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渡辺 健太郎  ワタナベ ケンタロウ

教員組織学術研究院(繊維学系)電話番号
教育組織繊維学部 機械・ロボット学科 機能機械学コースFAX番号
職名准教授メールアドレス
住所〒386-8567 長野県上田市常田3-15-1ホームページURLhttp://fiber.shinshu-u.ac.jp/watanabe-lab/

更新日:2021/09/09

プロフィール

研究分野
ナノ材料科学
ナノ構造物理
結晶工学
応用物性
薄膜、表面界面物性
キーワード:カソードルミネッセンス , 顕微分光 , 電子線誘起電流 , その場測定 , リソグラフィー , 結晶成長 , 半導体ナノ結晶 , 酸化亜鉛 , シリコン , 遷移金属カルコゲナイド
所属学会
所属学会
応用物理学会

所属学会役職担当
2018- , 応用物理学会 研究会, フォノンエンジニアリング研究会 , 運営委員
2017- , SSDM (International Conference on Solid State Devices and Materials) , 論文委員 (Area 11 Advanced Materials: Synthesis / Crystal Growth / Characterization)
学歴
出身大学院
2010 , 東京大学 , 大学院工学系研究科 , 物理工学専攻
2006 , 東京大学 , 大学院工学系研究科 , 物理工学専攻

出身学校・専攻等(大学院を除く)
2004 , 東京工業大学 , 理学部 , 物理学科
2000 , 開成中学校・高等学校

取得学位
博士(工学) , 東京大学
受賞学術賞
2021 , 針塚賞(研究室指導学生) , 研究室指導学生の卒業論文発表に対する受賞
2020 , 応用物理学会 薄膜・表⾯物理分科会 第4回 論⽂賞
2019 , 東北大学 金属材料研究所 附属新素材共同研究開発センター 共同利用研究課題 最優秀賞
2016 , 応用物理学会 ポスターアワード
2013 , ACSIN12/ICSPM-21 Best Poster Award
2013 , 応用物理学会 ポスターアワード
2012 , NSS-7 Best Poster Award
研究職歴等
研究職歴
2020- , 信州大学 繊維学部 機械・ロボット学科 機能機械学コース 准教授
2019-2020 , 国立研究開発法人物質・材料研究機構 情報統合型物質・材料研究拠点 材料データ科学グループ NIMS招聘研究員
2018-2020 , 東北大学 材料科学高等研究所 非平衡材料グループ 准教授
2015-2018 , 大阪大学 大学院基礎工学研究科 システム創成専攻 電子・光科学領域 助教
2012-2018 , 物質・材料研究機構 国際ナノアーキテクトニクス研究拠点 外来研究者
2012-2015 , 筑波大学 数理物質科学研究科(系) 研究員
2010-2012 , 物質・材料研究機構 国際ナノアーキテクトニクス研究拠点 NIMSポスドク研究員

研究活動業績

研究業績(著書・
発表論文等)
論文
Vapor Phase Dealloying Kinetics of MnZn Alloys
Acta Materialia,212:116916 2021(Jun. 15)
Author:Zhen Lu, Fan Zhang, Daixiu Wei, Jiuhui Han, Yanjie Xia, Jing Jiang, Mingwang Zhong; Akihiko Hirata, Kentaro Watanabe, Alain Karma, Jonah Erlebacher, Mingwei Chen


3D Bimodal Porous Amorphous Carbon with Self-Similar Porosity by Low-Temperature Sequential Chemical Dealloying
Chemistry of Materials,33(3):1013-1021 2021(Feb. 01)
Author:Jiuhui Han, Hongping Li, Zhen Lu, Gang Huang, Isaac Johnson, Kentaro Watanabe, Mingwei Chen


Spin-orbit torque generated by a ferromagnet / a metallic glass bilayer
Applied Physics Express,13(5):053002 2020(Apr. 20)
Author:Satoshi Iihama, Yuya Koike, Zhen Lu, Kentaro Watanabe, Mingwei Chen, Shigemi Mizukami


Ultrastable Silicon Anode by Three-Dimensional Nanoarchitecture Design
ACS Nano,14(4):4374-4382 2020(Mar. 18)
Author:Gang Huang, Jiuhui Han, Zhen Lu, Daixiu Wei, Hamzeh Kashani, Kentaro Watanabe, Mingwei Chen


