The University of Tokyo   Assistant

1989.4 - 1999.3

第63回 学術賞

2008.6   公益社団法人 日本セラミックス協会   構造・機能セラミックスの粒界計測と組織制御に関する研究

山本 剛久

The use of He buffer gas for moderating the plume kinetic energy during Nd:YAG-PLD growth of EuXY2-XO3 phosphor films Reviewed

S. Suzuki, T. Dazai, T. Tokunaga, T. Yamamoto, R. Katoh, M. Lippmaa, R. Takahashi

Journal of Applied Physics   Vol. 135   page： 195302   2024.5

Topographical and morphological changes of the single-crystal (La0.3Sr0.7)(Al0.65Ta0.35)O3 (001) surface treated with high-purity deionized water Reviewed

Y. Tokuda, N. Nishikawa, T. Irimoto, Y. Katsuyama, S. Kobayashi, T. Tokunaga, T. Yamamoto

Surface and Interface Analysis   Vol. 56 ( 8 ) page： 564 - 572   2024.4

Optical and mechanical properties of rutile TiO2 subjected to AC flash processing Reviewed

Hiroshi Masuda, Tomoharu Tokunaga, Takahisa Yamamoto, Hidehiro Yoshida

Scripta Materialia   Vol. 246   page： 116088   2024.3

Non-uniformity of shrinkage rate as a function of current acceleration during flash event under voltage-to-current protocol in 8 mol %Y2O3-ZrO2 Reviewed

M. Seko, S. Inagaki, T. Tokunaga, T. Yamamoto

Journal of the Ceramic Society of Japan   Vol. 132 ( 3 ) page： 93 - 98   2024.3

Variation of grain boundary dihedral angles caused by voltage-to-current-based flash treatment in fully stabilized yttria-doped zirconia polycrystals Reviewed

M. Seko, S. Kayukawa, S. Inagaki, T. Tokunaga, T. Yamamoto

Journal of the Ceramic Society of Japan   Vol. 132 ( 2 ) page： 63 - 67   2024.2

Applying an alternating current to strontium titanate minimizes the change in oxidation state caused by flash sintering Reviewed

M. Seko, S. Inagaki, T. Tokunaga, S. Kobayashi, A. Nakamura, T. Yamamoto

Journal of the European Ceramic Society   Vol. 44   page： 2965 - 2971   2023.12

One-pot synthesis of Ag–In–Ga–S nanocrystals embedded in a Ga2O3 matrix and enhancement of band-edge emission by Na+ doping Reviewed

M. Tozawa, C. Miyamae, K. Akiyoshi, T. Kameyama, T. Yamamoto, G. Motomura, Y. Fujisaki, T. Uematsu, S. Kuwabata, T. Torimoto

Nanoscale Advances   Vol. 5   page： 7057 - 7066   2023.11

Near-full compaction within only 30 min of total sintering time by shrinkage-rate-controlled flash sintering in 3 mol% Y2O3-doped ZrO2 polycrystal Reviewed

Yuki ISHINO, Ayu KODAIRA, Tomoharu TOKUNAGA, and Takahisa YAMAMOTO

Journal of the Ceramic Society of Japan   Vol. 131 ( 10 )   2023.10

Improvements in Flash Sintering for Practical Application Reviewed

Takahisa YAMAMOTO

Materials Transactions   Vol. 64 ( 9 ) page： 2059 - 2068   2023.9

StructuralDefectEffecton the ConcentrationQuenchingofTbxY2−xO3PhosphorThin Films Reviewed

Shizuka Suzuki, Takuro Dazai, Tomoharu Tokunaga, Takahisa Yamamoto, Ryuzi Katoh, Ryota Takahashi

J. Phys.Chem.C   Vol. 127   page： 9380 - 9387   2023.9

Apparent Sintering Activation Energy Estimated by Master Sintering Curves for 8 mol% Y2O3 Doped ZrO2 Polycrystals during Shrinkage-Rate Controlled Flash Sintering Reviewed

Masao KOIKE, Ayu KODAIRA, Tomoharu TOKUNAGA, and Takahisa YAMAMOTO

Materials Transactions   Vol. 64 ( 9 ) page： 2315 - 2320   2023.9

Hydrogarnet-Derived Porous Polyhedral Particles of SrFeO3-δ Perovskite Reviewed

H. Otaguro, T. Takeno, R. Sugimoto, S. Hosokawa, H. Akamatsu, T. Yamamoto, K. Nakanishi, K. Hayashi, G. Hasegawa

Chemistry Materials   Vol. 35   page： 6423 - 6436   2023.8

PromotingOxygenReductionReactionby ExcitationofLocalizedSurfacePlasmonof Shape-and Facet-ControlledOctahedralAu@PtCore-ShellNanocrystals Reviewed

Tatsuya Kameyama, Kentaro Sato, Takahisa Yamamoto, Mamoru Tamura, Takuya Iida, Tatsuya Shoji, Yasuyuki Tsuboi, Tsukasa Torimoto

ChemElectroChem   Vol. 10   page： e202300182   2023.7

ナノインデンテーション法を用いた高純度アルミニウム合金の 局所力学特性に及ぼす添加元素の影響解明 Reviewed

寺崎保裕, 望月喬史, 小畠淳平, 山本剛久, 瀧川順庸

日本金属学会誌   Vol. 87 ( 7 ) page： 219 - 225   2023.7

Flash healing of Vickers microcracks formed on the (001) surface of cubic zirconia single crystals Reviewed

Shunsuke KAYUKAWA, Yutaro KATSUYAMA, Ayu KODAIRA, Tomoharu TOKUNAGA, Koji MORITA, Atsutomo NAKAMURA, and Takahisa YAMAMOTO

