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Touhei Tetsuya

藤平　哲也

Graduate School of Engineering Science　Department of Systems Innovation, Associate Professor

Education

  • 2001/04 - 2006/03, 京都大学大学院, 工学研究科, 材料工学専攻
  • 1997/04 - 2001/03, Kyoto University, Faculty of Engineering, School of Engineering Science

Research History

  • 2017/04 - Present, 大阪大学大学院, 基礎工学研究科システム創成専攻, 准教授
  • 2011/08 - 2017/03, 東京大学大学院, 工学系研究科総合研究機構, 助教
  • 2007/07 - 2011/08, 東京大学大学院, 工学系研究科総合研究機構, 特任研究員（ナノテクノロジーネットワーク微細構造解析拠点）
  • 2007/04 - 2007/07, 京都大学大学院, 工学研究科, 産学官連携研究員
  • 2006/04 - 2007/03, 京都大学大学院, 工学研究科, 日本学術振興会特別研究員（PD）

Research Areas

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electric/electronic material engineering
  • Nanotechnology/Materials, Metallic materials
  • Nanotechnology/Materials, Inorganic materials

Professional Memberships

  • THE JAPAN SOCIETY OF APPLIED PHYSICS
  • THE JAPANESE SOCIETY OF MICROSCOPY
  • The Ceramic Society of Japan
  • 日本金属学会