The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading
Acta Materialia,188:203-214 2020(Feb. 05)
Author:Fan Zhang, Yu Ren, Zhiqing Yang, Huhu Su, Zhen Lu, Chengwen Tan, Hailong Peng, Kentaro Watanabe, Bin Li, Matthew R Barnett, Mingwei Chen


Methodology of Thermoelectric Power Factor Enhancement by Nanoscale Thermal Management in Bulk SiGe Composites
ACS Applied Energy Materials,3:1235-1241 2019(Dec. 30)
Author:Shunya Sakane, Takafumi Ishibe, Masato Kashino, Kentaro Watanabe, Takeshi Fujita, Yoshinari Kamakura, Nobuya Mori, Yoshiaki Nakamura


リチウム空気電池における反応中のダイナミクス観察
「リチウムイオン電池の分析、解析と評価技術 事例集」,第7章(第1節):453-464 2019(Nov. 29)
Author:韓 久慧, 渡辺 健太郎, 陳 明偉


Bottom-up on surface synthesis of two-dimensional Graphene nanoribbon networks and their thermoelectric properties
Chemistry - An Asian Journal,14:4400-4407 2019(Nov. 14)
Author:Takahiro Kojima, Takahiro Nakae, Zhen Xu, Chinnusamy Saravanan, Kentaro Watanabe, Yoshiaki Nakamura, Hiroshi Sakaguchi


Three-Dimensional Nanoporous Co9S4P4 Pentlandite as a Bifunctional Electrocatalyst for Overall Neutral Water Splitting
ACS Applied Materials and Interfaces,11(4):3880-3888 2019(Jan. 07)
Author:Tan Yongwen, Luo Min, Liu Pan, Cheng Chun, Han Jiuhui, Watanabe Kentaro, Chen Mingwei


Vapor phase dealloying: a versatile approach for fabricating 3D nanoporous materials
Acta Materialia,163:161-172 2019(Jan.)
Author:Han Jiuhui, Li Cheng, Lu Zhen, Wang Hao, Wang Zhili, Watanabe Kentaro, Chen Mingwei


Enhanced thermoelectric performance of Ga-doped ZnO film by controlling crystal quality for transparent thermoelectric films
Thin Solid Films,666:185-190 2018(Nov. 30)
Author:Atsuki Tomeda, Takafumi Ishibe, Tatsuhiko Taniguchi, Ryo Okuhata, Kentaro Watanabe, Yoshiaki Nakamura


Lithiophilic 3D nanoporous nitrogen-doped graphene for dendrite-free and ultrahigh-rate lithium metal anodes
Advanced Materials,31(2):1805334 2018(Nov. 06)
Author:Huang Gang, Han Jiuhui, Zhang Fan, Wang Ziqian, Kashani Hamzeh, Watanabe Kentaro, Chen Mingwei


Methodology of thermoelectric power factor enhancement by controlling nanowire interface
ACS Applied Materials and Interfaces,10(43):37709-37716 2018(Oct. 10)
Author:Takafumi Ishibe, Atsuki Tomeda, Kentaro Watanabe, Yoshinari Kamakura, Nobuya Mori, Nobuyasu Naruse, Yutaka Mera, Yuichiro Yamashita, Yoshiaki Nakamura


Heavily Doped and Highly Conductive Hierarchical Nanoporous Graphene for Electrochemical Hydrogen Production
Angewandte Chemie International Edition,57(40):13302-13307 2018(Aug. 24)
Author:Linghan Chen,Jiuhui Han,Yoshikazu Ito,Takeshi Fujita,Gang Huang,Kailong Hu,Akihiko Hirata,Kentaro Watanabe,Mingwei Chen


Thermoelectric performances in transparent ZnO films including nanowires as phonon scatterers
Journal of Physics: Conference Series,1052:012126 2018(Jul. 26)
Author:Takafumi Ishibe, Atsuki Tomeda, Kentaro Watanabe, Yoshiaki Nakamura


Formation of various epitaxial nanodots in Si films for thermoelectric materials
Journal of Physics: Conference Series,1052:012135 2018(Jul. 26)
Author:Sakane Shunya, Watanabe Kentaro, Fujita Takeshi, Naruse Nobuyasu, Nakamura Yoshiaki