Journal of the European Ceramic Society   Vol. 43   page： 6272 - 6278   2023.6

Scanning electron microscopy observation in wide field of view for SrO/TiO2-terminated step-terrace structure formed on SrTiO3 (001) single crystal surface Reviewed

utaro KATSUYAMA, Ayu KODAIRA, Tomoharu TOKUNAGA, and Takahisa YAMAMOTO

Journal of the Ceramic Society of Japan   Vol. 131 ( 5 ) page： 135 - 139   2023.5

Development of Cu–In–Ga–S quantum dots with a narrow emission peak for red electroluminescence Reviewed

Chang Jiang, Makoto Tozawa, Kazutaka Akiyoshi, Tatsuya Kameyama, Takahisa Yamamoto, Genichi Motomura, Yoshihide Fujisaki, Taro Uematsu, Susumu Kuwabata, Tsukasa Torimoto

Journal of Chemical Physics   Vol. 158   page： 164708   2023.4

Microstructure and tensile strength of electrodeposited Fe-rich bcc FeCoNi medium-entropy alloy Reviewed

A. Watanabe, T. Yamamoto, R. Miyamoto, Y. Takigawa

Materials Science and Technology     2023.3

Non-uniformity of shrinkage rate as a function of current acceleration during flash event under voltage-to-current protocol in 8 mol%Y2O3–ZrO2 Reviewed

M. Seko, S. Inagaki, T. Tokunaga, T. Yamamoto

Journal of the Ceramic Society of Japan   Vol. 132 ( 3 ) page： 93 - 98   2023.3

Effect of Initial Grain Size on Crack Healing Behavior under DC Electric Field of Zirconia (8Y-CSZ) Ceramic Reviewed

S. Takahashi, K. Morita, K. Nambu, D. Terada, K. Kobayashi, T. Tokunaga, T. Yamamoto

Advanced Engineering Materials     page： 220180   2023.2

Local crystallization of amorphous AlOx thin film using electron beam irradiation by SEM Reviewed

T. Tokunaga, S. Tanahashi, S. Okawara, T. Yamamoto

Materials Transactions   Vol. 64 ( 1 ) page： 184 - 190   2023.1

フラッシュ焼結技術の改良と実用化への展望 Reviewed

山本 剛久

  Vol. 70   page： 18 - 29   2023.1

Shrinkage-rate controlled flash sintering for 3 - 10 mol%Y2O3-doped ZrO2 polycrystals Reviewed

M. KOIKE, A. KODARIA, T. TOKUNAGA, T. YAMAMOTO

Journal of the Ceramic Society of Japan   Vol. 130 ( 12 ) page： 906 - 912   2022.12

A technique to modify the photoluminescence intensity of β-Ga2O3 polycrystals using an electric field during sintering Reviewed

R. ONO, A. Kodaira, T. TOKUNAGA, H. YOSHIDA, T. YAMAMOTO

Journal of Luminescence   Vol. 254   page： 119508   2022.11

Shell-like structure to limit further densification formed during flash sintering under alternative current electric field for 8mol%Y2O3-doped ZrO2 Reviewed

M. Seko, K. Hattori, Y. Ishino, A. Kodaira, T. Tokunaga, T. Yamamoto

Journal of the Ceramic Society of Japan   Vol. 130 ( 11 ) page： 895 - 898   2022.11

Microcrack healing in single-crystal cubic zirconia by thermal annealing Invited Reviewed

S. Kayukawa, Y. Katsuyama, A. Kodaira, T. Tokunaga, K. Morita, A. Nakamura, K. Higuchi, T. Yamamoto

Journal of the European Ceramic Society     2022.10

Flash self-joining of Y-TZP ceramics assisted with an ACelectric field Reviewed

K. Nambu, T. Kitaoka, K. Morita, K. Soga, T. Tokunaga, T. Yamamoto, H. Masuda, H. Yoshida

Journal of the American Ceramic Society   Vol. 106   page： 2073 - 2082   2022.10

He buffer gas effect on　Nd:YAG-PLD growth of EuxY2−xO3 phosphor thin films Invited Reviewed

S. Suzuki, T. Dazai, K. Kawashima, T. Tokunaga, T. Yamamoto, R. Takahashi

ACS Applied Electronics Materials   Vol. 4   page： 4419 - 4426   2022.8

Microstructure and tensile strength of electrodeposited Fe-rich bcc FeCoNi medium-entropy alloys Reviewed

A. Watanabe,T. Yamamoto,R. Miyamoto, Y. Takigawa

Materials Science and Technology   Vol. 39 ( 15 ) page： 2028 - 2034   2022.8

Effect of electron beam irradiation in gas atmosphere during ETEM Reviewed

T. Tokunaga, T. Kawakami, K. Higuchi, Y. Yamamoto, T. Yamamoto

Micron   Vol. 158   page： 103289   2022.7

Variation of photoluminescence intensity depending on the timing of electric field application during isothermal flash sintering for 3mol%Y2O3-ZrO2 polycrystal Reviewed

A. Itoh, T. Tokunaga, A. Kodaira, H. Yoshida, T. Yamamoto

Ceramics International   Vol. 48   page： 28712 - 28717   2022.6

Tensile strength of nanocrystalline FeCoNi medium-entropy alloy fabrication using electrodeposition Reviewed

A. Watanabe, T. Yamamoto, Y. Takigawa

Scientific Reports   Vol. 12   page： 12076   2022.6

Estimation of excess oxygen-vacancy formed by direct-current electric field during flash sintering for 3 mol%–10 mol% Y2O3-doped ZrO2 Reviewed

N. Morisaki, T. Tokunaga, K. Kobayashi, A. Kodaira, T. Yamamoto

Ceramic International   Vol. 48   page： 12091 - 12097   2022.5

A first attempt of automated shrinkage-rate control flash sintering using a current profile without feedback of shrinkage behavior for 8mol%Y2O3-doped ZrO2 Reviewed