Papers

  • Molecular beam homoepitaxy of N-polar AlN: Enabling role of aluminum-assisted surface cleaning, Zexuan Zhang,Yusuke Hayashi,Tetsuya Tohei,Akira Sakai,Vladimir Protasenko,Jashan Singhal,Hideto Miyake,Huili Grace Xing,Debdeep Jena,YongJin Cho, Science Advances, American Association for the Advancement of Science (AAAS), Vol. 8, No. 36, 2022/09/09
  • Versatile Functionality of Four-Terminal TiO2-x Memristive Devices as Artificial Synapses for Neuromorphic Computing, Ryotaro Miyake,Zenya Nagata,Kenta Adachi,Yusuke Hayashi,Tetsuya Tohei,Akira Sakai, ACS APPLIED ELECTRONIC MATERIALS, AMER CHEMICAL SOC, Vol. 4, No. 5, p. 2326-2336, 2022/05
  • Breaking of Thermopower–Conductivity Trade-Off in LaTiO3 Film around Mott Insulator to Metal Transition, Takayoshi Katase,Xinyi He,Terumasa Tadano,Jan M. Tomczak,Takaki Onozato,Keisuke Ide,Bin Feng,Tetsuya Tohei,Hidenori Hiramatsu,Hiromichi Ohta,Yuichi Ikuhara,Hideo Hosono,Toshio Kamiya, Advanced Science, p. 2102097-1-2102097-8, 2021/10
  • Analysis of inverse-piezoelectric-effect-induced lattice deformation in AlGaN/GaN high-electron-mobility transistors by time-resolved synchrotron radiation nanobeam X-ray diffraction, Haruna Shiomi,Akira Ueda,Tetsuya Tohei,Yasuhiko Imai,Takeaki Hamachi,Kazushi Sumitani,Shigeru Kimura,Yuji Ando,Tamotsu Hashizume,Akira Sakai, Applied Physics Express, IOP Publishing, Vol. 14, No. 9, p. 095502-1-095502-6, 2021/09/01
  • Propagation of threading dislocations and effects of Burgers vectors in HVPE-grown GaN bulk crystals on Na-flux-grown GaN substrates, T. Hamachi,T. Tohei,Y. Hayashi,M. Imanishi,S. Usami,Y. Mori,N. Ikarashi,A. Sakai, Journal of Applied Physics, AIP Publishing, Vol. 129, No. 22, p. 225701-225701, 2021/06/14
  • Fabrication of GaO x based crossbar array memristive devices and their resistive switching properties, Mamoru Joko,Yusuke Hayashi,Tetsuya Tohei,Akira Sakai, Japanese Journal of Applied Physics, IOP Publishing, Vol. 59, No. SM, p. SMMC03-SMMC03, 2020/07/01
  • Gate Tuning of Synaptic Functions Based on Oxygen Vacancy Distribution Control in Four- Terminal TiO2−x Memristive Devices, Scientific Reports, Vol. 9, 2019/07
  • Correlation between current leakage and structural properties of threading dislocations in GaN bulk single crystals grown using a Na-flux method, Japanese Journal of Applied Physics, Vol. 58, 2019/05
  • Demonstrative operation of fourterminal memristive devices fabricated on reduced TiO2 single crystals, Scientific Reports, Vol. 9, 2019/02
  • Analysis of Ti valence states in resistive switching regions of a rutile TiO2-x four-terminal memristive device, Kengo Yamaguchi,Shotaro Takeuchi,Tetsuya Tohei,Nobuyuki Ikarashi,Akira Sakai, Japanese Journal of Applied Physics, Japan Society of Applied Physics, Vol. 57, No. 6, 2018/06/01
  • Leakage current analysis for dislocations in Na-flux GaN bulk single crystals by conductive atomic force microscopy, T. Hamachi,S. Takeuchi,T. Tohei,M. Imanishi,M. Imade,Y. Mori,A. Sakai, Journal of Applied Physics, AIP Publishing, Vol. 123, No. 16, p. 161417-161417, 2018/04/28
  • First principles calculation of thermal expansion coefficients of pure and Cr doped alpha-alumina crystals, Tetsuya Tohei,Yuito Watanabe,Hak-Sung Lee,Yuichi Ikuhara, JOURNAL OF APPLIED PHYSICS, AMER INST PHYSICS, Vol. 120, No. 14, 2016/10
  • First principles study of oxygen diffusion in a alpha-alumina {10(1)over-bar1} twin grain boundary, Tetsuya Tohei,Yuito Watanabe,Nobuaki Takahashi,Tsubasa Nakagawa,Naoya Shibata,Yuichi Ikuhara, PHILOSOPHICAL MAGAZINE, TAYLOR & FRANCIS LTD, Vol. 95, No. 35, p. 3985-3999, 2015/12
  • First Principles Calculation of Thermal Expansion of Carbon and Boron Nitrides Based on Quasi-Harmonic Approximation, Tetsuya Tohei,Hak-Sung Lee,Yuichi Ikuhara, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 56, No. 9, p. 1452-1456, 2015/09
  • Double Columnar Structure with a Nanogradient Composite for Increased Oxygen Diffusivity and Reduction Activity, Young-Wan Ju,Junji Hyodo,Atsushi Inoishi,Shintaro Ida,Tetsuya Tohei,Yeong-Gi So,Yuichi Ikuhara,Tatsumi Ishihara, ADVANCED ENERGY MATERIALS, WILEY-V C H VERLAG GMBH, Vol. 4, No. 17, 2014/12
  • Large magnetoelectric coupling in magnetically short-range ordered Bi5Ti3FeO15 film, Hongyang Zhao,Hideo Kimura,Zhenxiang Cheng,Minoru Osada,Jianli Wang,Xiaolin Wang,Shixue Dou,Yan Liu,Jianding Yu,Takao Matsumoto,Tetsuya Tohei,Naoya Shibata,Yuichi Ikuhara, SCIENTIFIC REPORTS, NATURE PUBLISHING GROUP, Vol. 4, 2014/06
  • Fluorine in Shark Teeth: Its Direct Atomic-Resolution Imaging and Strengthening Function, Chunlin Chen,Zhongchang Wang,Mitsuhiro Saito,Tetsuya Tohei,Yoshiro Takano,Yuichi Ikuhara, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, WILEY-V C H VERLAG GMBH, Vol. 53, No. 6, p. 1543-1547, 2014/02
  • A New Layered Iron Arsenide Superconductor: (Ca,Pr)FeAs2, Hiroyuki Yakita,Hiraku Ogino,Tomoyuki Okada,Akiyasu Yamamoto,Kohji Kishio,Tetsuya Tohei,Yuichi Ikuhara,Yoshito Gotoh,Hiroshi Fujihisa,Kunimitsu Kataoka,Hiroshi Eisaki,Jun-ichi Shimoyama, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, AMER CHEMICAL SOC, Vol. 136, No. 3, p. 846-849, 2014/01