Areal density control of ZnO nanowires in physical vapor transport using Ge nanocrystals
Japanese Journal of Applied Physics,57(8S1):08NB07 2018(Jul. 17)
Author:Takafumi Ishibe, Tatsuhiko Taniguchi, Tsukasa Terada, Atsuki Tomeda, Kentaro Watanabe, Yoshiaki Nakamura


Growth of epitaxial FeGeγ nanocrystals with incommensurate Nowotny chimney-ladder phase on Si substrate
Japanese Journal of Applied Physics,57(8S1):08NB01 2018(Jun. 28)
Author:Tsukasa Terada, Takafumi Ishibe, Kentaro Watanabe, Yoshiaki Nakamura


Resistive switching characteristics of isolated core-shell iron oxide / germanium nanocrystals epitaxially grown on Si substrates
Applied Physics Letters,112(3):031601 2018(Jan. 15)
Author:Hideki Matsui, Takafumi Ishibe, Tsukasa Terada, Shunya Sakane, Kentaro Watanabe, Shotaro Takeuchi, Akira Sakai, Shigeru Kimura, Yoshiaki Nakamura


Nanostructure design for control of phonon andelectron transports
ECS Transactions,80(1):93-100 2017(Oct. 03)
Author:Nakamura Yoshiaki, Watanabe Kentaro


Epitaxial multilayers of beta-FeSi2 nanodots/Si for Si-based nanostructured electronic materials
Journal of Vacuum Science and Technology A,35(4):041402 2017(Jun. 02)
Author:Shunya Sakane, Masayuki Isogawa, Kentaro Watanabe, Jun Kikkawa, Shotaro Takeuchi, Akira Sakai, Yoshiaki Nakamura


Embedded-ZnO Nanowire Structure for High-Performance Transparent Thermoelectric Materials
Journal of Electronic Materials,46(5):3020-3024 2017(May)
Author:Takafumi Ishibe, Atsuki Tomeda, Kentaro Watanabe, Jun Kikkawa, Takeshi Fujita, Yoshiaki Nakamura


Thermal Conductivity Measurement of Thermoelectric Thin Films by a Versatility-Enhanced 2ω Method
Journal of Electronic Materials,46(5):3089-3096 2017(May)
Author:Ryo Okuhata, Kentaro Watanabe, Satoaki Ikeuchi, Akihiro Ishida, Yoshiaki Nakamura


Thermoelectric properties of epitaxial beta-FeSi2 thin films/Si(111) and enhancement approach of its thermoelectric performance
Journal of Electronic Materials,46(5):3235-3241 2017(May)
Author:Tatsuhiko Taniguchi, Shunya Sakane, Shunsuke Aoki, Ryo Okuhata, Takafumi Ishibe, Kentaro Watanabe, Takeyuki Suzuki, Takeshi Fujita, Yoshiaki Nakamura


Thermoelectric properties of epitaxial β-FeSi2 thin films grown on Si(111) substrates with various film qualities
Japanese Journal of Applied Physics,56(5S1):05DC04 2017(Apr.)
Author:Kentaro Watanabe, Tatsuhiko Taniguchi, Shunya Sakane, Shunsuke Aoki, Takeyuki Suzuki, Takeshi Fujita, Yoshiaki Nakamura


Independent control of phonon and electron transport in Si-based nanoarchitectures with epitaxial Ge nanodots
Proceedings of 1st Asian Conference onThermal Sciences 2017 (ACTS 2017),:1-3 2017(Mar.)
Author:Watanabe Kentaro,Yamasaka Shuto,Ishibe Takafumi,Sakane Shunya,Sawano Kentarou,Nakamura Yoshiaki


Effect of Fe coating of nucleation sites on epitaxial growth of Fe oxide nanocrystals on Si substrates
Japanese Journal of Applied Physics,55(8S1):08NB12 2016(Jun. 11)
Author:Takafumi Ishibe, Kentaro Watanabe, Yoshiaki Nakamura


Epitaxial iron oxide nanocrystals with memory function grown on Si substrates
Applied Physics Express,9(5):055508 2016(Apr. 25)
Author:Takafumi Ishibe, Hideki Matsui, Kentaro Watanabe, Shotaro Takeuchi, Akira Sakai, Yoshiaki Nakamura