M. Koike, Y. Ishino, T. Tokunaga, T. Yamamoto

Journal of the Ceramic Society of Japan   Vol. 130 ( 4 ) page： 327 - 330   2022.4

Anelasticity induced by AC flash processing of cubic zirconia Reviewed

H. Masuda, K. Morita, T. Tokunaga, T. Yamamoto, H. Yoshida

Acta Materialia   Vol. 227   page： 117704   2022.2

Electrode Overvoltage Model for a Flash State of Yttria-Stabilized Zirconia: Validity, Limitation, and Open New Issue Reviewed

K. Kobayashi, T. Yamamoto, K. Morita, T. S. Suzuki

Journal of the Ceramic Society of Japan   Vol. 130 ( 1 ) page： 172 - 179   2022.1

Densification of Y2O3 by flash sintering under an AC electric field Reviewed

Kohta Nambu, Koji Morita, Kohei Soga, Takahisa Yamamoto, Hiroshi Masuda, Hidehiro Yoshida

Journal of the European Ceramic Society   Vol. 42   page： 567 - 575   2021.11

Direct determination of a topmost atomic layer of (100) surfaces on (La0.3Sr0.7)(Al0.65Ta0.35)O3 single crystals annealed in air by high-resolution scanning transmission electron microscopy Reviewed

Y. Tokuda, T. Irimoto, N. Nishikawa, Y. Katsuyama, S. Kobayashi, T. Tokunaga, and T. Yamamoto

Surface and Interface Analysis   Vol. 54 ( 11 ) page： 212 - 217   2021.11

Photoluminescence property of quinary Ag-(In,Ga)-(S,Se) quantum dots with a gradient alloy structure for in vivo bioimaging Reviewed

Nurmanita Rismaningsih, Hiroki Yamauchi, Tatsuya Kameyama, Takahisa Yamamoto, Saho Morita, Hiroshi Yukawa, Taro Uematsu, Yoshinobu Baba, Susumu Kuwabata, Tsukasa Torimoto

Journal of Materials Chemistry C   Vol. 9 ( 37 ) page： 12791 - 12801   2021.8

Rapid sintering of 3 mol% Y2O3-doped ZrO2 by a combined rapid furnace heating and shrinkage-controlled flash sintering protocol Reviewed

Yuki ISHINO, Kimihiro TAGUCHI, Ayu KODAIRA, Tomoharu TOKUNAGA, Takahisa YAMAMOTO

Journal of the Ceramic Society of Japan   Vol. 129 ( 8 ) page： 551 - 554   2021.8

He Buffer Gas for Moderating the Kinetic Energy of Pulsed Laser Deposition Plumes Reviewed

Ryota Takahashi, Takahisa Yamamoto, Mikk Lippmaa

Crystal Growth & Design   Vol. 21 ( 9 ) page： 5017 - 5026   2021.7

Near complete densification of flash sintered 8YSZ: controlled shrinkage rate effects Reviewed

Kimihiro TAGUCHI, Yuki ISHINO, Tomoharu TOKUNAGA, Takahisa YAMAMOTO

Journal of the European Ceramic Society   Vol. 41 ( 8 ) page： 4567 - 4571   2021.7

Shrinkage rate control during a flash state by current-ramping for 3mol%Y2O3-doped ZrO2 polycrystals Reviewed

Yuki ISHINO, Kimihiro TAGUCHI, Masao KOIKE, Tomoharu TOKUNAGA, Takahisa YAMAMOTO

Journal of the American Ceramic Society   Vol. 104 ( 10 ) page： 4960 - 4967   2021.5

Electric current dependence of plastic flow behavior with large tensile elongation in tetragonal zirconia polycrystal under a DC field Reviewed

Yamato Sasaki, Koji Morita, Takahisa Yamamoto, Kohei Soga, Hiroshi Masuda, Hidehiro Yoshida

Scripta Materialia   Vol. 194   page： 113659   2021.3

Constant shrinkage rate control during a flash event for 8 mol%Y2O3-doped ZrO2 polycrystals Reviewed

Kimihiro TAGUCHI, Yuki ISHINO, Tomoharu TOKUNAGA, Takahisa YAMAMOTO

Journal of the Ceramic Society of Japan   Vol. 129 ( 3 ) page： 204 - 207   2021.3

Nanopillar composite electrodes for solar‑driven water splitting Reviewed

Mikk Lippmaa, Seiji Kawasaki, Ryota Takahashi, Takahisa Yamamoto

MRS BULLETIN   Vol. 46 ( 2 ) page： 142 - 151   2021.2

セラミックスにおける強電界ナノダイナミクス Reviewed

吉田英弘，増田紘士，森田孝治，山本剛久

まてりあ   Vol. 60 ( 1 ) page： 19 - 24   2021.1

Power dissipation behaviors during SCF-sintering for 8 mol% Y2O3-doped ZrO2 Reviewed

Yuki ISHINO, Kimihiro TAGUCHI, Ayu KODAIRA, Tomoharu TOKUNAGA, Takahisa YAMAMOTO

Journal of the Japan Society of Powder and Powder Metallurgy   Vol. 68 ( 11 ) page： 482 - 486   2021

Cross-sectional area dependency of shrinkages and grain sizes in flash sintered 3mol%Y2O3-ZrO2 polycrystals at direct and alternating electric current fields Reviewed

Tsuyoshi KURACHI, Kiyoshi KOBAYASHI, Tomoharu TOKUNAGA, Takahisa YAMAMOTO

Journal of the Japan Society of Powder and Powder Metallurgy   Vol. 68 ( 11 ) page： 487 - 493   2021

