and pores was determined to be dependent on the particle size, and it was shown that powders with small particle sizes are suitable for sheets.

DOI： 10.1109/TASC.2022.3189603

Web of Science

Scopus

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

DOI： 10.1111/jace.18242

Web of Science

Scopus

researchmap

Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jace.18242

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

DOI： 10.7566/JPSJ.90.034803

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

DOI： 10.1016/j.scriptamat.2020.10.044

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

DOI： 10.7566/JPSJ.90.034803

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

DOI： 10.1007/s10853-020-05417-5

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

DOI： 10.1038/s41598-020-77156-1

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

DOI： 10.1016/j.micron.2020.102927

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

DOI： 10.1039/d0cc04789a

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

DOI： 10.1007/s10853-020-04602-w

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

DOI： 10.1021/acsanm.0c00027

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

DOI： 10.1002/pssr.201900488

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

DOI： 10.1016/j.matchar.2019.110006

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

DOI： 10.1021/acsanm.9b01221

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

DOI： 10.1109/TASC.2019.2902693

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

DOI： 10.1002/chem.201901623

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

DOI： 10.2355/tetsutohagane.TETSU-2018-067

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

DOI： 10.2320/matertrans.L-M2018845

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

DOI： 10.2320/matertrans.MT-M2019190

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

DOI： 10.7567/1347-4065/ab0f23

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

DOI： 10.2464/jilm.69.180

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

DOI： 10.7567/1347-4065/ab0727

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

DOI： 10.1038/s41598-018-35134-8

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

DOI： 10.1039/c8nr02246a

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

DOI： 10.2355/isijinternational.ISIJINT-2017-756

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

DOI： 10.1109/TASC.2018.2818752

Language：English  

DOI： 10.1016/B978-0-444-64110-6.00005-6

Language：English  

DOI： 10.1039/c8ta00426a

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

DOI： 10.2320/matertrans.L-M2018802

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

DOI： 10.2320/jinstmet.J2018015

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

DOI： 10.2464/jilm.68.201

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

DOI： 10.1039/c7dt04794k

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

DOI： 10.1002/cctc.201700995

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

Microstructures and formability of scandium and zirconium added Al-Mg-Mn alloy sheets with various heating conditions were examined to improve their mechanical properties. Formability of these samples were judged by the Lankford value, r-value. It was possible to fabricate mechanically balanced Al-Mg-Mn-Sc-Zr alloy with high hardness 76.2 Hv and with high formability with r = 1.2, by not only adding scandium and zirconium but also optimizing the heat treatment conditions.

DOI： 10.1016/j.micron.2017.07.003

Language：Japanese  

In this study, Cu-added ferritic stainless steel sheets were investigated to understand the influences of Cu contents on the high-temperature strength during the high-temperature deformation. High-temperature proof stress at 700~900°C was improved greatly by addition of more than 1&#37; of Cu. In the case of static aging at 900°C, the rod-shaped ε-Cu particles satisfied the K-S orientation relationship with the α matrix, but spherical-shaped ε-Cu particles without specific orientation relationship started appearing during the tensile deformation at 900°C. Similarly, the spherical-shaped and fine ε-Cu particles were observed during the thermal fatigue process in the temperature range from 200°C to 700°C with a 50&#37; restriction ratio. During the observation using the high-temperature in-situ TEM straining, it was clarified that the ε-Cu particles were divided by dislocation shearing and parts of them were found dissolved. According to the LSW theory, it was suggested that the microstructure with fine and spherical-shaped ε-Cu particles was formed by the repetition of dissolution and precipitation during the high-temperature deformation.

DOI： 10.2355/tetsutohagane.TETSU-2017-001

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

DOI： 10.1063/1.4986361

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

DOI： 10.1002/smll.201700099

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

In the context of high temperature superconductors, pulsed laser deposition derived GdBa₂Cu₃O_7-δ sample with BaHfO₃ nanoparticles has been reported to achieve high current density and good I_C-B-θ characteristics at high temperatures. Herein, we have carried out a thorough nanostrucural characterization of BaHfO₃ nanoparticles embedded in GdBCO matrix using scanning transmission electron microscopy, with an emphasis on the dispersion behavior, morphologies and nanostrain, to understand the role of BaHfO₃ nanoparticles.

DOI： 10.1016/j.ultramic.2016.11.015

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

DOI： 10.1093/jmicro/dfw103

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

Microstructure and mechanical property of silicon nitride (Si₃N₄) ceramic are strongly dependent on the selection of sintering additives. When rare-earth (RE) oxide is used as the sintering additive, segregation of RE ions at interface between Si₃N₄ grain and intergranular glassy film (IGF) is believed to play a critical role. Although the ionic radius of RE ion is known to be an empirical parameter to modify the mechanical property, the correlation between the segregated ions and their ionic radii is still under controversy. In order to address this issue, (i) rate of α-β phase transformation and (ii) segregation behavior at the interface were studied for Si₃N₄ ceramics sintered using mixture of La₂O₃ and Lu₂O₃ as additives in this study. Specimens of Lu content 30% and higher exhibited lower activation energies for the α-β phase transformation as compared with those of Lu content 20% and lower. In terms of the segregation behavior, La was preferably segregated at one site and Lu at the other site along β-Si₃N₄/IGF interface in the specimens of Lu content 30% and higher. It is understood from these results that Lu segregation site should be more closely related with grain growth.