Independent control of electrical and heat conduction by nanostructure designing for Si-based thermoelectric materials
Scientific Reports,6:28838 2016(Mar.)
Author:Shuto Yamasaka, Kentaro Watanabe, Shunya Sakane, Shotaro Takeuchi, Akira Sakai, Kentarou Sawano, Yoshiaki Nakamura


Arbitrary cross-section SEM-cathodoluminescence imaging of growth sectors and local carrier concentrations within micro-sampled semiconductor nanorods
Nature Communications,7:10609 2016(Feb. 16)
Author:Kentaro Watanabe, Takahiro Nagata, Seungjun Oh, Yutaka Wakayama, Takashi Sekiguchi, Janos Volk, Yoshiaki Nakamura


Fabrication of Carrier-Doped Si Nanoarchitecture for Thermoelectric Material by Ultrathin SiO2 Film Technique
Journal of Electronic Materials,45(3):1914-1920 2016
Author:Tomohiro Ueda, Shunya Sakane, Takafumi Ishibe, Kentaro Watanabe, Shotaro Takeuchi, Akira Sakai, Yoshiaki Nakamura


Cross-sectional electric field distributions in BaSi2 homo and BaSi2/Si hetero pn junctions
IEEE Xplore Digital Library,:0206-0208 2015(Dec.)
Author:Masakazu Baba, Kentaro Watanabe, Kosuke O. Hara, Takashi Sekiguchi, Weijie Du, Ryota Takabe, Kaoru Toko, Noritaka Usami, Takashi Suemasu


Metamorphic GaAs/GaAsBi Heterostructured Nanowires
Nano Letters,15(11):7265-7272 2015(Oct. 26)
Author:Fumitaro Ishikawa, Yoshihiko Akamatsu, Kentaro Watanabe, Fumihiko Uesugi, Shunsuke Asahina, Uwe Jahn, Satoshi Shimomura


Cathodoluminescence and Photoconductive Characteristics of Single-Crystal Ternary CdS/CdSe/CdS Biaxial Nanobelts
Small,11(13):1531-1536 2015(Apr. 01)
Author:Linfeng Hu, Jian Yan, Yong Kim, Guangtao Fei, Kentaro Watanabe, Takashi Sekiguchi, Lide Zhang, Xiaosheng Fang


Cross-sectional potential profile across a BaSi2 pn junction by Kelvin probe force microscopy
Japanese Journal of Applied Physics,54(3):030306 2015(Mar.)
Author:Daichi Tsukahara, Masakazu Baba, Kentaro Watanabe, Takashi Kimura, Kosuke O. Hara, Weijie Du, Noritaka Usami, Kaoru Toko, Takashi Sekiguchi, Takashi Suemasu


Band-Gap Deformation Potential and Elasticity Limit of Semiconductor Free-Standing Nanorods Characterized in Situ by Scanning Electron Microscope-Cathodoluminescence Nanospectroscopy
ACS Nano,9(3):2989-3001 2015(Feb. 17)
Author:Kentaro Watanabe, Takahiro Nagata, Yutaka Wakayama, Takashi Sekiguchi, Róbert Erdéryi, János Volk


Grain boundaries characterization of semiconducting BaSi2 thin films on a polycrystalline Si substrate
IEEE Xplore Digital Library,:0206-0208 2014(Oct.)
Author:Masakazu Baba, Kosuke O. Hara, Kentaro Watanabe, Weijie Du, Daichi Tsukahara, Kaoru Toko, Karolin Jiptner, Takashi Sekiguchi, Noritaka Usami, Takashi Suemasu


Nonwetting and Optical Properties of Hexagonal Boron Nitride Films
GSTF Digital Library 2014(Sep.)
Author:Amir Pakdel, Chunyi Zhi, Yoshio Bando, Kentaro Watanabe, Takashi Sekiguchi, Tomonobu Nakayama, Dmitri Golberg