Flash sintering for BaTiO3 with square alternating current field including zero-field duration Reviewed

Umemura, R; Tokunaga, T; Yamamoto, T

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   Vol. 128 ( 12 ) page： 1018 - 1023   2020.12

フラッシュ焼結の学理構築と革新的焼結技術への展開（受賞解説論文平成 30 年度研究進歩賞） Invited Reviewed

山本 剛久, 吉田 英弘

Journal of Lapanese Society of Powder and Powder Metallurgy   Vol. 67 ( 11 ) page： 593 - 600   2020.11

Controlling the visible-light driven photocatalytic activity of alloyed ZnSe-AgInSe(2)quantum dots for hydrogen production Reviewed

Hsieh, PY; Kameyama, T; Takiyama, T; Masuoka, K; Yamamoto, T; Hsu, YJ; Torimoto, T

JOURNAL OF MATERIALS CHEMISTRY A   Vol. 8 ( 26 ) page： 13142 - 13149   2020.8

Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation Reviewed

Akiyoshi, K; Kameyama, T; Yamamoto, T; Kuwabata, S; Tatsuma, T; Torimoto, T

RSC ADVANCES   Vol. 10 ( 48 ) page： 28516 - 28522   2020.8

Blue photo luminescence from 3 mol%Y2O3-doped ZrO2 polycrystals sintered by flash sintering under an alternating current electric field Reviewed

Y. Yamashita, T. Kurachi, T.Tokunaga, H. Yoshida, T. Yamamoto

Journal of the European Ceramic Society   Vol. 40   page： 2072 - 2076   2020.6

Doping effect on the flash sintering of Y2O3: Promotion of densification and optical translucency Reviewed

H. Yoshidaa, H. Hayasaka, K. Soga, K. Morita, B.N. Kim, T. Yamamoto

Journal of the European Ceramic Society   Vol. 40   page： 6053 - 6060   2020.6

Suppression of nitridation of yttria-doped zirconia during flash sintering Reviewed

Kurachi, T; Yamashita, Y; Tokunaga, T; Yoshida, H; Yamamoto, T

Journal of the American Ceramic Society   Vol. 103 ( 5 ) page： 3002 - 3007   2020.5

H2 production from methane decomposition by fullerene at low temperature Reviewed

T. Tokunaga, K. Kuno, T. Kawakami, T. Yamamoto, A. Yoshigoe

International Journal of Hydrogen Energy   Vol. 45   page： 14347 - 14353   2020.4

Blue photoluminescence at room temperature from Y2O3-doped ZrO2 polycrystals sintered by flash sintering Reviewed

Yamashita, Y; Itoh, A; Tokunaga, T; Yoshida, H; Yamamoto, T

APPLIED PHYSICS EXPRESS   Vol. 13 ( 2 ) page： 35506   2020.3

Tailored Photoluminescence Properties of Ag(In,Ga)Se-2 Quantum Dots for Near-Infrared In Vivo Imaging Reviewed

Kameyama, T; Yamauchi, H; Yamamoto, T; Mizumaki, T; Yukawa, H; Yamamoto, M; Ikeda, S; Uematsu, T; Baba, Y; Kuwabata, S; Torimoto, T

ACS APPLIED NANO MATERIALS   Vol. 3 ( 4 ) page： 3275 - 3287   2020.3

Noble metal clustering and nanopillar formation in an oxide matrix Reviewed

Lippmaa, M; Kawasaki, S; Takahashi, R; Yamamoto, T

JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59 ( 1 ) page： 10501   2020.1

Microstructural heterogeneity in the electrodeposited Ni: insights from growth modes Reviewed

Matsui, I; Watanabe, A; Takigawa, Y; Omura, N; Yamamoto, T

Scientific Reports   Vol. 10 ( 1 ) page： 5548   2020.1

Photoluminescence properties of undoped and Si4+-doped polycrystalline Y2O3 phosphors prepared by flash-sintering Reviewed

Nambu, K; Hayasaka, H; Yamamoto, T; Yoshida, H

APPLIED PHYSICS EXPRESS   Vol. 12 ( 7 ) page： 75504   2019.12

Technique to control specimen electric current during a flash state with alternating current electric fields Reviewed

Yamashita, Y; Kurachi, T; Tokunaga, T; Yoshida, H; Yamamoto, T

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   Vol. 127 ( 11 ) page： 849 - 851   2019.11

Core Nanoparticle Engineering for Narrower and More Intense Band-Edge Emission from AgInS2/GaSx Core/Shell Quantum Dots Reviewed

Hoisang, W; Uematsu, T; Yamamoto, T; Torimoto, T; Kuwabata, S

NANOMATERIALS   Vol. 9 ( 12 ) page： 1763   2019.9

Mechanical properties and microstructures after abnormal grain growth in electrodeposited Ni-W alloys Reviewed

Matsui, I; Watanabe, A; Uesugi, T; Omura, N; Takigawa, Y; Yamamoto, T

MATERIALIA   Vol. 8 - 100481   2019.8

Local Structure of High Performance TiOx Electron-Selective Contact Revealed by Electron Energy Loss Spectroscopy Reviewed

T. Mochizuki, K. Gotoh, Y. Kurokawa, T. Yamamoto, N. Usami

Advanced Materials Interfaces   Vol. 6 ( 3 ) page： 1801645   2019.6

Direct observation of strain-stored grains in electrodeposited nanocrystalline Ni-W alloys by low-angle annular dark field diffraction contrast imaging Reviewed

Matsui, I; Takigawa, Y; Yamamoto, T

SCRIPTA MATERIALIA   Vol. 166   page： 29 - 33   2019.2

Removal of carbon contamination in ETEM by introducing Ar during electron beam irradiation Reviewed

