| 1. |
Kakeru Ninomiya, Kohei Fujino, Kouki Itamoto, Maiko Nishibori, In situ observation on the formation process of LPSO structure in Mg alloy by X-ray absorption spectroscopy, 12th International Conference on Magnesium Alloys and their Applications, 2021.06. |
| 2. |
Kakeru Ninomiya, Yusuke Tamenori, Kazuki Tsuruta, Maiko Nishibori, Local structure analysis of carbon in ferritic steel by C K-edge X-ray absorption fine structure and multiple scattering calculations
, APS March Meeting 2020, 2020.03. |
| 3. |
Maiko Nishibori, Kohei Fujino, Kakeru Ninomiya, Local structure analysis of long-period stacking ordered (LPSO) structure phase-containing Mg alloys by X-ray absorption spectroscopy, APS March Meeting 2020 , 2020.03. |
| 4. |
KANEKO Tomoya, NISHIBORI Maiko, Surface modification of functional ceramics by polymer-brush and its properties
, Cross Straits Symposium on Energy and Environmental Science and Technology, 2019.11. |
| 5. |
Hirotaka Hara, Ruiping Wang, Guang-Xu Zheng, Maiko Nishibori, Chao-Nan Xu, Characteristic Improvement of Multi-Piezo Material by Control of Crystal Structure, The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13), 2019.10. |
| 6. |
Maiko Nishibori, Kohei Nosue, Ayumi Hamada, Yuko Konishi, Atsushi Takahara, Fabrication of polymer-brush modified Ba-Ti oxide / poly(vinylidene fluoride) nanocomposites film, The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13), 2019.10. |
| 7. |
Maiko Nishibori, Kohei Nosue, Ayumi Hamada, Yuko Konishi, Atsushi Takahara, Fabrication of polymer-brush modified Ba-Ti oxide/poly(vinylidene fluoride) nanocomposites thin film, APS March Meeting, 2019.03. |
| 8. |
Kakeru Ninomiya, Kazutaka Kamitani, Yusuke Tamenori, Kazuki Tsuruta, Toshihiro Okajima, Daisuke Yoshimura, Hideaki Sawada, Keisuke Kinoshita, Maiko Nishibori, Dynamic behavior of carbon in steel by using soft X-ray absorption spectroscopy and spectrum simulation, APS March Meeting, 2019.03. |
| 9. |
Akira Miyano, Maiko Nishibori, Ayumi Hamada, Kazutaka Kamitani, Atsushi Takahara, Synthesis of Polymer Brushes Grafted Nanodiamond Particles, SPSJ International Polymer Conference, 2018.12. |
| 10. |
KANEKO Tomoya, HAMADA Ayumi, TAKAHARA Atsushi, NISHIBORI Maiko
, Structural pattern formation of composite particles with CeO¬¬¬2 and polymer brushes, Cross Straits Symposium on Energy and Environmental Science and Technology, 2018.11. |
| 11. |
Ayumi Hamada, Maiko Nishibori, Yuko Konishi, Kazutaka Kamitani, Tomoyasu Hirai, Ken Kojio, Atsushi Takahara, Structural pattern formation of composite particles with CeO2 and polymer brushes, APS March Meeting 2018, 2018.03. |
| 12. |
Maiko Nishibori, Kazutaka Kamitani, Ayumi Hamada, Yuko Konishi, Tomoyasu Hirai, Atsushi Takahara, Selective Evaluation of Molecular Aggregation Structure in Soft Materials using Wide-Range of X-ray Energy, APS March Meeting 2018, 2018.03. |
| 13. |
Suematsu Koichi, Sun Yongjiao, Ken Watanabe, Maiko Nishibori, Kengo Shimanoe, Analysis of Oxygen Adsorption on Surface of Metal Oxide to Understand Sensing Mechanism of Semiconductor Gas Sensors, 12th Asian Conference on Chemical Sensors, 2017.11. |
| 14. |
Maiko Nishibori, Tomomi Takahashi, Yuki Ushio, Koichi Suematsu, Kazutaka Kamitani, Tomoyasu Hirai, Atsushi Takahara
, Characterization of polymer/inorganic-nanoparticles composite by using small-angle x-ray scattering and x-ray absorption spectroscopy
, ACS Fall 2017, 2017.08. |
| 15. |
Ayumi Hamada, Maiko Nishibori, Yuko Konishi, Kazutaka Kamitani, Tomoyasu Hirai, Ken Kojio, Atsushi Takahara
, Fabrication and characterization of hybrid particles with CeO2 core and polymer brushes
, ACS Fall 2017, 2017.08. |
| 16. |
Kazutaka Kamitani, Maiko Nishibori, Yuko Konishi, Ayumi Hamada, Tomoyasu Hirai, Ken Kojio, Atsushi Takahara
, Characterization of Polymer Thin Film by Tender X-Ray Reflectivity, ACS Fall 2017, 2017.08. |
| 17. |
