ヘテロナノワイヤを用いた分子素子

2014 Fiscal Year Annual Research Report

• Project Area: Molecular Architectonics: Orchestration of Single Molecules for Novel Function
• Project/Area Number: 26110517
• 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): 2014-04-01 – 2016-03-31
• Keywords: 酸化物ナノワイヤ

Outline of Annual Research Achievements

本提案研究では、微細加工技術に依存せずに分子素子の形成を可能とする“単結晶ヘテロナノワイヤ分子素子”とその機能を実証することを目的とする。分子素子を形成する従来法は、走査プローブ顕微鏡法、機械的破断法、微細加工技術に立脚したナノギャップ法に大別することが出来るが、本新学術領域が目指す分子素子の組織化を実現するためには、従来法の枠組みを超えて分子素子が電極と共に内部に既に設計されているナノ構造が理想の形態といえる。ヘテロナノワイヤ構造は、１分子の大きさに対応したナノギャップを原子堆積法によりナノワイヤ構造内部に実現することを可能とし、加えてナノワイヤ構造自身が引き出し電極の役割をも果たす極めて魅力的なナノ構造である。このナノ構造の実現により、有機合成化学研究者が合成プロセスの延長上で電極と結合した分子素子を形成する事が可能となる。

Current Status of Research Progress

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

Reason

ヘテロ構造を単結晶ナノワイヤ構造内に形成させる為に、金属触媒を介したVapor-Liquid-Solid(VLS)反応法を用いる。VLS反応法では、供給した原料が固液界面のみに絶対選択的に結晶成長することが可能となり、所望の原料をシーケンシャルに供給することで狙いのヘテロ構造をナノワイヤ構造内部に実現する。これまでにVLS反応法を用いて機能性酸化物材料をナノワイヤ構造化する技術を蓄積しており、これらの科学技術を駆使することによって分子素子を実現する新しいナノワイヤ構造を実証した。

Strategy for Future Research Activity

“分子サイズのナノギャップと電極構造が内包されたナノワイヤ構造体”を用いて、単一分子素子と電流検知型の分子認識機能を実証する。本目標を達成するために、①機能性分子をナノワイヤとハイブリッド化し、②形成された単一分子素子の電気伝導度を検証し、③雰囲気中の微量ターゲット（各種ガスや金属イオン）を電流変化として検出する分子認識機能を実証する。

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: Nanoletters Volume: 15 Pages: 6406-6412
  • DOI: 10.1021/ass.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
• [Journal Article] Nanoscale Size-Selective Deposition of Nanowires by Micrometer Scale Hydrophilic Patterns (2014)
  • Author(s): He, Y., K.Nagashima, M.Kanai, G.Meng, F.Zhuge, S.Rahong, X.Li, T.Kawai and T.Yanagida
  • Journal Title: Scientific Reports(Nature Publishing Group) Volume: 4 Pages: 5943
  • Peer Reviewed
• [Journal Article] Modulation of Thermoelectric Power Factor via Radial Dopant Inhomogeneity in B-doped Si Nanowires (2014)
  • Author(s): Fuwei, Z., T.Yanagida, N.Fukata, K.Uchida, M.Kanai, K.Nagashima, G.Meng, Y.He, S.Rahong, X.Li and T.Kawai
  • Journal Title: Journal of the American Chemical Society Volume: 136 Pages: 14100
  • Peer Reviewed
• [Journal Article] Cellulose Nanofiber Paper as an Ultra Flexible Nonvolatile Memory (2014)
  • Author(s): Nagashima, K., H.Koga, U.Celano, F.Zhuge, M.Kanai, S.Rahong, G.Meng, Y.He, J.D.Boeck, M.Jurczak, W.Vandervorst, T.Kitaoka, M.Nogi and T.Yanagida
  • Journal Title: Scientific Reports(Nature Publishing Group) Volume: 4 Pages: 5532
  • Peer Reviewed
• [Journal Article] Ultrafast and Wide Range Analysis of DNA Molecules Using Rigid Network Structure of Solid Nanowires (2014)
  • Author(s): Rahong, S., T.Yasui, T.Yanagida, G.Meng, F.Zhuge, Y.He, N.Kaji, M.Kanai, K.Nagashima, T.Kawai, and Y.Baba
  • Journal Title: Scientific Reports(Nature Publishing Group) Volume: 4 Pages: 5252
  • Peer Reviewed
• [Journal Article] Flux Induced Crystal Phase Transition in Vapor-Liquid-Solid Growth of Indium-Tin Oxide Nanowires (2014)
  • Author(s): Meng, G., T.Yanagida, K.Nagashima, H.Yoshida, M.Kanai, A.Klamchuen, F.Zhuge, Y.He, S.Rahong, X.Fang, S.Takeda and T.Kawai
  • Journal Title: Nanoscale Volume: 6 Pages: 7033-7038
  • Peer Reviewed
• [Presentation] Oxide Nanowire Devices for Analyzing Biomolecules (2016)
  • Author(s): Takeshi Yanagida
  • Organizer: Pacifichem 2015
  • Place of Presentation: USA
  • Year and Date: 2016-01-15
  • 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ナノデバイス展開 (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「低次元形態セラミックスの機能と構造制御」
  • 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「酸化物機能性材料が牽引するエレクトロニクスの新展開 ～関西発、革新技術と若手研究者からの情報発信～」
  • 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
• [Presentation] Material Design of Metal Oxide Nanowires and Their Promises (2014)
  • Author(s): Takeshi Yanagida
  • Organizer: The 15th Ries-Hokudai International Symposium
  • Place of Presentation: Sapporo
  • Year and Date: 2014-12-16 – 2014-12-17
  • Int'l Joint Research / Invited
• [Presentation] Energy Harvesting via Thermoelectricity of Self Organized Nanowires (2014)
  • Author(s): Takeshi Yanagida
  • Organizer: The 1st Asia Joint Workshop on Functional Materials Science -Thermoelectrics, Spintronics, Low-dimensional Materials, and Soft matter-
  • Place of Presentation: Sapporo
  • Year and Date: 2014-08-01
  • Int'l Joint Research / Invited
• [Presentation] Energy Harvesting using Nano-materials (2014)
  • Author(s): Takeshi Yanagida
  • Organizer: Japan America Frontiers of Engineering
  • Place of Presentation: Tokyo
  • Year and Date: 2014-06-09 – 2014-06-11
  • Int'l Joint Research / Invited
• [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