Tokunaga, T; Saito, K; Kuno, K; Higuchi, K; Yamamoto, Y; Yamamoto, T

JOURNAL OF MICROSCOPY   Vol. 273 ( 1 ) page： 46 - 52   2019.1

Wavelength-Tunable Band-Edge Photoluminescence of Nonstoichiometric Ag-In-S Nanoparticles via Ga3+ Doping Reviewed

Kameyama, T; Kishi, M; Miyamae, C; Sharma, DK; Hirata, S; Yamamoto, T; Uematsu, T; Vacha, M; Kuwabata, S; Torimoto, T

ACS APPLIED MATERIALS & INTERFACES   Vol. 10 ( 49 ) page： 42844 - 42855   2018.10

Narrow band-edge photoluminescence from AgInS2 semiconductor nanoparticles by the formation of amorphous III-VI semiconductor shells Reviewed

T. Uematsu, K. Wajima, D. Kumar Sharma, S. Hirata, T. Yamamoto, T. Kameyama, M. Vacha, T. Torimoto, S. Kuwabata

NPG Asia Materials   Vol. 10   page： 713-726   2018.10

フラッシュ焼結による 酸化物セラミックスの 製造とその関連技術 Invited Reviewed

吉田英弘、山本剛久

セラミックス   Vol. 53 ( 9 ) page： 591-594   2018.9

電析バルクナノ結晶 Ni 合金における 粒界安定性と機械的特性の関係 Reviewed

松井 功, 尾村 直紀, 山本 剛久, 瀧川 順庸

まてりあ   Vol. 57 ( 10 ) page： 479-486   2018.8

フラッシュ焼結によるセラミックスの緻密化～電界下の物質輸送の素過程～ Invited Reviewed

山本 剛久、小林　哲朗、吉田 英弘

  Vol. 65 ( 10 ) page： 646-653   2018.7

Topotactic Synthesis of Mesoporous 12CaO·7Al2O3 Mesocrystalline Microcubes toward Catalytic Ammonia Synthesis Reviewed

G. Hasegawa, S. Moriya,M. Inada,M. Kitano,M. Okunaka, T. Yamamoto,Y. Matsukawa, K. Nishimi,K. Shima,N. Enomoto,S. Matsuishi, H. Hosono, K. Hayashi

Chem. Mater.   Vol. 30   page： 4498−4502   2018.7

Rod-shaped Zn-Ag-In-Te nanocrystals with wavelength-tunable band-edge photoluminescence in the near-IR region Reviewed

T. Kameyama, K. Sugiura, Y. Ishigami, T. Yamamoto, S. Kuwabata, T. Okuhata, N. Tamai, T. Torimoto

Journal of Materials Chemistry C   Vol. 6   page： 2034--2042   2018.6

Effect of low-temperature annealing on tensile behavior of electrodeposited bulk nanocrystalline Ni-W alloys Reviewed

Matsui, I; Yamamoto, T; Omura, N; Takigawa, Y

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING   Vol. 709   page： 241 - 246   2018.5

酸化物系セラミックのフラッシュ焼結と 今後の進展 Invited Reviewed

山本 剛久、吉田 英弘

まてりあ   Vol. 57 ( 8 ) page： 373-380   2018.4

Production of transparent yttrium oxide ceramics by the combination of low temperature spark plasma sintering and zinc cation-doping Reviewed

Journal of the European Ceramic Society   Vol. 38 ( 4 ) page： 1972-1980   2018.4

Intergranular amorphous films formed by DC electric field in pure zirconia Reviewed

N. Morisaki, H. Yoshida, T. Kobayashi, T. Tokunaga, T. Yamamoto

Journal of the American Ceramic Society   Vol. 101   page： 3282-3287   2018.2

Multiphase nanodomains in a strained BaTiO3 film on a GdScO3 substrate Reviewed

S.Kobayashi, K.Inoue, T.Kato, Y.Ikuhara, T.Yamamoto

Journal of Applied Physics   Vol. 123   page： 06402   2018.2

Enhanced Photocatalytic Activity of Zn-Ag-In-S Semiconductor Nanocrystals with a Dumbbell-Shaped Heterostructure Reviewed

T. Kameyama, S. Koyama, T. Yamamoto, S. Kuwabata, T. Torimoto

J. Phys. Chem. C   Vol. 122 ( 25 ) page： 13705-13715   2018.1

Electrodeposition with intermittent addition of trimethylamine borane to produce ductile bulk nanocrystalline Ni-B alloys Reviewed

I. Matsui, N. Omura, T. Yamamoto, Y. Takigawa

Surface & Coatings Technology   Vol. 337   page： 411-417   2018.1

Directly determining the polarity of WC grains in WC-12wt%Co alloy by ABF-STEM Reviewed

Y. Hayashi, T. Tokunaga, K. Sasaki, T. Yamamoto

Inter. J. Refract. Met. Hard Mater.   Vol. 62   page： 9 - 13   2017.10

Microstructure analysis of IrO2 thin films Reviewed

X. Houa, R. Takahashi, T. Yamamoto, M. Lippmaaa

Journal of Crystal Growth   Vol. 462   page： 24 - 28   2017.5

Consolidation of undoped, monoclinic zirconia polycrystals by flash sintering Reviewed

N. Morisaki, H. Yoshida, T. Tokunaga, K. Sasaki, T. Yamamoto

J. Am. Ceram. Soc.   Vol. 100   page： 3851-3857   2017.4

Methane decomposition for hydrogen production by catalytic activity of Reviewed

T. Tokunaga, N. Kishi, K. Yamakawa, K. Sasaki, T. Yamamoto

Journal of the Ceramic Society of Japan   Vol. 125 ( 4 ) page： 185-189   2017.4

Electric current-controlled synthesis of BaTiO3 Reviewed

Y. Nakagawa, H. Yoshida, A. Uehashi, T. Tokunaga, K. Sasaki, T. Yamamoto

J. Am. Ceram. Soc.   Vol. 100   page： 3843-3850   2017.4

Single step preparation of indium tin oxide nanocrystals dispersed in ionic liquids via oxidation of molten In Sn alloys Reviewed

