Papers - YAMAMOTO Takahisa

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

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

DOI： 10.1002/celc.202300182

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

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

DOI： 10.2320/jinstmet.J2023001

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

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Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jeurceramsoc.2023.06.001

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

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Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.2109/jcersj2.23011

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

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Language：English  

DOI： 10.1063/5.0144271

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

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

DOI： 10.1080/02670836.2023.2187973

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

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Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.2109/jcersj2.23179

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

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DOI： 10.1002/adem.202201807

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

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DOI： doi.org/10.2320/matertrans.MT-N2022004

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

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.2479/jjspm.70.18

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

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DOI： doi.org/10.2109/jcersj2.22114

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

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DOI： 10.1016/j.jlumin.2022.119508

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

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DOI： 10.2109/jcersj2.22109

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

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DOI： 10.1016/j.jeurceramsoc.2022.10.065

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

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

DOI： 10.1111/jace.18889

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

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

DOI： https://doi.org/10.1021/acsaelm.2c00691

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

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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

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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

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DOI： https://doi.org/10.1016/j.ceramint.2022.06.185

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

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