DOI： 10.1111/jace.14663

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

DOI： 10.1088/1361-6668/30/2/025022

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

DOI： 10.7567/JJAP.56.010312

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

DOI： 10.2320/matertrans.M2016258

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

DOI： 10.1002/anie.201612473

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

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

DOI： 10.1109/TASC.2016.2549863

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

DOI： 10.1016/j.micron.2015.12.002

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

DOI： 10.2464/jilm.66.609

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

Joint techniques connecting REBa₂Cu₃O_7-δ(REBCO) coated conductors (CCs) are required to fabricate long length CCs and to repair locally damaged one. Two pieces of REBCO CC were attempted to be jointed using a metal organic deposition (MOD) method. The starting solution for YBCO layer was coated on GdBCO layer of CCs and calcined to fabricate precursor films, two of which were stuck together in a face to face manner, and then these films were pressurized and crystallized to joint them. Two CCs were successfully jointed together with c-axis oriented YBCO without pores and reacted phases at the joint interface.

DOI： 10.1016/j.phpro.2016.04.003

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

DOI： 10.2355/isijinternational.ISIJINT-2015-711

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

DOI： 10.1016/j.phpro.2016.04.001

Language：Japanese  

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

DOI： 10.1039/c5cc04286k

Language：Japanese  

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

DOI： 10.1016/j.phpro.2015.05.164

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

DOI： 10.2355/tetsutohagane.TETSU-2015-004

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

DOI： 10.2320/jinstmet.J2014063

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

DOI： 10.2320/jinstmet.J2015026

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

DOI： 10.2355/tetsutohagane.101.315

Language：English  

DOI： 10.1246/bcsj.20140248

Language：English  

Language：English  

Language：English  

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

Interaction between precipitates and dislocations is the most important factor governing mechanical properties of precipitation-hardening alloys. Thus large numbers of microstructural characterizations have been implemented to analyze this interaction by measuring critical angles and precipitate intervals. To date, these investigations have been performed using two-dimensional conventional transmission electron microscopy. In this study, a combination of transmission electron microscopy and computed tomography, three-dimensional electron tomography, was applied on balanced Al-Mg-Si alloy to measure critical angles and precipitate intervals and obtained 121 and 60 nm for β″ precipitates, respectively. The yield stress of precipitates measured by assigning these values, 150 MPa, was applicable to that measured from tensile test, 196 MPa.

DOI： 10.1016/j.jallcom.2014.02.059

Language：Japanese  

Language：Japanese  

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

DOI： 10.1039/c3dt52846d

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

DOI： 10.1246/bcsj.20140248

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

DOI： 10.1017/S1431927614000841

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

DOI： 10.2355/isijinternational.54.148

Language：English  

DOI： 10.1007/978-3-642-38934-4_8

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

DOI： 10.1016/j.micron.2013.06.010

Language：English   Publishing type：Research paper (international conference proceedings)  

Effect of nano-sized particles on the mechanical properties of Y2O3
Razavi Khosroshahi, H., Liu, X., Saito, N., Nakashima, K., Kaneko, K.
2013
Materials Science Forum 750 , pp. 44-47

Language：English  

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

GdBa₂Cu₃O_7-δ is one of the best candidates for the superconducting coated conductors because it has high critical temperature and high critical current density under high magnetic fields. In this study, superconducting GdBa₂Cu₃O_7-δ films were fabricated by fluorine-free metal organic deposition method via two different calcination temperatures, 723K and 873K, to examine the influence of calcination temperature on film growth and superconducting characteristics. Critical temperatures and critical current densities of the sample calcined at 873K were superior to the sample calcined at 723K. In the case of the sample calcined at 723K, the mixture of amorphous and crystalline phases was observed, and that of a- and c-axis oriented grains after the crystallization. In the case of the sample calcined at 873K, the randomly oriented crystalline phases were observed, and the mixture of c-axis oriented grains and (Gd, Al)₂BaO₄ phase after the crystallization. These microstructural changes caused the differences in superconducting characteristics.

DOI： 10.1016/j.micron.2013.04.004

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

DOI： 10.1002/cctc.201300157

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

DOI： 10.1016/j.physc.2013.04.067

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

DOI： 10.1002/anie.201205584

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

DOI： 10.1016/j.phpro.2014.09.035

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

DOI： 10.4028/www.scientific.net/MSF.750.48

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

DOI： 10.4028/www.scientific.net/MSF.750.44

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

DOI： 10.1016/j.phpro.2013.04.078

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

DOI： 10.1557/opl.2012.430

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

DOI： 10.1088/0953-2048/25/10/105013

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

DOI： 10.1111/j.1551-2916.2012.05379.x

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

DOI： 10.1016/j.snb.2011.11.047

Language：English  

DOI： 10.1016/j.phpro.2012.03.426

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

DOI： 10.1002/anie.201105080

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

DOI： 10.2355/isijinternational.52.1362

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

DOI： 10.1002/chem.201002675

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

DOI： 10.1016/j.physc.2011.09.009

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

DOI： 10.1016/j.physc.2011.05.106

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

DOI： 10.1016/j.physc.2011.05.074

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

DOI： 10.1016/j.scriptamat.2011.06.010

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

DOI： 10.1016/j.ultramic.2011.03.021

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

DOI： 10.1103/PhysRevB.84.045411

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

DOI： 10.1039/c1cc10231a

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

DOI： 10.1093/jmicro/dfr029

Language：English  

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

DOI： 10.1021/nl102738n

Language：English  

DOI： 10.1021/la101335a

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

DOI： 10.1039/c1cc11303h

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

DOI： 10.3131/jvsj2.54.253

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

DOI： 10.1039/c0ob00407c

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

DOI： 10.1002/smll.201001394

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

We report the development of a new templating molecule designed by the modification of a helix-forming β-1,3-glucan polysaccharide to the cationic semiartificial one and its application to the fabrication of one-dimensional (1D) gold nanostructures by simple photoirradiation. Transmission electron microscopy observation showed that Au(III) ions are primarily reduced to gold nanoparticles self-assembling into the 1D array with the aid of the cationic β-1,3-glucan polysaccharide, which gradually fuse into the 1D gold nanostructure with the tapelike structure. The gold nanotape structure could not be created by neutral β-1,3-glucan polysaccharides or random coil synthetic cationic polymers. These findings consistently support the view that Au(III) ions are reduced by unmodified OH groups to gold nanoparticles under the photoirradiation, which are wrapped in the helical structure of the cationic β-1,3-glucan polysaccharide and eventually fuse into gold nanotapes. One may regard, therefore, that this cationic β-1,3-glucan polysaccharide can act as an "all-in-one" template playing three roles of reduction, 1D arrangement, and fusion of gold nanoparticles. In addition, we found an interesting phenomenon that the obtained gold nanotapes coated with cationic β-1,3-glucan polysaccharides show unique surface-enhanced Raman scattering for anionic porphyrines organized on the surface of gold nanotapes through the electrostatic interaction.