D. Sugioka, T. Kameyama, T. Yamamoto, S. Kuwabata, T. Torimoto

Chem. Commun.   Vol. 52   page： 12241-12244   2016.11

Formation of a Pt-Decorated Au Nanoparticle Monolayer Floating on an Ionic Liquid by the Ionic Liquid/Metal Sputtering Method and Tunable Electrocatalytic Activities of the Resulting Monolayer Reviewed

D.Sugioka, T. Kameyama, S. Kuwabata, T. Yamamoto, T. Torimoto

ACS Appl. Mater. Interfaces   Vol. 8 ( 17 ) page： 10874–10883   2016.8

Reduction in sintering temperature for flash-sintering of yttria by nickel cation-doping Reviewed

H. Yoshida, K. Morita, BN. Kim, Y. Sakka, T. Yamamoto

  Vol. 106 ( 5 ) page： 344–352   2016.5

Formation of grain boundary second phase in BaTiO3 polycrystal under a high DC electric field at elevated temperatures Reviewed

H. Yoshida, A. Uehashi, T. Tokunaga, K. Sasaki, T. Yamamoto

J. Ceram. Soc. Jpn.   Vol. 124 ( 4 ) page： 388-392   2016.4

Direct observation of B-site ordering in LSAT: (La0.3Sr0.7)(Al0.65Ta0.35)O3 single crystal Reviewed

S. Okada, S. Kobayashi, K. Ohashi, N. Nishikawa, T. Tokunaga, K. Sasaki, T. Yamamoto

Appl. Phys. Lett.   Vol. 108   page： 4   2016

Synthesis of zirconium oxynitride in air under DC electric fields Invited Reviewed

N. Morisaki, H. Yoshida, K. Matsui, T. Tokunaga, K. Sasaki, T. Yamamoto

Appl. Phys. Lett.   Vol. 109   page： 083104   2016

Photoelectrochemical water splitting enhanced by self-assembled metal nanopillars embedded in an oxide semiconductor photoelectrode Reviewed

S. Kawasaki, R. Takahashi, T. Yamamoto, M. Kobayashi, H. Kumigashira, J. Yoshinobu, F. Komori, A. Kudo, M. Lippmaa

Nature Communications   Vol. 7   page： 11818   2016

High Electron Mobility of Nb-Doped SrTiO3 Films Stemming from Rod-Type Sr Vacancy Clusters Reviewed

S. Kobayashi, Y. Mizumukai, T. Ohnishi, N. Shibata, Y. Ikuhara and T. Yamamoto

Sr Vacancy Clusters   Vol. 9 ( 11 ) page： 10769   2015.11

Controlling the Electronic Energy Structure of ZnS-AgInS2 Solid Solution Nanocrystals for Photoluminescence and Photocatalytic Hydrogen Evolution Reviewed

  Vol. 119 ( 44 ) page： 24740-24749   2015.11

Carbon content dependence of grain growth mode in VC-doped WC-Co hardmetals Reviewed

I. Sugiyama, Y. Mizumukai, T. Taniguchi, K. Okada, T. Tanase, Y. Ikuhara and T. Yamamoto

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS   Vol. 52   page： 245   2015.6

Enhancement of sintering rates in BaTiO3 by controlling of DC electric current Reviewed

A. Uehashi, H. Yoshida, T. Tokunaga, K. Sasaki, T. Yamamoto

J. Ceram.Soc. Jpn.   Vol. 123 ( 6 ) page： 465-468   2015.6

Assessment of Strain-Generated Oxygen Vacancies Using SrTiO3 Bicrystals Reviewed

SY. Choi, SD Kim, M. Choi, HS Lee, J. Ryu, N. Shibata, T. Mizoguchi, E. Tochigi, T. Yamamoto, SJL. Kang, Y. Ikuhara

Nano Lett.   Vol. 15 ( 6 ) page： 4129–4134   2015.6

In situ observation of carbon nanotube yarn during voltage application Reviewed

T. Tokunaga, Y. Hayashi, T. Iijima, Y. Uesugi, M. Unten, K. Sasaki, T. Yamamoto

Micron   Vol. 74   page： 30–34   2015.5

Ultrathin oxide shell coating of metal nanoparticles using ionic liquid/metal sputtering Reviewed

T. Torimoto, Y. Ohta, K. Enokida, D. Sugioka, T. Kameyama, T. Yamamoto, T. Shibayama, K. Yoshii, T. Tsudac, S. Kuwabata*

Journal of Materials Chemistry A   Vol. 3   page： 6177-6186   2015.3

Spatially-resolved mapping of history-dependent coupled electrochemical and electronical behaviors of electroresistive NiO Reviewed

I. Sugiyama, Y. Kim, S. Jesse, E. Strelcov, A. Kumar, A. Tselev, E. Rahani, T. Yamamoto, N. Shibata, Y. Ikuhara

Scientific reports   Vol. 4   2014.10

Spontaneous Growth of Strain-Free Magnetite Nanocrystals via Temperature-Driven Dewetting Reviewed

R. Takahashi, H. Misumi, T. Yamamoto, M. Lippmaa

Cryst. Growth Design   Vol. 14 ( 3 ) page： 1264-1271   2014.5

Densification behavior and microstructural development in undoped yttria prepared by flash-sintering Reviewed