Ken Watanabe, Tokiharu Oyama, Suematsu Koichi, Maiko Nishibori, Kengo Shimanoe, New detection mode based on metal oxide MEMS gas sensors, 8th International Conference on Electroceramics (ICE2017), 2017.05. |
| 18. |
Kengo Shimanoe, N. Ma, T. Oyama, H. Uchino, Maiko Nishibori, Ken Watanabe, Material Design of Semiconductor Gas Sensors for Practical Use, 2016 MRS Fall Meeting & Exhibit, 2016.11. |
| 19. |
H. Uchino, T. Mizukami, Ken Watanabe, Maiko Nishibori, Kengo Shimanoe, Sensor Response Under Humid Condition of Surface Modified SnO2 with Zr4+, PRiME2016, 2016.10. |
| 20. |
Kengo Shimanoe, N. Ma, T. Oyama, Maiko Nishibori, Ken Watanabe, High Performance of SnO2-Based Gas Sensor by Introducing Perovskite-Type Oxides, PRiME2016, 2016.10. |
| 21. |
Akane Doi, Maiko Nishibori, Kengo Shimanoe, Kenji Obata, Shigenori Matsushima, Effect of adding an additional element for microstructure of magnesium ferrite, ICC6, 2016.08. |
| 22. |
H. RUAN1, M. NISHIBORI1, T. ITO, Y. SADAOKA, K. SHIMANOE, Y. TERAOKA, Sensing of Soot Oxidation Using Catalytic-combustion Type Sensor with Ag-supported Catalyst, IMCS2016, 2016.07. |
| 23. |
Tokiharu OYAMA, Nan MA, Koichi Suematsu, Maiko Nishibori, Kengo Shimanoe, Sensing Properties of Memstype Gas Sensor Using Sno2based Materials, IMCS2016, 2016.07. |
| 24. |
M. Nishibori, H. Wakita, K. Shimanoe, Y. Sadaoka, Detection of Paticulate Matter by using limiting current-type oxygen sensor, CIMTEC2016, 2016.06. |
| 25. |
Kengo Shimanoe, Ma Nan, Ryohei Kato, Maiko Nishibori, New Semiconductor Gas Sensor Based on Enhancing Oxygen Partial Pressure, CIMTEC2016, 2016.06. |
| 26. |
T. Uchiyama, K. Kamitani, K. Kato, Maiko Nishibori, Reduction process of Pd-containing La-Fe perovskite-type oxides by in-situ Dispersive X-ray absorption spectroscopy, 16th International Conference on X-Ray Absorption Fine Structure, XAFS 2015, 2016.01, Reduction process of Pd-containing La-Fe perovskites was investigated by in-situ Pd K-edge dispersive X-ray absorption fine structure as well as mass spectroscopy. The prepared perovskite was characterized by a conventional X-ray absorption spectra to confirm the incorporation of cationic Pd into perovskite matrix. Under the reductive atmosphere (5 vol%H2/He), we found the presence of three reduction processes of Pd cations in perovskite structure. The segregation of Pd metal particles was observed from 200-400 oC although the cationic Pd species remained at 700 oC due to the strong metal-support interaction.. |
| 27. |
Maiko Nishibori, Shuhei Matsuo, Noriya Izu, Toshio Itoh, Yasutake Teraoka, Pore structure of alumina supported Pd catalyst for gas sensor application, The 11th International Conference of Pacific Rim Ceramic Societies, 2015.09. |
| 28. |
Maiko Nishibori, Naoki Ankei, Tomoki Uchiyama, 神谷 和孝, Kazuo Kato, Yasutake Teraoka, Relationship between O2 desorption property and bulk/local structure of La-Sr-Co-Fe perovskite-type oxide in atmospheres with varying oxygen partial pressure, The 16th International Conference on X-ray Absorption Fine Structure, 2015.08. |
| 29. |
Tomoki Uchiyama, Maiko Nishibori, Hisahiro Einaga, Yasutake Teraoka, Mechanochemical preparation and local structural analysis of Pd-LaFeO3 solid solutions by Pd K- and L3-edge X-ray absorption spectroscopy, The 16th International Conference on X-ray Absorption Fine Structure, 2015.08. |
| 30. |
Tomoki Uchiyama, Maiko Nishibori, Yasutake Teraoka, Hisahiro Einaga, Mechanochemical synthesis and characterization of LaFe1-xPdxO3 perovskites by Pd K- and L3-edge X-ray Absorption Spectroscopy”, 15th ROC-Japan Joint Symposium on Catalysis, 15th ROC-Japan Joint Symposium on Catalysis, 2015.04. |
| 31. |
Maiko Nishibori, Naoki Ankei, Tomoki Uchiyama, Yasutake Teraoka, Temperature programmed desorption of oxygen from La-Sr-Co-Fe perovskite in atmospheres with varying oxygen partial pressure, 15th ROC-Japan Joint Symposium on Catalysis, 2015.04. |
| 32. |