  • Multivariate Statistical Characterization of Charged and Uncharged Domain Walls in Multiferroic Hexagonal YMnO3 Single Crystal Visualized by a Spherical Aberration-Corrected STEM, Takao Matsumoto,Ryo Ishikawa,Tetsuya Tohei,Hideo Kimura,Qiwen Yao,Hongyang Zhao,Xiaolin Wang,Dapeng Chen,Zhenxiang Cheng,Naoya Shibata,Yuichi Ikuhara, NANO LETTERS, AMER CHEMICAL SOC, Vol. 13, No. 10, p. 4594-4601, 2013/10
  • Interface atomic structure of LaCuOSe:Mg epitaxial thin film and MgO substrate, Tetsuya Tohei,Teruyasu Mizoguchi,Hidenori Hiramatsu,Hideo Hosono,Yuichi Ikuhara, MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, ELSEVIER SCIENCE BV, Vol. 173, No. 1-3, p. 229-233, 2010/10
  • Direct imaging of doped fluorine in LaFeAsO1-XFX superconductor by atomic scale spectroscopy, Tetsuya Tohei,Teruyasu Mizoguchi,Hidenori Hiramatsu,Yoichi Kamihara,Hideo Hosono,Yuichi Ikuhara, APPLIED PHYSICS LETTERS, AMER INST PHYSICS, Vol. 95, No. 19, 2009/11
  • Geometric ferroelectricity in rare-earth compounds RGaO3 and RInO3, Tetsuya Tohei,Hiroki Moriwake,Hidenobu Murata,Akihide Kuwabara,Ryo Hashimoto,Tomoyuki Yamamoto,Isao Tanaka, PHYSICAL REVIEW B, AMER PHYSICAL SOC, Vol. 79, No. 14, 2009/04
  • Debye temperature and stiffness of carbon and boron nitride polymorphs from first principles calculations, T Tohei,A Kuwabara,F Oba,Tanaka, I, PHYSICAL REVIEW B, AMERICAN PHYSICAL SOC, Vol. 73, No. 6, 2006/02
  • Ab initio lattice dynamics and phase transformations of ZrO2, A Kuwabara,T Tohei,T Yamamoto,Tanaka, I, PHYSICAL REVIEW B, AMER PHYSICAL SOC, Vol. 71, No. 6, 2005/02
  • General rule for displacive phase transitions in perovskite compounds revisited by first principles calculations, T Tohei,A Kuwabara,T Yamamoto,F Oba,Tanaka, I, PHYSICAL REVIEW LETTERS, AMERICAN PHYSICAL SOC, Vol. 94, No. 3, 2005/01
  • Negative magnetocaloric effect at the antiferromagnetic to ferromagnetic transition of Mn3GaC, T Tohei,H Wada,T Kanomata, JOURNAL OF APPLIED PHYSICS, AMER INST PHYSICS, Vol. 94, No. 3, p. 1800-1802, 2003/08
  • Micro- and Nanostructure Analysis of Vapor-Phase-Grown AlN on Face-to-Face Annealed Sputtered AlN/Nanopatterned Sapphire Substrate Templates, Yudai Nakanishi,Yusuke Hayashi,Takeaki Hamachi,Tetsuya Tohei,Yoshikata Nakajima,Shiyu Xiao,Kanako Shojiki,Hideto Miyake,Akira Sakai, Journal of Electronic Materials, Springer Science and Business Media LLC, 2023/03/29
  • Comprehensive analysis of current leakage at individual screw and mixed threading dislocations in freestanding GaN substrates, Takeaki Hamachi,Tetsuya Tohei,Yusuke Hayashi,Masayuki Imanishi,Shigeyoshi Usami,Yusuke Mori,Akira Sakai, Scientific Reports, Springer Science and Business Media LLC, Vol. 13, No. 1, 2023/02/10
  • High-temperature operation of gallium oxide memristors up to 600 K, Kento Sato,Yusuke Hayashi,Naoki Masaoka,Tetsuya Tohei,Akira Sakai, Scientific Reports, Springer Science and Business Media LLC, Vol. 13, No. 1, 2023/01/30
  • Interface engineering of amorphous gallium oxide crossbar array memristors for neuromorphic computing, Naoki Masaoka,Yusuke Hayashi,Tetsuya Tohei,Akira Sakai, Japanese Journal of Applied Physics, IOP Publishing, Vol. 62, No. SC, p. SC1035-SC1035, 2023/01/24
  • Gate-tunable plasticity in artificial synaptic devices based on four-terminal amorphous gallium oxide memristors, Taishi Ikeuchi,Yusuke Hayashi,Tetsuya Tohei,Akira Sakai, Applied Physics Express, IOP Publishing, Vol. 16, No. 1, p. 015509-015509, 2023/01/01
  • Thermal strain analysis considering in-plane anisotropy for sputtered AlN on c- and a-plane sapphire under high-temperature annealing, Yusuke Hayashi,Kenjiro Uesugi,Kanako Shojiki,Tetsuya Tohei,Akira Sakai,Hideto Miyake, AIP Advances, AIP Publishing, Vol. 11, No. 9, p. 095012-095012, 2021/09/01
  • Local piezoelectric properties in Na-flux GaN bulk single crystals, A. Ueda,T. Hamachi,A. Okazaki,S. Takeuchi,T. Tohei,M. Imanishi,M. Imade,Y. Mori,A. Sakai, Journal of Applied Physics, AIP Publishing, Vol. 128, No. 12, p. 125110-125110, 2020/09/28
  • Local current leakage at threading dislocations in GaN bulk single crystals grown by a modified Na-flux method, Japanese Journal of Applied Physics, Vol. 58, 2019/04
  • Quantitative analysis of lattice plane microstructure in the growth direction of a modified Na-flux GaN crystal using nanobeam X-ray diffraction, Kazuki Shida,Nozomi Yamamoto,Tetsuya Tohei,Masayuki Imanishi,Yusuke Mori,Kazushi Sumitani,Yasuhiko Imai,Shigeru Kimura,Akira Sakai, Japanese Journal of Applied Physics, Vol. 58, 2019/04
  • Depth-resolved analysis of lattice distortions in high-Ge-content SiGe/compositionally graded SiGe films using nanobeam x-ray diffraction, Kazuki Shida,Shotaro Takeuchi,Tetsuya Tohei,Yasuhiko Imai,Shigeru Kimura,Andreas Schulze,Matty Caymax,Akira Sakai, Semiconductor Science and Technology, IOP Publishing, Vol. 33, No. 12, p. 124005-124005, 2018/12/01
  • Local electrical and structural analysis for threading dislocations in the modified Na-flux GaN bulk single crystals, T. Hamachi,T. Tohei,M. Imanishi,Y. Mori,A. Sakai, 2018/11
  • Facile Synthesis Route of Au-Ag Nanostructures Soaked in PEG, E. K. Fodjo,A. Canlier,C. Kong,A. Yurtsever,P. L. A. Guillaume,F. T. Patrice,M. Abe,T. Tohei,A. Sakai, Advances in Nanoparticles, 2018/07
  • Inversion domain network stabilization and spinel phase suppression in ZnO, Joshua Hoemke,Eita Tochigi,Tetsuya Tohei,Hidehiro Yoshida,Naoya Shibata,Yuichi Ikuhara,Yoshio Sakka, Journal of the American Ceramic Society, Vol. 101, No. 6, p. 2616-2626, 2018/06
