Akira KUSABA

DFT modeling of unintentional oxygen incorporation enhanced by magnesium in GaN(0001) and AlN(0001) growth surfaces during metalorganic vapor phase epitaxy

Akira Kusaba, Romeo Marcel Kurniawan, Pawel Kempisty, Yoshihiro Kangawa

Physica Status Solidi B, 2100430:1-2100430:7, Feb 4, 2022 Peer-reviewedLead authorCorresponding author

Exploration of a large-scale reconstructed structure on GaN(0001) surface by Bayesian optimization

Akira Kusaba, Yoshihiro Kangawa, Tetsuji Kuboyama, Atsushi Oshiyama

Applied Physics Letters, 120 021602:1-021602:5, Jan 10, 2022 Peer-reviewedLead authorCorresponding author

A new combination of Hankel and sparsity-promoting dynamic mode decompositions and its application to the prediction of plasma turbulence

Akira Kusaba, Tetsuji Kuboyama, Kilho Shin, Makoto Sasaki, Shigeru Inagaki

Japanese Journal of Applied Physics, 61 SA1011:1-SA1011:5, Dec 15, 2021 Peer-reviewedLead authorCorresponding author

Theoretical study on the effect of H2 and NH3 on trimethylgallium decomposition process in GaN MOVPE

Soma Sakakibara, Kenta Chokawa, Masaaki Araidai, Akira Kusaba, Yoshihiro Kangawa, Kenji Shiraishi

Japanese Journal of Applied Physics, 60(4) 045507:1-045507:6, Apr 8, 2021 Peer-reviewed

Unsupervised Feature Value Selection Based on Explainability

Kilho Shin, Kenta Okumoto, David Lawrence Shepard, Akira Kusaba, Takako Hashimoto, Jorge Amari, Keisuke Murota, Junnosuke Takai, Tetsuji Kuboyama, Hiroaki Ohshima

Revised Selected Papers of the 12th International Conference on Agents and Artificial Intelligence (ICAART 2020), 421-444, Feb 13, 2021 Peer-reviewed

Progress in Modeling Compound Semiconductor Epitaxy: Unintentional Doping in GaN MOVPE

Yoshihiro Kangawa, Akira Kusaba, Pawel Kempisty, Kenji Shiraishi, Shugo Nitta, Hiroshi Amano

Crystal Growth & Design, 21(3) 1878-1890, Feb 1, 2021 Peer-reviewed

Facet stability of GaN during tri-halide vapor phase epitaxy: an ab initio-based approach

Daichi Yosho, Yuriko Matsuo, Akira Kusaba, Pawel Kempisty, Yoshihiro Kangawa, Hisashi Murakami, Akinori Koukitu

CrystEngComm, 23(6) 1423-1428, Jan 15, 2021 Peer-reviewed

Unsupervised Clustering based on Feature-value / Instance Transposition Selection

Akira Kusaba, Takako Hashimoto, Kilho Shin, David Shepard, Tetsuji Kuboyama

Proceedings of the IEEE Region 10 Conference 2020 (TENCON 2020), 1192-1197, Nov 19, 2020 Peer-reviewedLead authorCorresponding author

Predictive Nonlinear Modeling by Koopman Mode Decomposition

Akira Kusaba, Kilho Shin, Dave Shepard, Tetsuji Kuboyama

Proceedings of the International Conference on Data Mining Workshops 2020 (ICDMW 2020), 811-819, Nov 17, 2020 Peer-reviewedLead authorCorresponding author

Twitter Topic Progress Visualization using Micro-Clustering

Takako Hashimoto, Akira Kusaba, Dave Shepard, Tetsuji Kuboyama, Kilho Shin, Takeaki Uno

Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods (ICPRAM 2020), 585-592, Feb 22, 2020 Peer-reviewed

Thermodynamic analysis for nonpolar III-nitride surfaces under metalorganic vapor-phase epitaxy conditions