内山智貴, 西堀 麻衣子, 永長 久寛, 寺岡 靖剛, Mechanochemical synthesis and characterization of Pd-containing La-Fe perovskites by Pd K- and L3-edge X-ray Absorption Spectroscopy, The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014), 2014.08. |
| 33. |
諌山彰大, 西堀 麻衣子, 寺岡 靖剛, 永長 久寛, Effect of Macrostructure of Ag/CeO2 for Combustion Performance of Diesel Particulate Matter, 30th International Japan-Korea Seminar on Ceramics , 2013.11. |
| 34. |
神谷 和孝, 西堀 麻衣子, 寺岡 靖剛, Takeharu Sugiyama, Analysis of Ordered Arrangement of Mono-dispersed SiO2 Particles in Cumulated Film by Small-angle X-ray Scattering Method, 30th International Japan-Korea Seminar on Ceramics , 2013.11. |
| 35. |
松尾秀平, 西堀 麻衣子, 寺岡 靖剛, Hisahiro Einaga, Study on Pore Structure of Alumina Supported Pd Catalyst for Gas Sensor Application, 30th International Japan-Korea Seminar on Ceramics , 2013.11. |
| 36. |
寺岡 靖剛, 西堀 麻衣子, 諌山彰大, 永長 久寛, Importance of macroporous structure in catalytic combustion of diesel particulate matter: effect of particle morphology of CeO2, The 6th Asia-Pacific Congress on Catalysis, 2013.10. |
| 37. |
Tomoki UCHIYAMA, 西堀 麻衣子, 寺岡 靖剛, 永長 久寛, Characterization of mechanochemically synthesized Pd-containing perovskites, The 16th International Symposium on Relations between Homogeneous and Heterogeneous Catalysis, 2013.08. |
| 38. |
W. Shin, Maiko Nishibori, N. Izu, T. Itoh, I. Matsubara, N. Watanabe, T. Kasuga, Thermoelectric gas sensors of different catalyst oxides and heater metals, 3rd International Congress on Ceramics, ICC3, 2011.08, Thermoelectric hydrogen sensors with different catalyst oxides, Pt-Al 2O3 and Pt-CeO2 have been prepared, and their gas sensing properties are investigated in the air and N2 flow. In air, the relationship between the sensor output and the gas concentration is a linear indicating the combustion only depends on the gas concentration in air. In N2 atmosphere, where the oxygen gas content of N2 source cylinder is below the industrial standard of 50 ppm, the sensor output shows also a linear relationship with the gas concentration, but depressed signal level. The microheater of the thermoelectric sensor has been prepared by the co-sputtering of tungsten and platinum to enhance the high temperature stability. The temperature coefficients of the Pt-W alloy multilayer heater were lowered to a half of the level of Pt.. |
| 39. |
Ichiro Matsubara, Toshio Itoh, Woosuck Shin, Noriya Izu, Maiko Nishibori, Characterization of intercalation type organic/MoO3 nanohybrids and their VOC sensing properties, Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures, 2008.01, The organic/MoO3 hybrid sensors show a distinct response to aldehyde gases, formaldehyde and acetaldehyde, by changing the electrical resistance, whereas they show almost no response to other VOCs. The organic/MoO3 hybrids have a potential for selective VOC detection because the sensing properties of organic/MoO3 hybrids can be controlled by the kind of interlayer organic components. In this study, we have carried out the detail characterization of the interlayer of the organic/MoO3 hybrids as well as the valence of Mo and evaluation of their sensing properties.. |
| 40. |
Noriya Izu, Toshio Itoh, Maiko Nishibori, Woosuck Shin, Ichiro Matsubara, Resistive type sensor using ceria thick film with nano particles, Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures, 2008.01, For gas sensors, not only sensitivity and selectivity but also fast response speed is very important. We fabricated a restive type gas sensor using ceria (cerium oxide) porous thick film with a particle size of about 100 nm in order to improve the response speed of the sensor. First, we investigated the sensing properties for the change of oxygen partial pressure. The sensor was able to detect the variation of oxygen partial pressure in the wide range from 10-18 Pa to 105 Pa at 873 K. The response time (t 90), which is defined as the time until response changes 90% of the saturated value after a sudden change of oxygen partial pressure, was about 10 ms at 1073 K. Next, we investigated the sensing properties for carbon monoxide. We developed the new sensor having two ceria thick films with and without catalyst layer to give selectivity. The sensor was able to detect carbon monoxide over 330 ppm at 773 K, and t90 was 2 s at 723 K. By using Pt/Al2O3 catalyst, the sensor hardly responded for hydrogen, so it was implied that the sensor had a good selectivity for carbon monoxide.. |