DOI： 10.1021/la101335a

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

DOI： 10.1016/j.physc.2010.05.073

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

DOI： 10.1016/j.physc.2010.05.086

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

DOI： 10.1088/0004-6256/140/5/1456

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

Electrolytic synthesis of Al-doped ZnO nanopowders with low electrical resistivity
T. Takaki, K. Kurosawa, N. Saito, H. Razavi, K. Kaneko, K. Nakashima and T. Hiraaki
Journal of American Ceramics Society
93 [10] 3088–3091 (2010)

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

DOI： 10.1111/j.1551-2916.2010.04048.x

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

BaZrO₃ doped GdBa₂ Cu₃ O _7-δ superconductor was prepared by pulsed layer deposition using a KrF excimer laser, which showed isotropic characteristics of critical current density, J_C, for magnetic-field orientations, ∼4.0× 109 A m^-2 at 1.0 T. Microstructural and morphological characterization of resulting artificial pinning centers were conducted by transmission electron microscopy and electron tomography, which confirmed the presence of one-dimensional artificial pinning centers, BaZrO₃ nanorods. Since there is noticeable anisotropy from GdBa₂ Cu ₃ O_7-δ superconductor without doping BaZrO ₃, the pinning observed for all magnetic-field orientations are due to the high density and high dispersion of these BaZrO₃ nanorods with very wide angular distributions.

DOI： 10.1063/1.3486213

Language：English  

Language：Others  

DOI： 10.1039/c001012j

Other Link： http://dx.doi.org/10.1039/c001012j

Language：English  

Language：English   Publishing type：Research paper (international conference proceedings)  

Electrolytic synthesis of Al-doped ZnO powders with low electrical resistivity
T. Takaki, K. Kurosawa, S. Sukenaga, N. Saito, H. Razavi, K. Kaneko, K. Nakashima, E. Okunishi and T. Hiraaki
Proceeding of the 2d International Symposium on Advanced Microscopy and Theoretical Calculations
Vol. 2, pp.266-267

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

DOI： 10.1016/j.jallcom.2009.12.017

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

Crack tip dislocations observed by combining scanning transmission electron microscopy and computed tomography
S. Sadamatsu, M. Tanaka, K. Higashida, K. Kaneko, M. Mitsuhara, S. Hata, M. Honda
Advanced Materials Research
Vol. 89-91 (2010) pp.473-478

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

DOI： 10.1016/j.hydromet.2009.12.012

Language：Japanese  

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

DOI： 10.1039/c001012j

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

DOI： 10.4028/www.scientific.net/AMR.89-91.473

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

DOI： 10.1002/chem.200901772

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

DOI： 10.1002/chem.200902305

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

DOI： 10.1093/jmicro/dfp027

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

DOI： 10.1016/j.physc.2009.05.059

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

B12-TiO2 Hybrid Catalyst for Dehalogenation of Organic Halides
H. Shimakoshi, E. Sakumori, K. Kaneko, and Y. Hisaeda
Chemistry Letters
Vol.38, No.5 (2009) pp.468-469

Other Link： http://dx.doi.org/10.1246/cl.2009.468

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

DOI： 10.1002/chem.200802152

Other Link： http://dx.doi.org/10.1002/chem.200802152

Language：English  

DOI： 10.1002/chem.200802152

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

DOI： 10.1021/ja8098239

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

synthesis of amphiphilic π-conjugated acyclic oligopyrroles and the formation of solvent-assisted aggregates are reported. We have prepared various types of BF₂ complexes of 1,3-dipyrrolylpropane-1,3-diones bearing aryl rings substituted with hydrophilic polyethyleneglycol (PEG) chains, both as acyclic anion receptors and as building subunits for organized architectures based on π-π stacking. The formation of supramolecular H-type assemblies of these "amphiphilic" derivatives in aqueous solution was suggested by UV/Vis and fluorescence spectroscopy and further supported by ¹H NMR and dynamic light scattering (DLS) analyses. Cryogenic transmission electron microscopy (cryo-TEM) analyses of the aqueous solutions suggest that the fabrication of nanoscale network structures and vesicles depends on the peripheral substituents. The H-aggregates in aqueous solution are sensitive to the conditions required for transformation into monomers through replacement with miscible solvents such as alcohols and into J-type aggregates by water evaporation and freeze-drying procedures. However, they are fairly stable and sustainable to anion binding, whereas on CH₂Cl₂ extraction they are transformed into other assembled modes but remain in the aqueous solution. The metastable states of affairs for distributions between two immiscible solvents are controlled by the orders of solution preparation; this also suggests that the formation of stable assemblies is assisted by water molecules. Furthermore, assemblies in which the stacking modes depend on the aliphatic side chains are also observed in a nonpolar hydrocarbon solvent.