  • Tomographic mapping analysis of lattice distortions in the depth direction of high-Ge-content SiGe films with compositionally graded buffer layers using nanobeam X-ray diffraction, K. Shida,S. Takeuchi,T. Tohei,Y. Imai,S. Kimura,A. Schulze,M. Caymax,A. Sakai, 2018/05
  • Microstructural analysis in the depth direction of a heteroepitaxial AlN thick film grown on a trench-patterned template by nanobeam X-ray diffraction, K. Shida,S. Takeuchi,T. Tohei,H. Miyake,K. Hiramatsu,K. Sumitani,Y. Imai,S. Kimura,A. Sakai, Journal of Applied Physics, AIP Publishing, Vol. 123, No. 16, p. 161563-161563, 2018/04/28
  • Demonstrative operation of four-terminal memristive devices by controlling oxygen vacancy distribution in TiO2-x single crystals, Akira Sakai,Takuma Shimizu,Masato Shimotani,Shotaro Takeuchi,Tetsuya Tohei, 2018/04
  • Nanobeam X-ray diffraction analysis of lattice deformation in thin nano-indented single crystal Si wafers, Y. Mametsuka,S. Takeuchi,T. Tohei,K. Sumitani,Y. Imai,S. Kimura,J. Fujise,T. Ono,A. Sakai, 2018/01
  • Leakage current analysis in GaN-on-GaN p-n diode by conductive atomic force microscopy, S. Mizutani,T. Hamachi,S. Takeuchi,T. Tohei,T. Kachi,S. Sarayama,A. Sakai, 2018/01
  • Valence state analysis of Ti in resistive switching region of rutile TiO2-x single crystals memristor, Kengo Yamaguchi,Shotaro Takeuchi,Takuma Shimizu,Tetsuya Tohei,Nobuyuki Ikarasi,Akira Sakai, 2017/09
  • Inversion domain boundaries in Mn and Al dual-doped ZnO: Atomic structure and electronic properties, Joshua Hoemke,Eita Tochigi,Tetsuya Tohei,Hidehiro Yoshida,Naoya Shibata,Yuichi Ikuhara,Yoshio Sakka, Journal of the American Ceramic Society, Vol. 100, No. 9, p. 4252-4262, 2017/09
  • Ferroelectric domains and phase evolution in (Fe:) KTa <inf>1−x</inf> Nb <inf>x</inf> O <inf>3</inf> crystals, Hongyang Zhao,Kang Cai,Ziran Fan,Zhideng Huang,Zhibin Ma,Tingting Jia,Hideo Kimura,Yuguo Yang,Takao Matsumoto,Tetsuya Tohei,Naoya Shibata,Yuichi Ikuhara, Applied Surface Science, Vol. 413, p. 1-6, 2017/08/15
  • Thermoelectric phase diagram of the SrTiO3-SrNbO3 solid solution system, Yuqiao Zhang,Bin Feng,Hiroyuki Hayashi,Tetsuya Tohei,Isao Tanaka,Yuichi Ikuhara,Hiromichi Ohta, JOURNAL OF APPLIED PHYSICS, AMER INST PHYSICS, Vol. 121, No. 18, 2017/05
  • Reactive Solid-Phase Epitaxy and Electrical Conductivity of Layered Sodium Manganese Oxide Films, Shota Katayama,Takayoshi Katase,Tetsuya Tohei,Bin Feng,Yuichi Ikuhara,Hiromichi Ohta, CRYSTAL GROWTH & DESIGN, AMER CHEMICAL SOC, Vol. 17, No. 4, p. 1849-1853, 2017/04
  • A Novel Class of Multiferroic Material, Bi4Ti3O12 center dot nBiFeO(3) with Localized Magnetic Ordering Evaluated from Their Single Crystals, Hongyang Zhao,Kang Cai,Zhenxiang Cheng,Tingting Jia,Hideo Kimura,Zhibin Ma,Qiuming Fu,Zhideng Huang,Takao Matsumoto,Tetsuya Tohei,Naoya Shibata,Yuichi Ikuhara, ADVANCED ELECTRONIC MATERIALS, WILEY-BLACKWELL, Vol. 3, No. 1, 2017/01
  • Atomic structures of a liquid-phase bonded metal/nitride heterointerface, Akihito Kumamoto,Naoya Shibata,Kei-ichiro Nayuki,Tetsuya Tohei,Nobuyuki Terasaki,Yoshiyuki Nagatomo,Toshiyuki Nagase,Kazuhiro Akiyama,Yoshirou Kuromitsu,Yuichi Ikuhara, SCIENTIFIC REPORTS, NATURE PUBLISHING GROUP, Vol. 6, 2016/03
  • Atom-resolved STEM-EDS Mapping of a Liquid-phase Bonded Metal/Nitride Heterointerface, Kumamoto Akihito,Shibata Naoya,Nayuki Kei-ichiro,Tohei Tetsuya,Ikuhara Yuichi,Terasaki Nobuyuki,Nagatomo Yoshiyuki,Nagase Toshiyuki,Akiyama Kazuhiro,Kuromitsu Yoshirou, Materia Japan, The Japan Institute of Metals and Materials, Vol. 55, No. 12, p. 611-611, 2016
  • Microstructures and improved J(c)-H characteristics of Cl-containing YBCO thin films prepared by the fluorine-free MOD method, Takanori Motoki,Jun-ichi Shimoyama,Hiraku Ogino,Kohji Kishio,Jiyoung Roh,Tetsuya Tohei,Yuichi Ikuhara,Shigeru Horii,Toshiya Doi,Genki Honda,Tatsuoki Nagaishi, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, IOP PUBLISHING LTD, Vol. 29, No. 1, 2016/01
  • Solid-Phase Epitaxial Growth of A-Site-Ordered Perovskite Sr4-xErxCo4O12-delta: A Room Temperature Ferrimagnetic p-Type Semiconductor, Takayoshi Katase,Hidefumi Takahashi,Tetsuya Tohei,Yuki Suzuki,Michihiko Yamanouchi,Yuichi Ikuhara,Ichiro Terasaki,Hiromichi Ohta, ADVANCED ELECTRONIC MATERIALS, WILEY-BLACKWELL, Vol. 1, No. 12, 2015/12
  • Room-Temperature-Protonation-Driven On-Demand Metal-Insulator Conversion of a Transition Metal Oxide, Takayoshi Katase,Kenji Endo,Tetsuya Tohei,Yuichi Ikuhara,Hiromichi Ohta, ADVANCED ELECTRONIC MATERIALS, WILEY-BLACKWELL, Vol. 1, No. 7, 2015/07
  • Phase Boundary Structure of LixFePO4 Cathode Material Revealed by Atomic-Resolution Scanning Transmission Electron Microscopy, Akiho Nakamura,Sho Furutsuki,Shin-ichi Nishimura,Tetsuya Tohei,Yukio Sato,Naoya Shibata,Atsuo Yamada,Yuichi Ikuhara, CHEMISTRY OF MATERIALS, AMER CHEMICAL SOC, Vol. 26, No. 21, p. 6178-6184, 2014/11
  • Titanium enrichment and strontium depletion near edge dislocation in strontium titanate [001]/(110) low-angle tilt grain boundary, K. Takehara,Y. Sato,T. Tohei,N. Shibata,Y. Ikuhara, JOURNAL OF MATERIALS SCIENCE, SPRINGER, Vol. 49, No. 11, p. 3962-3969, 2014/06