H. Yoshidaa, Y. Sakkaa, T. Yamamoto, JM Lebrun, R. Raj

J. Euro. Ceram. Soc.   Vol. 34 ( 4 ) page： 991-1000   2014.4

Fabrication of tin-filled carbon nanofibres by microwave plasma vapour deposition and their in situ heating observation by environmental transmission electron microscopy Reviewed

T. Tokunaga, T. Kanematsu, T. Ito, T. Ota, Y. Hayashi, K. Sasaki, T. Yamamoto

Nanoscale Research Letters   Vol. 8 ( 302 )   2013.8

Atomistic study of abnormal grain growth structure in BaTiO3 by transmission electron microscopy and scanning transmission electron microscopy Reviewed

SJ. Zheng, XL. Ma, T. Yamamoto, Y. Ikuhara

ACTA MATERIALIA   Vol. 61 ( 7 ) page： 2298-2307   2013.7

Effect of local coordination of Mn on Mn-L-2,L-3 edge electron energy loss spectrum Reviewed

S. Nishida, S. Kobayashi, A. Kumamoto, H. Ikeno, T. Mizoguchi, I. Tanaka, Y. Ikuhara, T. Yamamoto

  Vol. 114 ( 5 ) page： 054906   2013.5

Ferromagnetic dislocations in antiferromagnetic NiO Reviewed

I. Sugiyama, N. Shibata, Z. Wang, S. Kobayashi, T. Yamamoto and Y. Ikuhara

NATURE NANOTECHNOLOGY   Vol. 8   page： 266-270   2013.4

Unusual 90 degrees domain structure in (2/3)Bi(Zn1/2Ti1/2)O-3-(1/3)BiFeO3 epitaxial films with giant 22% tetragonal distortion Reviewed

S. Yasui, K. Yazawa, M. Matsushima, T. Yamada, H. Morioka, H. Uchida, T. Iijima, L. You, JL. Wang, T. Yamamoto, Y. Ikuhara, H. Funakubo

APPLIED PHYSICS LETTERS   Vol. 103 ( 4 ) page： 042904   2013.4

Periodic Nanowire Array at the Crystal Interface Reviewed

A. Nakamura, T. Mizoguchi, K. Matsunaga, T. Yamamoto, N. Shibata, Y. Ikuhara

ACS NANO   Vol. 7 ( 7 ) page： 6297-6302   2013.1

Labyrinth-type domain structure of heteroepitaxial SrMnO2.5 film Reviewed

S. Kobayashi, Y. Ikuhara, T. Yamamoto

APPLIED PHYSICS LETTERS   Vol. 102 ( 23 ) page： 231911   2013.1

Doping effect on sinterability of polycrystalline yttria: From the viewpoint of cation diffusivity Reviewed

H. Yoshida, M. Kodo, K. Soga and T. Yamamoto

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY   ( 32 ) page： 3103-3114   2012.9

Simultaneous visualization of oxygen vacancies and the accompanying cation shifts in a perovskite oxide by combining annular imaging techniques Reviewed

S. Kobayashi, SD. Findlay, N. Shibata, T. Mizoguchi, Y. Sato, E. Okunishi, Y. Ikuhara and T. Yamamoto

APPLIED PHYSICS LETTERS   Vol. 100 ( 19 ) page： 193112   2012.5

Formation of (W,V)Cx layers at the WC/Co interfaces in the VC-doped WC-Co cemented carbide Reviewed

I. Sugiyama, Y. Mizumukai, T. Taniuchi, K. Okada, F. Shirase, T. Tanase, Y. Ikuhara and T. Yamamoto

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS   Vol. 30 ( 1 ) page： 185-187   2012.1