DOI： 10.1002/chem.200802152

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

DOI： 10.1016/j.micron.2008.11.004

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

Supramolecular Hydrogel Exhibiting Four Basic Logic Gate Functions to Fine-tune Substance Release
H. Komatsu, S. Matsumoto, S. Tamaru, K. Kaneko, M. Ikeda, I. Hamachi
Journal of the American Chemical Society
Vol.131 No.15 (2009) pp.5580–5585

Other Link： http://dx.doi.org/10.1021/ja8098239

Language：English  

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

DOI： 10.1021/ja8058843

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

DOI： 10.2320/matertrans.MD200813

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

DOI： 10.1246/cl.2009.468

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

DOI： 10.1246/cl.2009.812

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

We have demonstrated that giant polymer micelles with a uniform diameter (ca. 200 nm) can be fabricated by "supramolecular wrapping" of poly(styrene) (PS) with the β-1,3glucan polysaccharide, with the β-1,3glucan fastening the PS chains together in a noncovalent fashion to facilitate the formation of a supramolecular polymer network on the O/W emulsion surface. Various spectroscopic and microscopic investigations have revealed that the inner cores of the micelles are comprised of a hydrophobic PS net-work, whereas the surfaces consist of a hydrophilic β-l,3-glucan layer. Accordingly, functional guest molecules can easily be encapsulated inside the cavity through hydrophobic interactions. The encapsulated molecules can simply be released from the micelle cores by peeling off the β-l,3-glucan shell in a supramolecular manner. As functional groups can be introduced into the glucose side-chain unit in a straightforward manner by chemical modification, the micellar surface can acquire further functions useful for molecular recognition. These results show that the micelles obtained could have applications as novel soft nanoparticles, which would be indispensable not only for nanotechnologies, but also for biotechnologies aimed at gene or drug delivery systems.

DOI： 10.1002/chem.200901783

Language：English  

Other Link： http://dx.doi.org/10.1039/b815779k

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

A great deal of attention has been focused on exploiting novel methods to fabricate thin carbonaceous capsules from multiple components for advanced materials. A layer-by-layer (LbL) method is therefore being introduced to synthesize thin and multi-carbon nanotube (CNT)-based hollow capsules from CNT complexes with cationic or anionic complementarily functionalized β-1,3-glucans as building-blocks. These ionic β-1,3-glucans wrap around single-walled carbon nanotubes (SWNTs) and double-walled carbon nanotubes (DWNTs) to form water-soluble complexes with ionic groups on their exterior surface. Alternate self-assembly of these CNT complexes on the silica particles is demonstrated in solution by electrostatic interactions. The LbL adsorption processes were carefully monitored by ß-potential measurements, frequency shifts of a quartz crystal microbalance (QCM), and electron micrographs. Silica particles were then dissolved away by HF acid to obtain CNT-based hollow capsules composed of SWNTs and DWNTs. We believe that these novel surface adsorption methods are useful for potential design of CNT-based advanced functional materials.

DOI： 10.1021/la802211q

Language：English   Publishing type：Research paper (international conference proceedings)  

Dislocation tomography made easy: a reconstruction from ADF STEM images obtained using automated image shift correction
J H Sharp, J S Barnard, K Kaneko, K Higashida and P A Midgley
J. Phys.: Conf. Ser. 126 (2008) 012013

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

DOI： 10.2320/matertrans.E2008002

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

Alternate Layer-by-Layer Adsorption of Single- and Double- Walled Carbon Nanotubes Wrapped by Functionalized beta-1,3-Glucan
Polysaccharides
K. Sugikawa, M. Numata, K. Kaneko, K. Sada, and S. Shinkai
Langmuir, Vol.24 No.23 (2008) pp. 13270–13275

Other Link： http://dx.doi.org/10.1021/la802211q

Language：English  

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

DOI： 10.1016/j.scriptamat.2008.06.042

Language：English  

Other Link： http://dx.doi.org/10.1039/b808599d

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

DOI： 10.2320/matertrans.MAW200828

Language：English  

Other Link： http://dx.doi.org/10.1246/bcsj.81.1002

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

DOI： 10.1016/j.msea.2008.02.022

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

It is known that an achiral water-soluble polythiophene (PT-1) is chirally twisted by complexation with a natural helix-forming polysaccharide, shizophyllan (SPG). We found that the chirality can be immobilized by sol-gel reaction of tetraethoxysilane (TEOS) with benzylamine as a catalyst ("solution mechanism"), where SPG acts not only as a chirality inducer for PT-1 but also as a chemical glue to adsorb silica particles onto the composite surface. When a complex with amine-appended SPG (SPG-NH) was used as a template, the sol-gel reaction proceeded according to the "surface mechanism," where silica particles were formed mainly on the composite surface due to the catalytic effect of the covalently bound amino groups and thus the reaction conditions became milder. It was confirmed that under the "surface mechanism" the chemical and physical properties of the original PT-1/SPG-NH composite are maintained more efficiently.

DOI： 10.1246/bcsj.81.1002

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

Crack Tip Dislocations Revealed by Electron Tomography in Silicon Single Crystal
M. Tanaka, K. Higashida, K. Kaneko, S. Hata, M. Mitsuhara
Scripta Materialia
59 (2008) 901–904

Other Link： http://dx.doi.org/10.1016/j.scriptamat.2008.06.042

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

Production of aluminum-matrix carbon nanotube composite using high pressure torsion
T. Tokunaga, K. Kaneko and Z. Horita
Material Science and Engineering A
Vol. 490, No. 1-2, (2008) pp. 300-304

Other Link： http://dx.doi.org/10.1016/j.msea.2008.02.022

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

Nanocolloid Pd-Au as catalyst fo the direct synthesis of hydrogen peroxide from H2 and O2
Y. Nomura, T. Ishihara, Y. Hata, K. Kitawaki, K. Kaneko and H. Matsumoto
ChemSusChem
Vol. 1, No 7 (2008) pp. 619-621

Other Link： http://dx.doi.org/10.1002/cssc.200800029

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

DOI： 10.1002/cssc.200800029

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

DOI： 10.1016/j.diamond.2008.03.012

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

Microstructure and local magnetic induction of segmented and alloyed Pd/Co nanocomposites encapsulated inside vertically aligned multiwalled carbon nanotubes, Y. Hayashi, T. Fujita, T. Tokunaga, K. Kaneko, M. Tanemura, T. Butler, N. Rupesinghe, J.D. Carey, S.R.P. Silva, K.B.K. Teo, G.A.J. Amaratunga, Diamond and Related Materials, Vol. 17, No. 7-10, (2008), pp. 1525-1528