  • Synthesis of string-bean-like anisotropic titania nanoparticles with basic amino acids, Junzheng Wang,John K. Katahara,Akihito Kumamoto,Tetsuya Tohei,Ayae Sugawara-Narutaki,Atsushi Shimojima,Tatsuya Okubo, RSC ADVANCES, ROYAL SOC CHEMISTRY, Vol. 4, No. 18, p. 9233-9235, 2014
  • Determination of Exact Positions of Individual Tungsten Atoms in Unisize Tungsten Oxide Clusters Supported on Carbon Substrate by HAADF-STEM Observation, Hisato Yasumatsu,Tetsuya Tohei,Yuichi Ikuhara, JOURNAL OF PHYSICAL CHEMISTRY C, AMER CHEMICAL SOC, Vol. 118, No. 3, p. 1706-1711, 2014/01
  • First principles calculation of dopant solution energy in HfO2 polymorphs, M. Saitoh,T. Mizoguchi,T. Tohei,Y. Ikuhara, JOURNAL OF APPLIED PHYSICS, AMER INST PHYSICS, Vol. 112, No. 8, 2012/10
  • Nanowire of hexagonal gallium oxynitride: Direct observation of its stacking disorder and its long nanowire growth, Yuji Masubuchi,Ryohei Yamaoka,Tetsuya Tohei,Teruyasu Mizoguchi,Yuichi Ikuhara,Shinichi Kikkawa, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, ELSEVIER SCI LTD, Vol. 32, No. 9, p. 1989-1993, 2012/07
  • Chain-like nanostructures from anisotropic self-assembly of semiconducting metal oxide nanoparticles with a block copolymer, Junzheng Wang,Suminto Winardi,Ayae Sugawara-Narutaki,Akihito Kumamoto,Tetsuya Tohei,Atsushi Shimojima,Tatsuya Okubo, CHEMICAL COMMUNICATIONS, ROYAL SOC CHEMISTRY, Vol. 48, No. 90, p. 11115-11117, 2012
  • First-principles Calculations of the Phase Transition in CaTiO3 under Negative Static Pressure, Hiroki Moriwake,Craig A. J. Fisher,Akihide Kuwabara,Tetsuya Tohei,Isao Tanaka, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, KOREAN PHYSICAL SOC, Vol. 59, No. 3, p. 2497-2502, 2011/09
  • A new iron pnictide oxide (Fe2As2)(Ca-5(Mg, Ti)(4)O-y) and a new phase in the Fe-As-Ca-Mg-Ti-O system, Hiraku Ogino,Yasuaki Shimizu,Naoto Kawaguchi,Kohji Kishio,Jun-ichi Shimoyama,Tetsuya Tohei,Yuichi Ikuhara, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, IOP PUBLISHING LTD, Vol. 24, No. 8, 2011/08
  • TEM observation of liquid-phase bonded aluminum-silicon/aluminum nitride hetero interface, Christine Marie Montesa,Naoya Shibata,Tetsuya Tohei,Yuichi Ikuhara, JOURNAL OF MATERIALS SCIENCE, SPRINGER, Vol. 46, No. 12, p. 4392-4396, 2011/06
  • Structures of a Sigma=9, [110]/{221} symmetrical tilt grain boundary in SrTiO3, T. Mitsuma,T. Tohei,N. Shibata,T. Mizoguchi,T. Yamamoto,Y. Ikuhara, JOURNAL OF MATERIALS SCIENCE, SPRINGER, Vol. 46, No. 12, p. 4162-4168, 2011/06
  • A new homologous series of iron pnictide oxide superconductors (Fe2As2)(Can+2(Al, Ti)(n)O-y) (n=2, 3, 4), Hiraku Ogino,Kenji Machida,Akiyasu Yamamoto,Kohji Kishio,Jun-ichi Shimoyama,Tetsuya Tohei,Yuichi Ikuhara, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, IOP PUBLISHING LTD, Vol. 23, No. 11, 2010/11
  • Cr diffusion in alpha-Al2O3: Secondary ion mass spectroscopy and first-principles study, Nobuaki Takahashi,Teruyasu Mizoguchi,Tsubasa Nakagawa,Tetsuya Tohei,Isao Sakaguchi,Akihide Kuwabara,Naoya Shibata,Takahisa Yamamoto,Naoki Ohashi,Yuichi Ikuhara, PHYSICAL REVIEW B, AMER PHYSICAL SOC, Vol. 82, No. 17, 2010/11
  • Origins of Hole Doping and Relevant Optoelectronic Properties of Wide Gap p-Type Semiconductor, LaCuOSe, Hidenori Hiramatsu,Toshio Kamiya,Tetsuya Tohei,Eiji Ikenaga,Teruyasu Mizoguchi,Yuichi Ikuhara,Keisuke Kobayashi,Hideo Hosono, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, AMER CHEMICAL SOC, Vol. 132, No. 42, p. 15060-15067, 2010/10
  • Application of coincidence of reciprocal lattice point model to metal/sapphire hetero interfaces, Christine Marie Montesa,Naoya Shibata,Tetsuya Tohei,Kazuhiro Akiyama,Yoshirou Kuromitsu,Yuichi Ikuhara, MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, ELSEVIER SCIENCE BV, Vol. 173, No. 1-3, p. 234-238, 2010/10
  • Homologous series of iron pnictide oxide superconductors (Fe2As2)x[Can+1(Sc,Ti)(n)O-y] (n=3,4,5) with extremely thick blocking layers, Hiraku Ogino,Shinya Sato,Kohji Kishio,Jun-ichi Shimoyama,Tetsuya Tohei,Yuichi Ikuhara, APPLIED PHYSICS LETTERS, AMER INST PHYSICS, Vol. 97, No. 7, 2010/08
  • First Principles Calculations of Vacancy Formation Energies in Sigma 13 Pyramidal Twin Grain Boundary of alpha-Al2O3, Nobuaki Takahashi,Teruyasu Mizoguchi,Tetsuya Tohei,Kaoru Nakamura,Tsubasa Nakagawa,Naoya Shibata,Takahisa Yamamoto,Yuichi Ikuhara, MATERIALS TRANSACTIONS, JAPAN INST METALS, Vol. 50, No. 5, p. 1019-1022, 2009/05
  • Square-shape magnetocaloric effect in Mn3GaC, R Burriel,L Tocado,E Palacios,T Tohei,H Wada, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, ELSEVIER SCIENCE BV, Vol. 290, p. 715-718, 2005/04
  • Change in the character of magnetocaloric effect with Ni substitution in Ho(Co1-xNix)(2), T Tohei,H Wada, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, ELSEVIER SCIENCE BV, Vol. 280, No. 1, p. 101-107, 2004/09
  • Large magnetocaloric effect of Mn3-xCoxGaC, T. Tohei,H. Wada,T. Kanomata, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, ELSEVIER SCIENCE BV, Vol. 272, p. E585-E586, 2004/05
  • Relativistic multiplet calculations of absorption spectra for rare-earth-based solid-state laser materials, K Fujimura,T Tohei,T Ishii,K Ogasawara,Tanaka, I,H Adachi, PRICM 4: FORTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, VOLS I AND II, JAPAN INST METALS, p. 583-585, 2001