Tsunashi Shimizu, Yuki Seta, Toru Akiyama, Abdul Muizz Pradipto, Kohji Nakamura, Tomonori Ito, Akira Kusaba, Yoshihiro Kangawa

Japanese Journal of Applied Physics, 59(2) 028003:1-028003:4, Jan 27, 2020 Peer-reviewed

Sparsity-Promoting Dynamic Mode Decomposition of Plasma Turbulence

Akira Kusaba, Tetsuji Kuboyama, Shigeru Inagaki

Plasma and Fusion Research, 15 1301001:1-1301001:4, Jan 6, 2020 Peer-reviewedLead authorCorresponding author

Time Series Electricity Consumption Analysis using Non-negative Matrix Factorization

Akira Kusaba, Tetsuji Kuboyama, Takako Hashimoto

Proceedings of the 10th International Conference on Awareness Science and Technology (iCAST 2019), 1-6, Oct 23, 2019 Peer-reviewedLead authorCorresponding author

Thermodynamic analysis of semipolar GaN and AlN under metalorganic vapor phase epitaxy growth conditions

Yuki Seta, Abdul Muizz Pradipto, Toru Akiyama, Kohji Nakamura, Tomonori Ito, Akira Kusaba, Yoshihiro Kangawa

Japanese Journal of Applied Physics, 58(SC) SC1014:1-SC1014:9, May 1, 2019 Peer-reviewed

CH4 Adsorption Probability on GaN(0001) and (000-1) during Metalorganic Vapor Phase Epitaxy and Its Relationship to Carbon Contamination in the Films

Akira Kusaba, Guanchen Li, Pawel Kempisty, Michael R. von Spakovsky, Yoshihiro Kangawa

Materials, 12(6) 972:1-972:14, Mar 23, 2019 Peer-reviewedLead authorCorresponding author

DFT modeling of carbon incorporation in GaN(0001) and GaN(000-1) metalorganic vapor phase epitaxy

Pawel Kempisty, Yoshihiro Kangawa, Akira Kusaba, Kenji Shiraishi, Stanislaw Krukowski, Michal Bockowski, Koichi Kakimoto, Hiroshi Amano

Applied Physics Letters, 111(14) 141602:1-141602:5, Oct 2, 2017 Peer-reviewed

Modeling the Non-Equilibrium Process of the Chemical Adsorption of Ammonia on GaN(0001) Reconstructed Surfaces Based on Steepest-Entropy-Ascent Quantum Thermodynamics

Akira Kusaba, Guanchen Li, Michael R. von Spakovsky, Yoshihiro Kangawa, Koichi Kakimoto

Materials, 10(8) 948:1-948:13, Aug 15, 2017 Peer-reviewedLead authorCorresponding author

Thermodynamic analysis of (0001) and (000-1) GaN metalorganic vapor phase epitaxy

Akira Kusaba, Yoshihiro Kangawa, Pawel Kempisty, Hubert Valencia, Kenji Shiraishi, Yoshinao Kumagai, Koichi Kakimoto, Akinori Koukitu

Japanese Journal of Applied Physics, 56(7) 070304:1-070304:4, Jun 8, 2017 Peer-reviewedLead authorCorresponding author

Advances in modeling semiconductor epitaxy: Contributions of growth orientation and surface reconstruction to InN metalorganic vapor phase epitaxy

Akira Kusaba, Yoshihiro Kangawa, Pawel Kempisty, Kenji Shiraishi, Koichi Kakimoto, Akinori Koukitu

Applied Physics Express, 9(12) 125601:1-125601:4, Nov 17, 2016 Peer-reviewedLead authorCorresponding author

Theoretical approach to surface reconstruction of InN(0001) during raised-pressure metalorganic vapor-phase epitaxy

Akira Kusaba, Yoshihiro Kangawa, Yoshio Honda, Hiroshi Amano, Koichi Kakimoto

Japanese Journal of Applied Physics, 55(5S) 05FM01:1-05FM01:4, Feb 26, 2016 Peer-reviewedLead authorCorresponding author

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