Other Link： http://dx.doi.org/10.1016/j.diamond.2008.03.012

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

The Fine-Grained Structure in Magnesium Alloy Containing Long-Period Stacking Order Phase
T. Morikawa, K. Kaneko, K. Higashida, D. Kinoshita, M. Takenaka and Y. Kawamura
Materials Transactions
Vol.49, No.6 (2008) pp.1294-1297

Other Link： http://dx.doi.org/10.2320/matertrans.MC2007110

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

DOI： 10.2320/matertrans.MC2007110

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

DOI： 10.1016/j.scriptamat.2007.12.010

Language：English  

Language：English  

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

DOI： 10.2320/jinstmet.72.299

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

Creation of Hierarchical Carbon Nanotube Assemblies through Alternative Packing of Complementary Semi-artificial -1,3-Glucan/Carbon Nanotube Composites
M. Numata, K. Sugikawa, K. Kaneko,and S. Shinkai
Chemistry a European Journal
Vol. 14, Issue 8 (2008) pp. 2398 - 2404

Other Link： http://dx.doi.org/10.1002/chem.200701205

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

Much attention has been focused on exploiting novel strategies for the creation of hierarchical polymer assemblies by the control of the assembling number or the relative location among neighboring polymers. We here propose a novel strategy toward the creation of "hierarchical" single-walled carbon nanotube (SWNT) architectures by utilizing SWNT composites with cationic or anionic complementary semiartificial β-1,3-glucans as "building blocks". These β-1,3-glucans are known to wrap SWNTs helically, to create one-dimensional superstructural composites. If the cationic composite is neutralized by an anionic composite, a well ordered SWNT-based sheet structure was created. Transmission electron microscopy (TEM) observation revealed that this sheet structure is composed of highly-ordered fibrous assemblies of SWNTs. This suggests that the cationic and anionic composites are tightly packed through electrostatic interactions. Moreover, both of the final assembly structures are readily tunable by adjusting the cation/anion ratio. The self-assembling modulation of functional polymers is associated with the progress in ultimate nanotechnologies, thus enabling us to create numerous functional nanomaterials. We believe, therefore, that the present system will extend the frontier of SWNT research to assembly chemistry including "hierarchical" superstructures.

DOI： 10.1002/chem.200701205

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

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

DOI： 10.1016/j.ultramic.2007.04.020

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

Microstructural and Mechanical Characteristics of AZ61 Magnesium Alloy Processed by High-Pressure Torsion
Y. Harai, M. Kai, K. Kaneko, Z. Horita and T. G. Langdon
Materials Transactions
Vol.49 No.1 (2008) pp.76-83

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

DOI： 10.1039/b808599d

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

DOI： 10.1088/1742-6596/126/1/012013

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

DOI： 10.1039/b815779k

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

DOI： 10.2320/matertrans.ME200718

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

DOI： 10.1016/j.tetlet.2007.11.120

Language：Japanese  

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

DOI： 10.2320/jinstmet.71.1080

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

Fabrication and optical characterization of vanadium oxide nano-particulates thin film, S. Tanemura, L. Miao, Y. Kajino, Y. Itano, M. Tanemura, S. Toh, K. Kaneko, Y. Mori, Journal of Materials Science: Materials in Electronics, Vol.18 (2007) pp.S43-S46

Other Link： http://dx.doi.org/10.1007/s10854-007-9182-z

Language：English  

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

DOI： 10.1016/j.physc.2007.04.289

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

DOI： 10.1007/s10854-007-9182-z

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

DOI： 10.1016/j.apsusc.2007.07.065

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

DOI： 10.1016/j.stam.2007.02.012

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

DOI： 10.1016/j.scriptamat.2007.03.054

Language：English  

Other Link： http://dx.doi.org/doi:10.1016/j.susc.2006.12.062

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

DOI： 10.1246/cl.2007.878

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

DOI： 10.1016/j.susc.2006.12.062

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

Effect of Mo Powder Surface Condition on Fabrication of Mo-SiO2 Functionally Graded Materials with Slipcasting Method, A. Umemoto, K. Hayashi, K. Hayano, N. Saito, K. Kaneko and K. Nakashima, Ceramic Transactions, Vol.198 (2007) pp.219-224

Language：English  

Other Link： http://dx.doi.org/10.1039/b701583f

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

DOI： 10.1016/j.corsci.2006.12.015

Language：English  

Other Link： http://dx.doi.org/10.1002/chem.200790048

Language：English  

Other Link： http://dx.doi.org/10.1016/j.diamond.2006.11.039

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

DOI： 10.1021/bm0611937

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

DOI： 10.1016/j.diamond.2006.11.039

Language：Japanese  

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

Microstructures of BaZrO₃ (BZP) doped as artificial pinning centers in ErBa₂Cu₃O_7-δ (ErBCO) films were studied by high-resolution transmission electron microscopy (HR-TEM). BZP-doped ErBCP films were grown by a pulsed laser deposition (PLD) method. In the HR-TEM observation, the presence of nanorods with 10nm average diameter was confirmed from Moiré fringe analysis. The lattice constant of nanorods in the ErBCP was measured using a selected area electron diffraction pattern (SAEDP) as 0.416 nm, which was in good agreement with the lattice constant of BZP, 0.419 nm, provided by X-ray diffraction data. Moiré fringes were observed in both cross-sectional-view and plan-view of the HR-TEM images. The distances of the Moiré fringes were 2.07, 3.22, and 3.05 nm, and which corresponded to the 200, 006, and 110 reflections of the ErBCP matrix and the 200, 002, and 110 reflections of nanorods, respectively. It is suggested that BZO disperses in ErBCO film as nanorods.