Misc.

  • In situ time-resolved synchrotron radiation nanobeam X-ray diffraction analysis of inverse-piezoelectric-effect-induced lattice deformation in AlGaN/GaN high-electron-mobility transistors, Tetsuya Tohei,Yasuhiko Imai,Akira Saka, SPring-8 /SACLA Research Frontiers 2021, p. 40-41, 2022/08
  • Analysis of local strain fields around individual threading dislocations in HVPE-GaN bulk crystals by using nanobeam X-Ray diffraction, 濱地威明,藤平哲也,林侑介,宇佐美茂佳,今西正幸,森勇介,隅谷和嗣,今井康彦,木村滋,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 68th, 2021
  • Depth-resolved tomographic analysis on thick AlN films grown on NPSS using nanobeam X-ray diffraction, 山本望,林侑介,濱地威明,中西悠太,藤平哲也,隅谷和嗣,今井康彦,木村滋,正直花奈子,三宅秀人,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 68th, 2021
  • Gate-controlled modulation of synaptic properties in 4-terminal planar TiO<sub>2-x</sub> memristive devices, 安達健太,林侑介,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 68th, 2021
  • Development and resistive switching properties of four-terminal planer amorphous GaO<sub>x</sub> memristive devices, 池内太志,林侑介,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 68th, 2021
  • Operand analysis of local piezoelectric lattice deformation in AlGaN/GaN HEMT devices by synchrotron radiation nanobeam X-ray diffraction, 塩見春奈,嶋田章宏,藤平哲也,林侑介,金木奨太,橋詰保,今井康彦,隅谷和嗣,木村滋,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 68th, 2021
  • Structure analysis of OVPE-grown GaN crystals by using nanobeam X-ray diffraction, 栗谷淳,藤平哲也,濱地威明,林侑介,滝野淳一,隅智亮,宇佐美茂佳,今西正幸,森勇介,隅谷和嗣,今井康彦,木村滋,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 68th, 2021
  • Crystalline microstructure and electric property of four-terminals oxide memristors, 藤平哲也,三宅亮太郎,谷口奈穂,上甲守治,林侑介,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 68th, 2021
  • Atomic Scale Mechanism of Novel Oxide-based Memristor and Fabrication of Diversified Synaptic Device, 藤平哲也,酒井朗, 村田学術振興財団年報, No. 34, 2020
  • First-principles analysis of oxygen vacancy behavior in rutile TiO<sub>2</sub> under external electric fields, 井阪健,藤平哲也,林侑介,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 67th, 2020
  • Thermal Strain Analysis on High-Temperature-Annealed Sputtered AlN, 林侑介,上杉謙次郎,正直花奈子,三宅秀人,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 67th, 2020
  • Investigation of morphology and current leakage properties for individual threading dislocations in a HVPE-GaN bulk single crystal grown on a Na-flux-GaN crystal, 濱地威明,藤平哲也,林侑介,今西正幸,森勇介,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 67th, 2020
  • Depth-resolved tomographic analysis of high-Ge-content SiGe/compositionally graded SiGe/Si stacked structure using nanobeam X-ray diffraction, 志田和己,藤平哲也,林侑介,隅谷和嗣,今井康彦,木村滋,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 67th, 2020
  • Implementation of Pavlovian conditioning in 4-terminal planar TiO<sub>2-x</sub> memristive devices, 三宅亮太郎,林侑介,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 67th, 2020
  • Nano-scale structure analysis of bulk GaN crystals grown by OVPE method, 栗谷淳,藤平哲也,濱地威明,林侑介,滝野淳一,隅智亮,今西正幸,森勇介,隅谷和嗣,今井康彦,木村滋,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Polarity Determination Using Electron Diffraction for -c/+c AlN Films Fabricated by Sputtering and High-Temperature Annealing, 林侑介,野本健斗,濱地威明,藤平哲也,三宅秀人,五十嵐信行,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Operand observation of local piezoelectric lattice deformation in AlGaN/GaN HEMT devices by synchrotron radiation nanobeam X-ray diffraction, 嶋田章宏,塩見春奈,藤平哲也,林侑介,金木奨太,橋詰保,今井康彦,隅谷和嗣,木村滋,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Implementation of STP/LTP based on 2D control of oxygen vacancy distribution in 4-terminal planar TiO<sub>2-x</sub> memristive device, 安達健太,三宅亮太郎,林侑介,藤平哲也,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Analysis for three-dimensional propagation behaviors of a and a + c types threading dislocations in HVPE-grown GaN bulk crystals, 濱地威明,藤平哲也,林侑介,今西正幸,森勇介,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Microstructure analysis of thick AlN films grown with sputter-deposited annealed AlN templates on nano-patterned sapphire substrates, 山本望,濱地威明,林侑介,藤平哲也,三宅秀人,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Correlation between three-dimensional morphology and Burgers vector of threading dislocations in GaN bulk crystals grown by HVPE methods, 濱地威明,藤平哲也,林侑介,今西正幸,森勇介,五十嵐信行,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Resistive switching and synaptic properties of amorphous GaO<sub>x</sub> memristive devices, 上甲守治,池内太志,林侑介,藤平哲也,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 81st, 2020
  • Atomic-Resolution Imaging of Shark Teeth and Strengthening Function of Fluorine, Tetsuya Tohei,Yoshiro Takano,Yuichi Ikuhara, CERAMICS JAPAN, Vol. 54, No. 9, p. 642-645, 2019/09