Cross-sectional observation of stacking faults in 4H-SiC by KOH etching on nonpolar {1-100} face, cathodoluminescence imaging, and transmission electron microscopy
Japanese Journal of Applied Physics,53(8):081301 2014(Aug.)
Author:Yao Yongzhao, Ishikawa Yukari, Sugawara Yoshihiro, Sato Koji, Shirai Takayuki, Danno Katsunori, Suzuki Hiroshi, Sakamoto Hidemitsu, Bessho Takeshi, Dierre Benjamin, Watanabe Kentaro, Sekiguchi Takashi


Si-based new material for high-efficiency thin film solar cells
IEEE Xplore Digital Library,:69-72 2014(Jul.)
Author:Weijie Du, Masakazu Baba, Kaoru Toko, Kosuke O. Hara, Kentaro Watanabe, Takashi Sekiguchi, Noritaka Usami, Takashi Suemasu


Analysis of the electrical properties of Cr/n-BaSi2 Schottky junction and n-BaSi2/p-Si heterojunction diodes for solar cell applications
Journal of Applied Physics,115(22):223701 2014(Jun.)
Author:Weijie Du,Masakazu Baba,Kaoru Toko,Kosuke O. Hara,Kentaro Watanabe,Takashi Sekiguchi,Noritaka Usami,Takashi Suemasu
Abstract:Current status and future prospects towards BaSi2 pn junction solar cells are presented. As a preliminary step toward the formation of BaSi2 homojunction diodes, diodes with a Cr/n-BaSi2 Schottky junction and an n-BaSi2/p-Si hetero-junction have been fabricated to investigate the electrical properties of the n-BaSi2. Clear rectifying properties were observed in the current density versus voltage characteristics in both diodes. From the capacitance-voltage measurements, the build-in potential, V-D, was 0.53 V in the Cr/n-BaSi2 Schottky junction diode, and the Schottky barrier height was 0.73 eV calculated from the thermoionic emission theory; the V-D was about 1.5 V in the n-BaSi2/p-Si hetero-junction diode, which was consistent with the difference in the Fermi level between the n-BaSi2 and the p-Si. (C) 2014 AIP Publishing LLC.


Local electrical properties of n-AlInAs/i-GaInAs electron channel structures characterized by the probe-electron-beam-induced current technique
Microscopy,63(2):161-166 2014(Apr.)
Author:Kentaro Watanabe, Takeshi Nokuo, Jun Chen, Takashi Sekiguchi


Focused ion beam imaging of defects in multicrystalline Si for photovoltaic application
Acta Physica Polonica A,125(4):991-993 2014(Apr.)
Author:Yoshiji Miyamura, Takashi Sekiguchi, Jun Chen, Jianyong Li, Kentaro Watanabe, Kazuhiro Kumagai, Atsushi Ogura


Comparison of slicing-induced damage in hexagonal SiC by wire sawing with loose abrasive, wire sawing with fixed abrasive, and electric discharge machining
Japanese Journal of Applied Physics,53(7):071301 2014(Jan.)
Author:Yukari Ishikawa, Yong-Zhao Yao, Yoshihiro Sugawara, Koji Sato, Yoshihiro Okamoto, Noritaka Hayashi, Benjamin Dierre, Kentaro Watanabe, Takashi Sekiguchi


Evaluation of minority carrier diffusion length of undoped n-BaSi2 epitaxial thin films on Si(001) substrates by electron-beam-induced-current technique
Japanese Journal of Applied Physics,53(7):078004 2014
Author:Masakazu Baba, Kentaro Watanabe, Kosuke O. Hara, Kaoru Toko, Takashi Sekiguchi, Noritaka Usami, Takashi Suemasu


Evaluation of potential variations around grain boundaries in BaSi2 epitaxial films by Kelvin probe force microscopy
Applied Physics Letters,103(14):142113 2013(Oct.)
Author:Masakazu Baba, Sadahiro Tsurekawa, Kentaro Watanabe, Weijie Du, Kaoru Toko, Kosuke O. Hara, Noritaka Usami, Takashi Sekiguchi, Takashi Suemasu


Conductive optical-fiber STM probe for local excitation and collection of cathodoluminescence at semiconductor surfaces
Optics Express,21(16):19261-19268 2013(Aug.)
Author:Kentaro Watanabe, Yoshiaki Nakamura, Masakazu Ichikawa