DOI： 10.1143/JJAP.46.708

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

DOI： 10.2320/jinstmet.71.213

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

DOI： 10.1246/bcsj.80.410

Language：English  

Other Link： http://dx.doi.org/10.1246/bcsj.80.410

Language：English  

Other Link： http://dx.doi.org/10.1143/JJAP.46.708

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

DOI： 10.1021/nl062677b

Language：English  

Other Link： http://dx.doi.org/10.1143/JJAP.46.356

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

DOI： 10.1039/b701068k

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

DOI： 10.1002/chem.200601813

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

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

Conventional sublimable solid solvents such as naphthalene, ferrocene and camphor finely dissolve [60]fullerene (C₆₀) in the solution state. After cooling to room temperature and removal of the solid solvents from the composites, C₆₀ forms fibrous superstructures that are characterized by scanning electron microscopy. X-Ray powder diffraction study and ATR/IR analysis show that the C₆₀ superstructures preserve the fcc lattice as in pristine C₆₀. NMR together with elemental analysis reveals the presence of significantly less solvent in the superstructures. We have attempted to immobilize or polymerize the superstructures by a γ-ray irradiation technique that eventually leads to the formation of a rod-like fullerene polymer. HR-TEM and photoluminescence studies support the formation of the superstructures and the subsequent γ-ray induced polymerization of C ₆₀, which will provide new avenues for the realistic application of these with unprecedented materials properties.

DOI： 10.1039/b701583f

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

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

DOI： 10.1143/JJAP.46.356

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

DOI： 10.1021/cm062031k

Language：English  

Other Link： http://dx.doi.org/10.1021/cm062031k

Language：Japanese  

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

DOI： 10.1016/j.msea.2006.08.024

Language：Japanese  

Language：English  

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

Microstructure of ErBa₂Cu₃O_7-δ films with BaZrO₃ as artificial pinning centers has been studied toward power application of a high temperature superconductor. ErBa₂Cu₃O_7-δ films containing 1.5 mass% BaZrO₃ were grown by a pulsed laser deposition method. Microstructure of the ErBa₂Cu₃O_7-δ film with BaZrO₃ was investigated by transmission electron microscopy (TEM). In the cross-sectional TEM observation, the nano-rods grew up along near the c-axis of ErBa₂Cu₃O_7-δ film were observed. Width of the nano-rods was about 10 nm. We found twins with the averaged width of about 70 nm. The moiré fringes were also observed. In the EDS mapping analysis, zirconium was not detected clearly from the present TEM specimen. Space of the moiré fringes is about 1.9 nm. The lattice constant of a material in the ErBa₂Cu₃O_7-δ film measured from the space of the moiré fringes is calculated to be 0.423 nm which coincides with the lattice constant of BaZrO₃ (0.419 nm). Also, the lattice constant measured from the SADP is very close to the value of the BaZrO₃. It is suggested that BaZrO₃ disperses in ErBa₂Cu₃O_7-δ film as the nano-rods.

DOI： 10.1016/j.physc.2006.06.012

Language：English  

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

DOI： 10.1016/j.stam.2006.05.011

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

Surface resistances (R_S) have been measured for EuBa₂Cu₃O_7-δ (EuBCO) films grown in an ozone atmosphere. We grew BaZrO₃ dispersed EuBCO films with artificial pinning centers (APCs) in an ozone atmosphere. We have investigated the effects of BaZrO₃ dispersion into EuBCO films. The EuBCO films were grown using a pulsed laser deposition (PLD) in an ozone atmosphere on (1 0 0) SrTiO₃ substrates. We use a pure EuBCO target and an EuBCO + 1.0 wt% BaZrO₃ target. By BaZrO₃ dispersion into EuBCO films, the crystallinity of BaZrO₃ dispersed EuBCO films was poorer than that of pure EuBCO films. BaZrO₃ dispersion into EuBCO films did not improve their superconducting characteristics. Then we evaluated microstructure by using transmission electron microscopy (TEM). We observed nano-rods in BaZrO₃ dispersed EuBCO films. However, we did not observe nano-rods in BaZrO₃ dispersed EuBCO films grown in an oxygen atmosphere. The differences between an ozone and an oxygen atmosphere influence on nano-rod forming. We found that the nano-rod size is important and is strongly related to not only RE (RE: Rare Earth) ion radii but also growth conditions of films.

DOI： 10.1016/j.physc.2006.06.016

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

DOI： 10.2320/jinstmet.70.845

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

DOI： 10.1016/j.stam.2006.06.006

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

Microstructure control using severe plastic deformation
Z. Horita K. Oh-ishi and K. Kaneko
Science and Technology of Advanced Materials
Vol.7 No.7(2006)pp.649-654.

Other Link： http://dx.doi.org/10.1016/j.stam.2006.05.011

Language：English  

Other Link： http://dx.doi.org/10.1016/j.physc.2006.06.016

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

Microstructure analyses of metal-filled carbon nanotubes synthesized by microwave plasma-enhanced chemical vapor deposition
Y. Hayashi T. Tokunaga K. Kaneko S. J. Henley V. Stolojan J. D. Carey and S. R. P. Silva
IEEE Transactions on Nanotechnology
Vol.5 No.5(2006)pp.485-490.

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

DOI： 10.1109/TNANO.2006.880456

Language：English  

Other Link： http://dx.doi.org/10.1002/anie.200601493

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

DOI： 10.1002/anie.200601493

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

Mo-SiO2 Functionally Graded Materials for High Intensity Discharge Lamps
A. Umemoto K. Hayashi K. Nakashima N. Saito K. Kaneko & K. Ogi
Developments and Application of Advanced Engineering Ceramics and Composites: Ceramic Transactions
Vol.192 (2006)pp.53-58.