  • 低消費電力人工シナプス素子開発を目指した酸化物メモリスタ材料の原子・電子構造解析, 藤平哲也,酒井朗,竹内正太郎,井阪健,五十嵐信行, 名古屋大学電子光学研究のあゆみ, No. 30, 2019
  • ドナー密度分布制御型メモリスタ素子における抵抗変化機構の有限要素法シミュレーション, 永田善也,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 66th, 2019
  • 放射光ナノビームX線回折による窒化物半導体HEMTデバイスにおける圧電応答局所格子変形の直接観測, 植田瑛,藤平哲也,安藤祐次,橋詰保,今井康彦,隅谷和嗣,木村滋,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 66th, 2019
  • TiO<sub>2-x</sub>エピタキシャル薄膜を用いた4端子メモリスタ素子の抵抗変化特性, 三宅亮太郎,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 66th, 2019
  • 放射光ナノビームX線回折を用いた半導体材料・デバイスの構造解析, 酒井朗,志田和己,植田瑛,藤平哲也,今井康彦,隅谷和嗣,木村滋, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 66th, 2019
  • 放射光ナノビームX線回折による窒化物半導体HEMTデバイスにおける圧電応答局所格子変形ダイナミクスの観測, 植田瑛,藤平哲也,安藤祐次,橋詰保,今井康彦,隅谷和嗣,木村滋,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 66th, 2019
  • NaフラックスGaNバルク単結晶の単独転位における漏れ電流特性とバーガースベクトルの解析, 濱地威明,藤平哲也,今西正幸,森勇介,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 66th, 2019
  • OVPE法によるホモエピタキシャルGaN厚膜の欠陥構造評価, 真鍋海希,藤平哲也,滝野淳一,滝野淳一,隅智亮,今西正幸,森勇介,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 66th, 2019
  • GaO<sub>x</sub>を用いたクロスバーアレイメモリスタの開発と抵抗変化特性, 上甲守治,林侑介,藤平哲也,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 80th, 2019
  • ドナー密度分布制御型メモリスタ素子における抵抗変化機構の有限要素法シミュレーション, 永田善也,藤平哲也,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 80th, 2019
  • 組成傾斜層を有するSi基板上高Ge組成SiGe膜の深さ分解ナノビームX線回折評価, 志田和己,藤平哲也,林侑介,隅谷和嗣,今井康彦,木村滋,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 80th, 2019
  • 4端子TiO<sub>2-x</sub>薄膜メモリスタ素子によるシナプス特性の実装, 三宅亮太郎,林侑介,藤平哲也,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 80th, 2019
  • ハイドライド気相成長GaNバルク単結晶の単独貫通転位における漏れ電流評価, 濱地威明,藤元聖人,藤平哲也,林侑介,今西正幸,森勇介,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 80th, 2019
  • 窒化物半導体中の格子欠陥が生み出す特異構造の3次元解析, 酒井朗,志田和己,竹内正太郎,藤平哲也,今井康彦,木村滋, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 65th, 2018
  • ナノビームX線回折法を用いた組成傾斜層を有する高Ge組成SiGe膜の結晶深さ方向格子面微細構造トモグラフィック解析, 志田和己,竹内正太郎,藤平哲也,今井康彦,木村滋,SCHULZE Andreas,CAYMAX Matty,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 65th, 2018
  • 酸素空孔分布制御型4端子メモリスタ素子における抵抗変化機構の有限要素法シミュレーション, 永田善也,清水拓磨,竹内正太郎,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 65th, 2018
  • 酸素空孔分布制御型4端子メモリスタ素子の抵抗変化特性精密制御, 清水拓磨,永田善也,竹内正太郎,藤平哲也,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 65th, 2018
  • 改良型NaフラックスGaN単結晶内の単独転位における漏れ電流特性評価, 濱地威明,竹内正太郎,藤平哲也,今西正幸,今出完,森勇介,酒井朗, 応用物理学会春季学術講演会講演予稿集(CD-ROM), Vol. 65th, 2018
  • 改良型NaフラックスGaN単結晶内単独転位の漏れ電流特性解析, 濱地威明,藤平哲也,今西正幸,森勇介,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 79th, 2018
  • ナノビームX線回折法による改良型NaフラックスGaNバルク単結晶の深さ方向結晶構造解析, 志田和己,山本望,藤平哲也,今西正幸,森勇介,隅谷和嗣,今井康彦,木村滋,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 79th, 2018
  • Development of Four Terminal Memristive Devices for Expressing Hetero Synaptic Functions in Neuromorphic Computing, 酒井朗,竹内正太郎,藤平哲也, 村田学術振興財団年報, No. 32, 2018
  • 酸化物セラミックス粒界原子拡散の第一原理理論解析, 藤平哲也, 生産と技術, Vol. 70, No. 1, p. 109-112, 2018/01
  • 原子分解能分析電子顕微鏡法を用いた金属／窒化物ヘテロ界面の原子レベル構造解析, 熊本明仁,柴田直哉,藤平哲也,幾原雄一, 日本結晶学会誌, Vol. 59, p. 246-251, 2017/05
  • 4端子TiO<sub>2</sub>単結晶メモリスタの抵抗変化特性, 清水拓磨,竹内正太郎,藤平哲也,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 78th, 2017
  • ルチル型TiO<sub>2</sub>単結晶微細メモリスタ素子における抵抗変化領域のTEM微構造解析, 山口賢吾,村上弘弥,清水拓磨,竹内正太郎,藤平哲也,酒井朗, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 78th, 2017
  • B11-O-01Atomic-Scale STEM Characterization of Grain Boundaries in Oxides, Yuichi Ikuhara,Ryo Ishikawa,Tsubasa Nakagawa,Eita Tochigi,Tetsuya Tohei,Naoya Shibata, Microscopy, Oxford University Press ({OUP}), Vol. 64, No. suppl 1, 2015/11
  • (Ca,RE)‐Fe‐As系新規層状化合物の合成と超伝導特性, 焼田裕之,荻野拓,岡田朋之,SINGH Shiv Jee,SALA Alberto,山本明保,岸尾光二,藤平哲也,幾原雄一,藤久裕司,後藤義人,永崎洋,下山淳一, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), Vol. 74th, 2013/08/31
  • 電子顕微鏡が目指す微小の世界, 藤平哲也,柴田直哉,幾原雄一, 検査技術, 日本工業出版, Vol. 18, No. 3, p. 14-20, 2013/03
  • 単一サイズ酸化タングステンクラスターディスクのHAADF‐STEM観察, 安松久登,早川鉄一郎,藤平哲也,幾原雄一, 日本化学会講演予稿集, Vol. 92nd, No. 2, 2012/03/09
  • Finite temperature properties of ceramics by first principles phonon state calculations, Vol. 25, No. 2, p. 18-22, 2012/02
  • 六方晶希土類複合酸化物の強誘電性と微構造, 藤平哲也,幾原雄一,田中功,森分博紀, 日本金属学会講演概要(CD-ROM), Vol. 151st, 2012
  • Ca‐Mg‐Ti‐Fe‐As‐O系における新超伝導相(Fe<sub>2</sub>As<sub>2</sub>)(Ca<sub>8</sub>(Mg,Ti)<sub>6</sub>O<sub>y</sub>)及び様々な積層パターン, 清水保章,荻野拓,山本明保,岸尾光二,藤平哲也,幾原雄一,下山淳一, 応用物理学関係連合講演会講演予稿集(CD-ROM), Vol. 58th, 2011/03/09
  • 厚いペロブスカイト層を持つ鉄系超伝導体の超伝導特性, 佐藤伸也,荻野拓,山本明保,岸尾光二,藤平哲也,幾原雄一,下山淳一, 応用物理学関係連合講演会講演予稿集(CD-ROM), Vol. 58th, 2011/03/09
  • 新規層状Feニクタイド超伝導体(Fe<sub>2</sub>As<sub>2</sub>)(Ca<sub>6</sub>(Al,Ti)<sub>4</sub>O<sub>y</sub>), 町田健次,荻野拓,川口直登,牛山晃一,山本明保,岸尾光二,藤平哲也,幾原雄一,下山淳一, 応用物理学会学術講演会講演予稿集(CD-ROM), Vol. 71st, 2010/08/30
  • 厚いブロック層を持つ鉄ニクタイド系超伝導体の新ホモロガス相Fe<sub>2</sub>As<sub>2</sub>Ca<sub>n+1</sub>(Sc,Ti)<sub>n</sub>O<sub>y</sub>[n=3,4,5], 佐藤伸也,荻野拓,山本明保,岸尾光二,藤平哲也,幾原雄一,下山淳一, 応用物理学会学術講演会講演予稿集(CD-ROM), Vol. 71st, 2010/08/30