Cathodoluminescence Modulation of ZnS Nanostructures by Morphology, Doping, and Temperature
Advanced Functional Materials,23(29):3701-3706 2013(Aug.)
Author:Hui Liu, Linfeng Hu, Kentaro Watanabe, Xinhua Hu, Benjamin Dierre, Bongsoo Kim, Takashi Sekiguchi, Xiaosheng Fang


High-yield boron nitride nanosheets from 'chemical blowing': towards practical applications in polymer composites
Journal of Physics-Condensed Matter,24(31):314205 2012(Jul.)
Author:Wang Xuebin, Pakdel Amir, Zhi Chunyi, Watanabe Kentaro, Sekiguchi Takashi, Golberg Dmitri, Bando Yoshio


Cross sectional CL study of the growth and annihilation of pit type defects in HVPE grown (0001) thick GaN
Journal of Crystal Growth,351(1):83-87 2012(Apr.)
Author:Woong Lee, Hyunjae Lee, Seunghwan Park, Kentaro Watanabe, Kazuhiro Kumagai, Takahumi Yao, Jiho Chang, Takashi Sekiguchi


Scanning tunneling microscope-based local electroluminescence spectroscopy of p-AlGaAs/i-GaAs/n-AlGaAs double heterostructure
Journal of Vacuum Science & Technology B,30(2):021802 2012(Feb.)
Author:Watanabe Kentaro, Ichikawa Masakazu, Nakamura Yoshiaki, Kuboya Shigeyuki, Katayama Ryuji, Onabe Kentaro


Cathodoluminescence study of nonuniformity in hydride vapor phase epitaxy-grown thick GaN films
Journal of Electron Microscopy,61(1):25-30 2012(Jan.)
Author:Lee Woong, Watanabe Kentaro, Kumagai Kazuhiro, Park Seunghwan, Lee Hyunjae, Yao Takafumi, Chang Jiho, Sekiguchi Takashi


Facile synthesis of vertically aligned hexagonal boron nitride nanosheets hybridized with graphitic domains
Journal of Materials Chemistry,22(11):4818-4824 2012(Jan.)
Author:Pakdel Amir, Wang Xuebin, Zhi Chunyi, Bando Yoshio, Watanabe Kentaro, Sekiguchi Takashi, Nakayama Tomonobu, Golberg Dmitri


Crystal growth and characterization of gallium oxynitride nanowires grown on seed crystals
Journal of Crystal Growth,337(1):87-92 2011(Oct.)
Author:Masubuchi Yuji, Yamaoka Ryohei, Motohashi Teruki, Kirihara Kazuhiko, Lee Woong, Watanabe Kentaro, Sekiguchi Takashi, Kikkawa Shinichi


Development of Novel System Combining Scanning Tunneling Microscope-Based Cathodoluminescence and Electroluminescence Nanospectroscopies
Japanese Journal of Applied Physics,50(8S3):08LB08 2011(Aug.)
Author:Watanabe Kentaro, Nakamura Yoshiaki, Kuboya Shigeyuki, Katayama Ryuji, Onabe Kentaro, Ichikawa Masakazu


Nature and role of various Si-based sensitizers for Er3+ ions in Silicon-rich silicon oxide thin films
Advanced Materials Research,324:81-84 2011(Aug.)
Author:Sébastien Cueff, Christophe Labbé, Kentaro Watanabe, Benjamin Dierre, Takashi Sekiguchi, Richard Rizk


カソードルミネセンス分析
ぶんせき,(7):411-415 2011(Jul.)
Author:関口 隆史, 渡辺 健太郎


Scanning tunneling microscope-cathodoluminescence measurement of the GaAs/AlGaAs heterostructure
Journal of Vacuum Science & Technology B,27(4):1874-1880 2009(Jun.)
Author:Watanabe Kentaro, Nakamura Yoshiaki, Ichikawa Masakazu, Kuboya Shigeyuki, Katayama Ryuji, Onabe Kentaro


Local optical characterization related to Si cluster concentration in GaAs using scanning tunneling microscope cathodoluminescence spectroscopy
Japanese Journal of Applied Physics,47(7S2):6109-6113 2008(Jul.)
Author:Watanabe Kentaro, Nakamura Yoshiaki, Ichikawa Masakazu