Language：English  

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

DOI： 10.1246/cl.2006.816

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

DOI： 10.1021/ja063040x

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

Synthesis and Structural Characterization of Hollow Hexagonal Cylinder Co-SiO2 Composites Prepared in a Micelle Solution
S. Imagawa K. Inoke K. Kaneko M. Hideki K. Nakagawa S. Takenaka M. Kishida
Chemistry Letters
Vol.35 (2006)pp.816-817.

Other Link： http://dx.doi.org/10.1246/cl.2006.816

Language：English  

Other Link： http://dx.doi.org/10.1021/ja063040x

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

DOI： 10.1016/j.actamat.2006.02.029

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

Characterization of transport properties of multiwalled carbon nanotube networks by microwave plasma chemical vapor deposition
Y. Hayashi T. Tokunaga K. Kaneko and Z. Horita
Diamond and Related Materials
Vol.15 (2006)pp.1138-1142.

Other Link： http://dx.doi.org/10.1016/j.diamond.2006.01.006

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

DOI： 10.1016/j.diamond.2006.01.006

Language：English  

Other Link： http://dx.doi.org/10.1111/j.1551-2916.2005.00835.x

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

DOI： 10.1111/j.1551-2916.2005.00835.x

Language：English  

Language：English  

Other Link： http://dx.doi.org/10.1016/j.tsf.2005.08.191

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

DOI： 10.1016/j.tsf.2005.08.191

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

DOI： 10.1016/j.msea.2005.11.008

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

DOI： 10.2464/jilm.56.82

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

DOI： 10.1002/anie.200503128

Language：Japanese  

Language：English  

Other Link： http://dx.doi.org/10.1016/j.msea.2005.11.008

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

Sequential organization by a supramolecular twining approach toward the alignment of conjugated polymers
M. Takeuchi C. Fujikoshi Y. Kubo K. Kaneko S. Shinkai
Polymer Preprints Japan
Vol.55 No.1 (2006) pp.423-424

Language：English  

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

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

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

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

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

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

DOI： 10.2464/jilm.56.639

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

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

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

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

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

DOI： 10.1109/NANOEL.2006.1609696

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

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

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

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

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

DOI： 10.1021/la0520029

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

Photochromic Ag-TiO2 thin films by dual-target hellicon magnetron sputtering
L. Miao T. Jiang S. Tanemura M. Tanemura M. Mori S. Toh K. Kaneko
Advance Materials Research
Vol.11-12 (2006) pp.167-170.

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

Modification of Gold Nanorods Using Phosphatidylcholine to Reduce Cytotoxicity
H. Takahashi Y. Niidome T. Niidome K. Kaneko H. Kawasaki and S. Yamada
Langmuir
Vol.22 1(2006)pp.2-5.

Other Link： http://dx.doi.org/10.1021/la0520029

Language：English   Publishing type：Research paper (international conference proceedings)  

Grain Refinement of Commercial Al-Mg alloy Using Severe Torsion Straining Process
K. Neishi A. Higashino Y. Miyahara K. Nakamura K. Kaneko M. Nakagaki Z. Horita
Material Science Forum
Vol.503-504 (2006) pp.955-960.

Language：English   Publishing type：Research paper (international conference proceedings)  

Microstructures and Mechanical Properties of Mg alloy after Severe Torsion Straining Process
Y. Miyahara N. Emi K. Neishi K. Nakamura K. Kaneko M. Nakagaki Z. Horita
Material Science Forum
Vol.503-504 (2006) pp.949-954.

Language：English   Publishing type：Research paper (international conference proceedings)  

Application of Severe Torsion Straining Process for Grain Refinement of Steel
Y. Kawasaki K. Neishi Y. Miyahara K. Nakamura K. Kaneko M. Nakagaki Z. Horita
Material Science Forum
Vol.503-504 (2006) pp.943-948.

Language：English   Publishing type：Research paper (international conference proceedings)  

Continuous Grain Refinement Using Severe Torsion Straining Process
K. Nakamura K. Neishi K. Kaneko M. Nakagaki Z. Horita
Material Science Forum
Vol.503-504 (2006) pp.385-390.

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

Property of polysaccharide nano gel involves polyion complex consists of cationic polymer/ DNA
Y. Takeda N. Shimada K. Kaneko K. Sakurai S. Shinkai
Polymer Preprints Japan
Vol.55 No.1 (2006) pp.1858-1859

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

Solubilization of C60 by using biopolymers
A. Ikeda S. Ito J.-I. Kikuchi K. Kaneko M. Numata K. Sakurai S. Shinkai
Polymer Preprints Japan
Vol.55 No.1 (2006) pp.1888-1889

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

Creation of novel nanomaterials utilizing biomaterials based on natural polysaccharide-conjugated polymer complex
M. Numata S. Haraguchi T. Fujisawa K. Kaneko K. Sakurai S. Shinkai
Polymer Preprints Japan
Vol.55 No.1 (2006) pp.267-268

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

DOI： 10.1039/b510646j

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

DOI： 10.1021/la0515524

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

We have demonstrated that the creation of novel silica nanofibers with a uniform diameter is possible by utilizing β-1,3-glucan polysaccharide as a one-dimensional host for monoalkoxysilane; the finding establishes that β1,3-glucan can act not only as a novel one-dimensional host for metal alkoxide polycondensation but also as an interface between inorganic nanofibers and functional organic molecules.

