Papers - UJIHARA, Toru
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Nucleation sites of expanded stacking faults detected by in operando x-ray topography analysis to design epitaxial layers for bipolar-degradation-free SiC MOSFETs Reviewed Open Access
Kumiko Konishi, Ryusei Fujita, Keisuke Kobayashi, Akio Yoneyama, Kotaro Ishiji, Hiroyuki Okino, Akio Shima, Toru Ujihara
AIP Advances 12 2022.3
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Crossover from incoherent to coherent thermal conduction in bulk titanium oxide natural superlattices
Harada Shunta, Kosaka Naoki, Yagi Takashi, Sugimoto Shunya, Tagawa Miho, Ujihara Toru
SCRIPTA MATERIALIA Vol. 208 2022.2
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Numerical investigation of solute evaporation in crystal growth from solution: A case study of SiC growth by TSSG method
Yifan Dang, Can Zhu, Xin Liu, Wancheng Yu, Xinbo Liu, Koki Suzuki, Tomoaki Furusho, Shunta Harada, Miho Tagawa, Toru Ujihara
Journal of Crystal Growth 2022.2
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Data-Driven Optimization and Experimental Validation for the Lab-Scale Mono-Like Silicon Ingot Growth by Directional Solidification Reviewed Open Access
Xin Liu, Yifan Dang, Hiroyuki Tanaka, Yusuke Fukuda, Kentaro Kutsukake, Takuto Kojima, Toru Ujihara, Noritaka Usami
ACS OMEGA Vol. 7 ( 8 ) page： 6665 - 6673 2022.2
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Solvent design aiming at solution property induced surface stability: A case study using SiC solution growth Open Access
Liu Xinbo, Dang Yifan, Suzuki Koki, Zhu Can, Yu Wancheng, Harada Shunta, Tagawa Miho, Ujihara Toru
JOURNAL OF CRYSTAL GROWTH Vol. 578 2022.1
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High fracture toughness AlN achieved by addition of AlN whiskers and tape-casting Open Access
Shimizu Hiroki, Kondo Naoki, Shimamura Akihiro, Hotta Mikinori, Harada Shunta, Ujihara Toru, Ohnishi Yoshihiro
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN Vol. 130 ( 1 ) page： 195 - 198 2022.1
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Immobilization of partial dislocations bounding double Shockley stacking faults in 4H-SiC observed by in situ synchrotron X-ray topography
Fujie Fumihiro, Harada Shunta, Suo Hiromasa, Raghothamachar Balaji, Dudley Michael, Hanada Kenji, Koizumi Haruhiko, Kato Tomohisa, Tagawa Miho, Ujihara Toru
MATERIALIA Vol. 20 2021.12
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Bayesian Optimization for Cascade-type Multi-stage Processes Reviewed
Shunya Kusakawa, Shion Takeno, Yu Inatsu, Kentaro Kutsukake, Shogo Iwazaki, Takashi Nakano, Toru Ujihara, Masayuki Karasuyama, Ichiro Takeuchi
arXiv:2111 2021.11
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In-operando x-ray topography analysis of SiC metal-oxide-semiconductor field-effect transistors to visualize stacking fault expansion motions dynamically during operations Reviewed
Konishi Kumiko, Fujita Ryusei, Kobayashi Keisuke, Yoneyama Akio, Ishiji Kotaro, Okino Hiroyuki, Shima Akio, Ujihara Toru
JOURNAL OF APPLIED PHYSICS Vol. 130 ( 14 ) 2021.10
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Surface relaxation and photoelectric absorption effects on synchrotron X-ray topographic images of dislocations lying on the basal plane in off-axis 4H-SiC crystals Reviewed Open Access
Ailihumaer Tuerxun, Peng Hongyu, Fujie Fumihiro, Raghothamachar Balaji, Dudley Michael, Harada Shunta, Ujihara Toru
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS Vol. 271 2021.9