Spatial resolution of imaging contaminations on the GaAs surface by scanning tunneling microscope-cathodoluminescence spectroscopy
Applied Surface Science,254(23):7737-7741 2008(Feb.)
Author:Watanabe Kentaro, Nakamura Yoshiaki, Ichikawa Masakazu


Measurements of local optical properties of Si-doped GaAs (110) surfaces using modulation scanning tunneling microscope cathodoluminescence spectroscopy
Journal of Vacuum Science & Technology B,26(1):195-200 2008(Jan.)
Author:Watanabe Kentaro, Nakamura Yoshiaki, Ichikawa Masakazu


Quantum fluctuation of tunneling current in individual Ge quantum dots induced by a single-electron transfer
Applied Physics Letters,90(15):153104-153106 2007(Apr.)
Author:Nakamura Yoshiaki, Ichikawa Masakazu, Watanabe Kentaro, Hatsugai Yasuhiro


Observation of the quantum-confinement effect in individual Ge nanocrystals on oxidized Si substrates using scanning tunneling spectroscopy
Applied Physics Letters,87(13):133119-133121 2005(Sep.)
Author:Yoshiaki Nakamura, Kentaro Watanabe, Yo Fukuzawa, Masakazu Ichikawa


講演・口頭発表等
熱電発電応用に向けたSi自立ナノワイヤ配列への高濃度ドーピング
2021年秋季<第82回>応用物理学会 2021(Sep. 12)
Presenter:田中 幾多郎、渡辺 健太郎


酸素雰囲気アニールによるZnO自立ナノロッドの電気絶縁化とそのナノ分光・電気特性評価
2021年秋季<第82回>応用物理学会 2021(Sep. 10)
Presenter:村田 雄生、宮嶋 航汰、渡辺 健太郎


単一自立ナノワイヤのその場差分I-V測定による電気伝導率評価
2021年秋季<第82回>応用物理学会 2021(Sep. 10)
Presenter:宮嶋 航汰、村田 雄生、渡辺 健太郎


超高面密度ZnOナノロッド配列のヘテロエピタキシャル溶液成長とその周期構造化
2021年秋季<第82回>応用物理学会 2021(Sep. 10)
Presenter:目片 祥、村田 雄生、渡辺 健太郎


Nanospectroscopic / In-situ Electrical Analyses of Indivudial ZnO Nanowires Insulated by Thermal Annealing in Oxygen Ambient
2021 International Conference on Solid State Devices and Materials (SSDM 2021) 2021(Sep. 07)
Presenter:Yuki Murata, Kota Miyajima, Kentaro Watanabe


In-situ Electrical Conductivity Measurements of Individual Free-standing Nanowires Grown on a Substrate
2021 International Conference on Solid State Devices and Materials (SSDM 2021) 2021(Sep. 07)
Presenter:Kota Miyajima, Yuki Murata, Kentaro Watanabe


Heteroepitaxial Chemical Bath Deposition of Ultra-High Density ZnO Nanorod Arrays on Au films and Au Periodic Templates
2021 International Conference on Solid State Devices and Materials (SSDM 2021) 2021(Sep. 07)
Presenter:Sho Mekata, Yuki Murata, Kentaro Watanabe


Impurity Doping and Ohmic Contact Fabrication on Free-Standing Si Nanowire Arrays for Thermoelectric Applications
2021 International Conference on Solid State Devices and Materials (SSDM 2021) 2021(Sep. 07)
Presenter:Ikutaroh Tanaka, Kentaro Watanabe


顕微CL法を用いた単原子層シートのナノスケール発光/吸収分光
2020年秋季<第81回>応用物理学会 2020(Sep. 10)
Presenter:渡辺 健太郎、衣 瑋、陳 君、窪谷 茂幸


[Invited] Nanospectroscopic investigation of individual free-standing semiconductor nanowires using nanoprobe-cathodoluminscence techniques
2018 IEEE 8th International Conference on Nanomaterials: Application & Properties (NAP-2018) 2018(Sep. 12)
Presenter:Kentaro Watanabe


[Invited] A versatile thermal conductivity measurement of free-standing nanowire array structures using embedding organic material films
2017 Global Research Efforts on Energy and Nanomaterials (GREEN 2017) 2017(Dec. 22)
Presenter:Kentaro Watanabe,Yoshiaki Nakamura