DOI： 10.1039/b509285j

Language：English  

DOI： 10.1039/b506148b

Other Link： http://dx.doi.org/10.1039/b506148b

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

β-1,3-Glucan polysaccharides have triple-stranded helical structures whose sense and pitch are comparable to those of polynucleotides. We recently revealed that the β-1,3-glucans could interact with certain polynucleotides to form triple-stranded and helical macromolecular complexes consisting of two polysaccharide-strands and one polynucleotide-strand. This unique property of the β-1,3-glucans has made it possible to utilize these polysaccharides as potential carriers for various functional polynucleotides. In paticular, cell-uptake efficiency of the resultant polysaccharide/polynucleotide complexes was remarkably enhanced when functional groups recognized in a biological system were introduced as pendent groups. The β-1,3-glucans can also interact with various one-dimensional architectures, such as single-walled carbon nanotubes, to produce unique nanocomposites, in which the single-walled carbon nanotubes are entrapped within the helical superstructure of β-1,3-glucans. Various conductive polymers and gold nanoparticles are also entrapped within the helical superstructure in a similar manner. In addition, diacetylene monomers entrapped within the helical superstructure can be photopolymerized to afford the corresponding poly(diacetylene)-nanofibers with a uniform diameter. These findings indicate that the β-1,3-glucans are very attractive and useful materials not only in biotechnology but also in nanotechnology. These unique properties of the β-1,3-glucans undoubtedly originate from their inherent, very strong helix-forming character which has never been observed for other polysaccharides.

DOI： 10.1039/b506673p

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

DOI： 10.1039/b506148b

Language：English  

DOI： 10.1021/;a0515524

Other Link： http://dx.doi.org/10.1021/la0515524

Language：English  

DOI： 10.1016/j.scriptamat.2005.04.044

Other Link： http://dx.doi.org/10.1016/j.scriptamat.2005.04.044

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

DOI： 10.1016/j.scriptamat.2005.04.044

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

DOI： 10.1016/j.msea.2005.05.056

Language：English  

DOI： 10.1002/adma.200500069

Other Link： http://dx.doi.org/10.1002/adma.200500069

Language：English  

DOI： 10.1140/epjd/e2005-00123-8

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

DOI： 10.1002/adma.200500069

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

Fabrication and structural characterization of TiO nanoparticle soft-landed on substrate by the magnetron sputtering-gas aggregation method
S. Tanemura K. Kajino L. Miao S. Koide M. Tanemura S. Toh K. Kaneko M. Mori
European Physical Journal D
Vol.34 1-3(2005)pp.79-82.

DOI： 10.1140/epjd/e2005-00123-8

Other Link： http://dx.doi.org/10.1140/epjd/e2005-00123-8

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

Other Link： http://dx.doi.org/10.1142/S0217979205031730

Language：English  

DOI： 10.1111/j.1551-2916.2005.00257.x

Other Link： http://dx.doi.org/10.1111/j.1551-2916.2005.00257.x

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

DOI： 10.1111/j.1551-2916.2005.00257.x

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

DOI： 10.1016/j.scriptamat.2005.03.007

Language：English  

DOI： 10.1016/j.apsusc.2004.10.098

Other Link： http://dx.doi.org/10.1016/j.apsusc.2004.10.098

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

DOI： 10.1016/j.apsusc.2004.10.098

Language：English  

DOI： 10.1021/ja044168m

Other Link： http://dx.doi.org/10.1021/ja044168m

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

We have found that single-chain schizophyllan and curdlan (s-SPG and s-curdlan, respectively) can dissolve as-grown and cut single-walled carbon nanotubes (ag-SWNTs and c-SWNTs, respectively) in aqueous solution. The vis-NIR spectra of the composites suggest that c-SWNTs are dissolved as a bundle, whereas ag-SWNTs exist as one or only a few pieces in the tubular hollow constructed by the helical structure inherent to these β-1,3-glucans. EDX and CLSM measurements and TEM observation established that the distribution map of these polysaccharides overlaps well with the image of SWNTs, indicating that these two components form a composite. Very interestingly, when c-SWNTs were dissolved with the aid of s-SPG or s-curdlan in water, a clear periodical structure with inclined stripes, as detected by AFM, appeared on the fibrous composite surface. Because this periodical structure has never been recognized for the composites with other water-soluble polymers, one can regard that s-SPG or s-curdlan wraps c-SWNTs constructing a helically twined structure. High-resolution TEM observation of an ag-SWNTs/ s-SPG composite gave a clearer image in that two s-SPG chains twine one ag-SWNT and the helical motif is right-handed. When this sample was subjected to the AFM measurement, the composite showed the 2-3 nm height. This height implies that one piece of ag-SWNT is included in the s-SPGs helical structure. As a summary, it has been established that β-1,3-glucans such as s-SPG and s-curdlan not only dissolve SWNTs but also create a novel superstructure on the surface.

DOI： 10.1021/ja044168m

Language：English  

DOI： 10.1016/j.diamond.2005.01.003

Other Link： http://dx.doi.org/10.1016/j.diamond.2005.01.003

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

DOI： 10.1016/j.diamond.2004.12.008

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

DOI： 10.1021/la047070u

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

DOI： 10.1016/j.diamond.2005.01.003

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

DOI： 10.1002/anie.200462810

Language：English  

DOI： 10.1021/la047070u

Other Link： http://dx.doi.org/10.1021/la047070u

Language：English  

Language：English  

DOI： 10.1063/1.1861115

Language：English  

DOI： 10.1016/B978-008044504-5/50053-2

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

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

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

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

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

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

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

Superconducting MgB₂ films were prepared on differently oriented α-Al₂O₃ substrates, C- and R-planes, which yielded superconducting transition temperatures of about 28 K. The electric resistivity of the MgB₂ film deposited on an R-plane substrate is 300 μΩ cm, six times larger than that on a C-plane substrate, 50 μΩ cm. To understand these differences in the electrical properties, various transmission electron microscopes were used to carry out a structural and the compositional analysis. It was shown from selected-area electron diffraction patterns that the microstructure consists of a mixture of columnar MgB₂ grains and amorphous phases in the case of the R-plane specimen, while no amorphous phase was present in the case of the C-plane specimen.

DOI： 10.1088/0953-2048/18/1/015

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

DOI： 10.1246/cl.2005.40

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

DOI： 10.1063/1.1861115

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