Industrial Property Rights

  • メモリスタ、それを備えた半導体素子およびメモリスタを備えたアレイシステム, 林侑介,藤平哲也,酒井朗, 特願2020-214807, 出願日:2020/11

Works

  • 3D-OVPE-GaN単結晶におけるフローラル成長モード（日本セラミックス協会第47回学術写真賞 特別賞, セラミックス協会誌 2023年表紙）, 栗谷淳,藤平哲也,林侑介,宇佐美茂佳,今西正幸,森勇介,酒井朗,滝野淳一,隅智亮,岡山芳央, 日本セラミックス協会第47回学術写真賞 特別賞, 2022/09 -
  • Versatile functionality of four-terminal TiO2-x memristive devices as artificial synapses for neuromorphic computing (Slected for Cover of ACS Appl. Electron. Mater.), Ryotaro Miyake,Zenya Nagata,Kenta Adachi,Yusuke Hayashi,Tetsuya Tohei,Akira Sakai, 2022/05 -

Awards

  • 日本セラミックス協会 第47回学術写真賞 特別賞, 栗谷淳、藤平哲也*、林侑介、宇佐美茂佳、今西正幸、森勇介、酒井朗、滝野淳一、隅智亮、岡山芳央, 2022/07
  • 日本セラミックス協会 井関孝善賞, 藤平哲也, 2016/11
  • 日本金属学会金属組織写真賞 最優秀賞, 2015/03
  • 日本セラミックス協会学術写真賞 最優秀賞, 2015/03
  • 5th International Conference on the Science and Technology for Advanced Ceramics (STAC5) 最優秀ポスター賞, 2011/06
  • 日本セラミックス協会学術写真賞 優秀賞, 2011/04
  • 27th Korea-Japan International Seminar on Ceramics, Young Ceramist Best Presentation Award 2010, 2010/11
  • 第19回日本MRS学術シンポジウム奨励賞, 2009/12

Presentations

  • 酸化物四端子型メモリスタの結晶微細構造と電気特性, 藤平哲也,三宅亮太郎,谷口奈穂,上甲守治,林侑介,酒井朗, 第68回応用物理学会春季学術講演会, 2021/03/06
  • Electric and Microstructural Analysis of Rutile TiO2 Single Crystal Memristor, Tetsuya Tohei, FMS-NANOMATA 2019, 2019/11/10
  • FIBおよびイオンミリング試料作製法による酸化チタン単結晶メモリスタの微構造解析, 藤平哲也, 大阪大学ナノテクノロジー設備供用拠点 微細構造解析プラットフォーム2018年度第1回地域セミナー, 2018/10/02
  • 先端材料設計を目指した材料・デバイスの原子レベル解析, 藤平哲也, 日本セラミックス協会2017年度ガラス表面・ 分析研究討論会, 2018/02/16
  • Atomic diffusion and vibrational properties of alumina ceramics by first principles calculations, 〇T. Tohei,Y. Watanabe,N. Shibata,Y. Ikuhara, 41th International Conference and Exposition on Advanced Ceramics and Composites (ICACC17), 2017/01/26
  • Atomic scale STEM analysis of structure and dopant effects on grain boundary in oxide ceramics, 〇T. Tohei,M. Sakai,N. Shibata,Y. Ikuhara, 40th International Conference and Exposition on Advanced Ceramics and Composites (ICACC16), 2016/01/26
  • Phonon and related properties of ceramics materials from first principles calculations, 〇T. Tohei,Y. Watanabe,Y. Ikuhara, 2nd International Symposium on Frontiers in Materials Science (FMS2015), 2015/11/21
  • First principles study of grain boundary diffusion in α-Al2O3, 〇T. Tohei,Y. Watanabe,N. Shibata,Y. Ikuhara, 11th International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE), 2015/06/16
  • 走査透過型電子顕微鏡による材料微構造の原子レベル解析, 藤平哲也,熊本明仁,柴田直哉,幾原雄一, 日本顕微鏡学会第70回記念学術講演会, 2014/05/12
  • 原子分解能STEMによる材料界面・微構造の解析, 藤平哲也,柴田直哉,溝口照康,幾原雄一, 第74回応用物理学会秋季学術講演会, 2013/09/16
  • Structure and Dopant Effects of Oxide Grain Boundaries by Atomic Scale STEM Analysis, 〇T. Tohei,M. Sakai,Y. Watanabe,N. Shibata,Y. Ikuhara, 7th International Conference on the Science and Technology for Advanced Ceramics (STAC7), 2013/06/20
  • Multiscale analysis of structure and property of functional crystals based on combined microscopic approaches, Tetsuya Tohei, 2020/02/15

Media Coverage

  • 離陸開始のGaNで早くも次世代研究活況、高耐圧・高周波に複数軸で挑む, 日経BP, 2023/02

Committee Memberships

  • 応用物理学会関西支部幹事, 2018/04 - 2020/03