Characterization and atomic modeling of an asymmetric grain boundary Reviewed

H. S. Lee, T. Mizoguchi, T. Yamamoto, S. J. L. Kang and Y. Ikuhara

Physical Review B   Vol. 84 ( 19 ) page： 195319   2011

金属材料実験の手引き　1．組織観察　1-6　透過型電子顕微鏡の構造と仕組み Reviewed

山本 剛久, 小平 亜侑

まてりあ   Vol. 61 ( 6 ) page： 346 - 353   2022.6

第 52 回エンジニアリングセラミックスセミナー 講演概要「フラッシュ焼結技法の進展と今後の展開」 Invited

山本　剛久

日本セラミックス協会エンジニアリングセラミックス部会エンジニアリングセラミックスセミナー     page： 49 - 58   2021.11

金属実学講座シリーズ 金属材料実験の手引き　光学顕微鏡を用いた組織観察 Invited Reviewed

山本 剛久

まてりあ   Vol. 60 ( 2 ) page： 102 - 109   2021.2

金属素描　タングステン Invited Reviewed

山本 剛久

まてりあ   Vol. 60 ( 2 ) page： 73 - 73   2021.2

あのころのまてりあ 日本金属学会創立の裏話 Invited Reviewed

山本 剛久

まてりあ   Vol. 60 ( 1 ) page： 41 - 47   2021.1

科学館めぐりトヨタ産業技術記念館 Invited Reviewed

山本 剛久

まてりあ   Vol. 59 ( 12 ) page： 688 - 690   2020.12

フラッシュ焼結の学理構築と革新的焼結技術への展開（受賞記念：平成 30 年度研究進歩賞） Invited Reviewed

山本 剛久, 吉田 英弘

  Vol. 67 ( 11 ) page： 593 - 600   2020.11

学会・研究会だより　最先端電子顕微鏡技術と その応用に関する日独二国間交流セミナー Reviewed

山本 剛久, 平山 司

まてりあ   Vol. 59 ( 2 ) page： 108 - 109   2020.2

高性能電子顕微鏡による反応科学・ ナノ材料科学研究支援拠点(名古屋大学) Invited Reviewed

荒井重勇, 山本剛久

まてりあ   Vol. 58 ( 12 ) page： 733 - 737   2019.12

走査型透過電子顕微鏡法による陽イオン微小変位計測を用いた構造解析 Invited Reviewed

小林　俊介, 山本　剛久, 幾原　雄一

顕微鏡   Vol. 54 ( 1 ) page： 19 - 23   2019.1

思い出の教科書，この一冊！ : 金属組織学序論 Reviewed

山本剛久

まてりあ   Vol. 59 ( 1 ) page： 51 - 51   2019.1

8YSZに対する電流制御フラッシュ焼結法の検討

小池 真央, 石野 祐樹, 徳永 智春, 山本 剛久

粉末冶金協会 2021年度秋季大会  2021.11.9  粉末冶金協会

Ga2O3フラッシュ焼結体の蛍光特性

大野 稜乃丞, 伊藤 亜紗, 徳永 智春, 吉田 英弘, 山本 剛久

粉末冶金協会 2021年度秋季大会  2021.11.9  粉末冶金協会

線収縮挙動に着目したフラッシュ焼結法の改良

石野 佑樹, 小池 真央, 徳永 智春, 山本 剛久

日本金属学会2021年秋期(第169回)講演大会  2021.9.17  日本金属学会

超純水処理による酸化物単結晶表面へのステップテラス構造の構築

勝山 湧太郎, 徳田 祥典, 徳永 智春, 山本 剛久

日本金属学会2021年秋期(第170回)講演大会  2021.9.17  日本金属学会

アモルファス薄膜の電子線照射による局所結晶化

棚橋 俊介, 大川原 彩恵, 徳永 智春, 山本 剛久

第82回応用物理学会秋季学術講演会  2021.9.10  応用物理学会

フラッシュ焼結における線収縮制御の有効性

石野 佑樹, 小池 真央, 小平 亜侑, 徳永 智春, 山本 剛久

日本セラミックス協会 第34回秋季シンポジウム  2021.9.2  日本セラミックス協会

イットリア安定化ジルコニアにおける点欠陥構成に及ぼす電界印加効果について

伊藤 亜紗, 吉田 英弘, 徳永 智春, 山本 剛久

日本セラミックス協会 第34回秋季シンポジウム  2021.9.2  日本セラミックス協会

酸化物系セラミックスのフラッシュ焼結と新規蛍光特性の発現 Invited

山本　剛久

令和３年度「放射線科学とその応用第186委員会」第38回研究会  2021.5.18  学振186委員会講演会

交流パルス電界を用いたフラッシュ焼結によるBaTiO3の高密度化

田口公啓，徳永智春，吉田英弘，山本剛久

第30回学生による材料フォーラム  2020.11.12  日本金属学会東海支部

“組織の不均一性を改善する新たなフラッシュ焼結法

高橋征也，徳永智春，吉田英弘，山本剛久

第30回学生による材料フォーラム  2020.11.12  日本金属学会東海支部

3YSZフラッシュ焼結体の高密度化における電流制御の有効性

石野佑樹，徳永智春，吉田英弘，山本剛久

粉末冶金協会 2020年度秋季大会  2020.11.6  粉体粉末冶金協会

フラッシュ焼結の学理構築と革新的焼結技術への展開（受賞講演） Invited

山本 剛久, 吉田 英弘

紛体粉末冶金協会2020年秋季大会  2020.10.28  粉体粉末冶金協会

Blue photoluminescence from flash sintered oxide ceramics (Keynote Lecture) Invited International conference

Takahisa Yamamoto and Hidehiro Yoshida

Materials Science and Engineering Congress (MSE2020)  2020.9.24 

Electric field-enhanced superplastic flow and microstructure development in TZP International conference

Hidehiro Yoshida, Yamato Sasaki, Hiroshi Masuda, Koji Morita, Takahisa Yamamoto

Materials Science and Engineering Congress (MSE2020)  2020.9.24 

イットリア安定化ジルコニのフラッシュ結体における新規蛍光特性 Invited

山本 剛久

日本セラミックス協会第33回秋季シンポジウム  2020.9.3  日本セラミックス協会

イットリア安定化ジルコニアのフラッシュ焼結体における新規蛍光特性

伊藤亜紗，徳永智春，吉田英弘，山本剛久

日本セラミックス協会第33回秋季シンポジウム  2020.9.3  日本セラミックス協会

酸化物系セラミックのフラッシュ焼結 Invited

山本 剛久

日本学術振興会第176委員会第37回研究会  2018.10.3  日本学術振興会第176委員会

酸化物セラミックスのフラッシュ焼結 Invited

山本 剛久

粉体粉末冶金協会平成30年度春季大会（第121回講演大会）  2018.5.15  粉体粉末冶金協会

セラミックを一瞬で焼結させるフラッシュ焼結とは？ Invited

山本 剛久

第三回関西高機能セラミックス展専門技術セミナー  2018.5.10  リード エグジビション ジャパン（株）

酸化物系セラミックスのフラッシュ焼結と新規蛍光特性の発現

山本 剛久

令和３年度「放射線科学とその応用第186委員会」第38回研究会  2021.5.18  日本学術振興会

薄膜貫通転位を利用したナノ細線の開発 研究課題

Grant number：24656406  2012.4 - 2014.3

科学研究費補助金  挑戦的萌芽研究

山本　剛久

チタン酸ストロンチウム結晶中の転位に形成させたナノ細線デバイスの作成

Grant number：21360306  2009.4 - 2011.3

科学研究費補助金  基盤研究(B)

山本 剛久

ナノ機能元素制御高機能薄膜材料の創成

Grant number：19053002  2007.4 - 2012.3

科学研究費補助金  特定領域研究

山本 剛久