| 41. |
L. F. Houlet, W. Shin, Maiko Nishibori, N. Izu, T. Itoh, I. Matsubara, Safe membrane-releasing process for thermoelectric hydrogen gas sensor, 6th IEEE Conference on SENSORS, IEEE SENSORS 2007, 2007.12, We present here a safe membrane-releasing process in KOH for the fabrication of a high performance freestanding device and the mass production of a single membrane device for the hydrogen gas sensing application. The fabricated devices are thermoelectric hydrogen gas sensors based on the thermoelectric detection of the catalytic hydrogen combustion. The free-standing device has a voltage response 2.7 times higher than the single membrane device. The proposed membrane-releasing process, which combines black wax and a KOH protective polymer coat, shows fabrication yields of 31%, 50% for the free-standing device and 47% for the single-membrane device produced in mass.. |
| 42. |
K. Tajima, W. Shin, Maiko Nishibori, T. Itoh, N. Izu, I. Matsubara, Micro-thermoelectric gas sensor with B- and P-doped SiGe thin film deposited by helicon sputtering, Sensors, Actuators, and Microsystems - 208th Electrochemical Society Meeting, 2006.12, Micro-thermoelectric hydrogen sensor working with the combination of the thermoelectric effect of phosphorus-doped SiGe thin film and the Pt-catalyzed exothermic reaction of hydrogen oxidation has been fabricated. Sensitivity of hydrogen gas of the device was improved by doping the SiGe thermoelectric thin film deposited by helicon sputtering. copyright The Electrochemical Society.. |
| 43. |
Woosuck Shin, Maiko Nishibori, Lionel F. Houlet, Kazuki Tajima, Toshio Itoh, Noriya Izu, Ichiro Matsubara, Robust thermoelectric hydrogen sensors with ceramic catalyst, 16th World Hydrogen Energy Conference 2006, WHEC 2006, 2006.12, Micro-thermoelectric hydrogen sensor (μ-THS) is one of the promising candidates for hydrogen leak alarm system because of its simple structure, its unique and reliable working principle, catalytic combustion and thermoelectric (from heat to electric) conversion, and its sensing performance for wide-range of hydrogen concentrations. Catalyst is of great importance for the reliability in gas sensors. The integration of the catalyst is the key technology to make a sensor of high efficiency and high durability such as long-term stability. By controlling the catalyst preparation, the size, the thickness of the ceramic catalyst and the dispersion of Pt in the catalyst could be controlled. These are closely related not only to sensitivity but also to the long-term stability of the catalyst. We have monitored the performance of the μ-THS with ceramic catalyst over 3 months, to investigate the relation between the device preparation and the stability of the sensor.. |
| 44. |
N. Kawamura, N. Ishimatsu, Maiko Nishibori, Y. Komatsu, H. Maruyama, Ga magnetic polarization in Mn3GaC under high pressure probed by Ga K-edge XMCD, 12th X-ray Absorption Fine Structure International Conference, XAFS12, 2005.12, To study pressure-induced ferromagnetic state in Mn3GaC perovskite, we have performed x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD) spectroscopy at the Ga K-edge under high pressure up to 29.4 GPa at room temperature. Ga K-edge XMCD was observed under pressure ranging from 4.5 to 29.4 GPa and results indicate that the Ga atom is magnetically polarized under high pressure. From the XMCD spectral profile, it is suggested that the pressure-induced ferromagnetic state has a canted ferromagnetic structure.. |