[招待講演] Nanoprobe-CL法による半導体単結晶自立ナノワイヤの顕微物性評価
第8回真空・表面科学若手研究会 2017(Oct. 27)
Presenter:渡辺健太郎


[Invited] Nanospectroscopic investigation of individual free-standing semiconductor nanowires using nanoprobe-cathodoluminscence techniques
SSDM 2017 2017(Sep. 22)
Presenter:Kentaro Watanabe


[招待講演] Nanoprobe-CL法による半導体ナノ結晶の顕微物性評価
2016年春季<第63回>応用物理学会 2016(Mar. 19)
Presenter:渡辺 健太郎
Abstract:分科企画シンポジウム


[依頼講演] 半導体ナノワイヤ歪変調バンドギャップのその場顕微評価
国際ナノテクノロジー総合展・技術会議(nano tech 2015) 2015(Jan. 30)
Presenter:渡辺 健太郎,関口 隆史


[依頼講演] 半導体ナノワイヤのバンド端変形ポテンシャルと曲げ歪・表面弾性
SATテクノロジー・ショーケース2015 2015(Jan. 21)
Presenter:渡辺 健太郎,関口 隆史

研究費
科学研究費補助金(研究代表者)
2020 - 2022 , 圧電体自立ナノロッド配列を用いた高温環境下の自立圧電デバイスの創出 , 基盤研究(B)
2019 - 2023 , 低次元半導体ナノ構造の超高密度配列の実現と革新的エネルギーデバイスの創出 , 文部科学省 卓越研究員事業
2018 - 2019 , ナノ構造の金属材料における評価と光学を使った特性の研究 , 特別研究員奨励費
2018 - 2018 , Pd系金属ガラスの相分離組織に関する微視的観察 , 特別研究員奨励費
2017 - 2019 , ナノ弾性の顕在化による超高面密度ZnO自立ナノロッド配列の圧電電荷出力の向上 , 基盤研究(C)
2014 - 2015 , 溶液成長ZnOナノロッド圧電素子の圧電性・弾性評価と成長制御による圧電応答改善 , 若手研究(B)
2011 - 2012 , 絶縁性ナノ構造の発光特性評価に適したカソードルミネッセンス顕微分光法の開発 , 若手研究(B)

科学研究費補助金(研究分担者)
2018 - 2019 , アモルファス系電池用材料の局所原子配列と充放電機構 , 基盤研究(A)

その他公的資金
2019 - 2019 , 数学・データ科学を用いた原子層トランジスタ材料の創出
2019 - 2019 , Materials informatics-guided nano-fabrication and nano-characterization of hetero-nanostructure monolayers for transparent flexible 2D electronics
2018 - 2018 , He-ion beam lithography-assisted CVD synthesis and structural / optoelectronic characterization of nanometric lateral heterostructure in semiconducting monolayered transition metal dichalcogenides

教育活動実績

授業等
2020 , 前期 , 機能機械学実験・実習Ⅰ , B2前期・金3限~4限
2020 , 前期 , エネルギー変換工学 , B3前期・水1限
2020 , 前期 , 機能機械学演習Ⅰ , B2前期月3限(3回分)
2020 , 後期 , 電子デバイス材料学特論 , M後期・月2限
2020 , 後期 , 機能機械学実験・実習Ⅱ , B2後期・金3限~4限
2020 , 後期 , 熱力学Ⅱ , B2後期・月3限

社会活動実績

社会活動等
メディア・報道
201905 , 物質・材料研究機構、東北大学 , 2019年度NIMS-Tohoku 戦略的共同研究パートナー , インターネットメディア, https://www.nims.go.jp/news/press/2019/04/hdfqf100000d4fbo-att/201904260.pdf
20131120 , Advances in Engineering, Canada , Research Highlight "Conductive optical-fibre STM probe for local excitation and collection of cathodoluminescence at semiconductor surfaces" , インターネットメディア, https://advanceseng.com/general-engineering/conductive-optical-fiber-stm-probe-local-excitation-collection-cathodoluminescence-semiconductorsurfaces/

その他社会活動
20160401 - 20180331 , 科学技術振興機構『グローバルサイエンスキャンパス』委託事業 「大阪大学SEEDSプログラム」 , 講師, 企画 , 施設一般公開, 高校生対象