複合金属酸化物材料から構成される単結晶ナノワイヤの創成と熱電変換素子

2015 Fiscal Year Research-status Report

• Project/Area Number: 15K13288
• Research Institution: Kyushu University
• Principal Investigator: 柳田 剛 九州大学, 先導物質化学研究所, 教授 (50420419)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: ナノワイヤ

Outline of Annual Research Achievements

熱エネルギーを電気エネルギーに変換する熱電効果は低炭素社会に向けた重要な科学技術であるが、バルク材料ではその熱電変換効率の限界という大きな原理的問題を抱えている。本研究では、自己組織化的に組みあがる複合酸化物1次元ナノ構造体を用いて理論予測されている低次元化によるゼーベック係数の向上と熱伝導率の低下を検証し、バルク酸化物材料では到達し得ない熱電変換効率を実証することを目的とする。我々の強みはこれまでに構築した熱電酸化物材料を10nm以下のナノワイヤ構造化する形成技術と単一ナノワイヤ物性測定技術にある。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

1本の金属酸化物ナノワイヤの熱起電力を精密に測定するシステムを構築し、その妥当性の検証に成功しているため。

Strategy for Future Research Activity

1本の金属酸化物ナノワイヤの熱起電力測定のみならず、熱伝導率を精密に測定するシステムを構築し、従来測定技術では埋もれていた単結晶ナノワイヤ物性を抽出する。

Research Products

• [Journal Article] Rational Concept for Designing Vapor-Liquid-Solid Growth of Single Crystalline Metal Oxide Nanowires (2015)
  • Author(s): Klamchuen, A., M. Suzuki, K. Nagashima, H. Yoshida, M. Kanai, F. W. Zhuge, Y. He, G. Meng, S. Kai, S. Takeda, T. Kawai and T. Yanagida
  • Journal Title: Nano Letters Volume: 15 Pages: 6406-6412
  • DOI: 10.1021/acs.nanolett.5b01604
  • Peer Reviewed
• [Journal Article] Self-assembled Nanowire Arrays as Three-dimensional Nanopores for Filtration of DNA Molecules (2015)
  • Author(s): Rahong, S., T.Yasui, T.Yanagida, K.Nagashima, M.Kanai, G.Meng, Y.He, F.Zhuge, N.Kaji, T.Kawai, Y.Baba
  • Journal Title: Analytical Sciences Volume: 31 Pages: 153-157
  • Peer Reviewed
• [Journal Article] Three-dimensional Nanowire Structures for Ultra-Fast Separation of DNA, Protein and RNA Molecules (2015)
  • Author(s): Rahong, S., T.Yasui, T.Yanagida, K.Nagashima, M.Kanai, G.Meng, Y.He, F.Zhuge, N.Kaji, T.Kawai, Y.Baba
  • Journal Title: Scientific Reports(Nature Publishing Group) Volume: 5 Pages: 10584
  • Peer Reviewed
• [Presentation] Single Crystalline Metal Oxide Nanowires and Their Promises (2016)
  • Author(s): Takeshi Yanagida
  • Organizer: ISPlasma2016 / IC-PLANTS2016
  • Place of Presentation: Nagoya
  • Year and Date: 2016-03-08
  • Int'l Joint Research / Invited
• [Presentation] Single Crystalline Metal Oxide Nanowires (2016)
  • Author(s): Takeshi Yanagida
  • Organizer: 3rd NUS-IMCE Workshop
  • Place of Presentation: Fukuoka
  • Year and Date: 2016-02-15
  • Int'l Joint Research
• [Presentation] Oxide Nanowire Devices for Analyzing Biomolecules (2015)
  • Author(s): Takeshi Yanagida
  • Organizer: Pacifichem 2015
  • Place of Presentation: USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] 単結晶金属酸化物ナノワイヤの材料設計とそのデバイス展開 (2015)
  • Author(s): 柳田 剛
  • Organizer: 電子情報技術産業協会 第5回「量子現象利用デバイス技術分科会」
  • Place of Presentation: 新化学技術推進協会
  • Year and Date: 2015-12-07
  • Invited
• [Presentation] Single Crystalline Metal Oxide Nanowires (2015)
  • Author(s): Takeshi Yanagida
  • Organizer: CEMS Topical Meeting on Oxide Interfaces 2015
  • Place of Presentation: Wako
  • Year and Date: 2015-10-05 – 2015-10-06
  • Int'l Joint Research / Invited
• [Presentation] Flexible Molecule Sensor using Single Crystalline Metal Oxide Nanowires (2015)
  • Author(s): Takeshi Yanagida
  • Organizer: International Symposium on Thin Film Technologies for Flexible Devices
  • Place of Presentation: Nagoya
  • Year and Date: 2015-09-14
  • Int'l Joint Research / Invited
• [Presentation] Emerging Oxide Nanowires: Creation Concept and Their Promises for Novel Nanoscale Devices (2015)
  • Author(s): Takeshi Yanagida
  • Organizer: 228th ECS Meeting
  • Place of Presentation: USA
  • Year and Date: 2015-09-13
  • Int'l Joint Research / Invited
• [Presentation] 金属酸化物単結晶ナノワイヤ (2015)
  • Author(s): 柳田 剛
  • Organizer: 第3回・酸化物研究の新機軸に向けた学際討論会
  • Place of Presentation: 東北大学
  • Year and Date: 2015-08-04
  • Invited
• [Presentation] Ultra Low Power Consumed Molecule Sensing on Single Crystalline Nanowires (2015)
  • Author(s): Takeshi Yanagida
  • Organizer: International Workshop on Molecular Electronics
  • Place of Presentation: Shiretoko
  • Year and Date: 2015-08-03 – 2015-08-06
  • Int'l Joint Research
• [Presentation] 金属酸化物単結晶ナノワイヤ (2015)
  • Author(s): 柳田 剛
  • Organizer: 日本セラミックス協会 第49回基礎科学部会セミナー
  • Place of Presentation: ウインク愛知
  • Year and Date: 2015-07-17
  • Invited
• [Presentation] 金属酸化物単結晶ナノワイヤ (2015)
  • Author(s): 柳田 剛
  • Organizer: 応用物理学会関西支部 平成２7年度第１回講演会
  • Place of Presentation: イーグレ姫路
  • Year and Date: 2015-06-22
  • Invited
• [Presentation] Nanowires Alignment on Micrometer Scale Hydrophilic Patterns by Blade-coating Method (2015)
  • Author(s): He Yong and Takeshi Yanagida
  • Organizer: EMN Qingdao Meeting -- Energy Materials & Nanotechnology
  • Place of Presentation: China
  • Year and Date: 2015-06-14 – 2015-06-17
  • Int'l Joint Research
• [Book] Resistive Switching: From Fundamentals of Nanoionic Redox Processes to Memristive Device Applications, Ch23.Bottom-Up Approaches for Resistive Switching Memories (2016)
  • Author(s): S. Spiga, T. Yanagida and T. Kawai
  • Total Pages: 784
  • Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
• [Book] Magnetic Nano- and Microwires, Design, Synthesis, Properties and Applications, Ch16: Oxide nanowires for non-volatile memory applications (2015)
  • Author(s): K. Nagashima and T. Yanagida
  • Total Pages: 870
  • Publisher: Woodhead Publishing