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Two-Step Nanoparticle Crystallization via DNA-Guided Self-Assembly and the Nonequilibrium Dehydration Process Open Access
Sumi Hayato, Ohta Noboru, Sekiguchi Hiroshi, Harada Shunta, Ujihara Toru, Tsukamoto Katsuo, Tagawa Miho
CRYSTAL GROWTH & DESIGN Vol. 21 ( 8 ) page： 4506 - 4515 2021.8
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Y Local Atomic Structures for Tunable Ordered Arrangements of Crystallographic Shear Planes in Titanium-Chromium Oxide Natural Superlattices Reviewed Open Access
Harada Shunta, Sugimoto Shunya, Kosaka Naoki, Tagawa Miho, Ujihara Toru
JOURNAL OF PHYSICAL CHEMISTRY C Vol. 125 ( 28 ) page： 15730 - 15736 2021.7
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Control of microstructure and mechanical properties of sintered aluminum nitride through addition of aluminum nitride whiskers Reviewed Open Access
Kondo Naoki, Shimamura Akihiro, Hotta Mikinori, Shimizu Hiroki, Ujihara Toru, Ohnishi Yoshihiro
JOURNAL OF ASIAN CERAMIC SOCIETIES Vol. 9 ( 3 ) page： 1248 - 1254 2021.7
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Ordered Arrangement of Planar Faults with Picoscale Perfection in Titanium Oxide Natural Superlattices Reviewed Open Access
Harada Shunta, Kosaka Naoki, Tagawa Miho, Ujihara Toru
JOURNAL OF PHYSICAL CHEMISTRY C Vol. 125 ( 20 ) page： 11175 - 11181 2021.5
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Synchrotron X-ray topographic image contrast variation of screw-type basal plane dislocations located at different depths below the crystal surface in 4H-SiC Reviewed
Fujie Fumihiro, Peng Hongyu, Ailihumaer Tuerxun, Raghothamachar Balaji, Dudley Michael, Harada Shunta, Tagawa Miho, Ujihara Toru
ACTA MATERIALIA Vol. 208 2021.4
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Geometrical design of a crystal growth system guided by a machine learning algorithm Reviewed
Yu Wancheng, Zhu Can, Tsunooka Yosuke, Huang Wei, Dang Yifan, Kutsukake Kentaro, Harada Shunta, Tagawa Miho, Ujihara Toru
CRYSTENGCOMM Vol. 23 ( 14 ) page： 2695 - 2702 2021.4
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Intensity Interference in a Coherent Spin-Polarized Electron Beam Open Access
Kuwahara Makoto, Yoshida Yuya, Nagata Wataru, Nakakura Kojiro, Furui Masato, Ishida Takafumi, Saitoh Koh, Ujihara Toru, Tanaka Nobuo
PHYSICAL REVIEW LETTERS Vol. 126 ( 12 ) 2021.3
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Chiral Optical Force Generated by a Superchiral Near-Field of a Plasmonic Triangle Trimer as Origin of Giant Bias in Chiral Nucleation: A Simulation Study Reviewed
Niinomi Hiromasa, Sugiyama Teruki, Cheng An-Chieh, Tagawa Miho, Ujihara Toru, Yoshikawa Hiroshi Y., Kawamura Ryuzo, Nozawa Jun, Okada Junpei T., Uda Satoshi
JOURNAL OF PHYSICAL CHEMISTRY C Vol. 125 ( 11 ) page： 6209 - 6221 2021.3
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Adaptive process control for crystal growth using machine learning for high-speed prediction: application to SiC solution growth
Dang Yifan, Zhu Can, Ikumi Motoki, Takaishi Masaki, Yu Wancheng, Huang Wei, Liu Xinbo, Kutsukake Kentaro, Harada Shunta, Tagawa Miho, Ujihara Toru
CRYSTENGCOMM Vol. 23 ( 9 ) page： 1982 - 1990 2021.3
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Detection and classification of dislocations in GaN by optical microscope using birefringence
Atsushi Tanaka, Shunta Harada, Kenji Hanada, Yoshio Honda, Toru Ujihara, and Hiroshi Amano,
Proc. SPIE 11706, Light-Emitting Devices, Materials, and Applications XXV ( 117060Y ) 2021.3