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Time-resolved vector potential spectroscopy on energy transfer inside macro and supermolecules

Research Project

Project/Area Number 18K05047
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 32010:Fundamental physical chemistry-related
Research InstitutionKanazawa Institute of Technology

Principal Investigator

Ashino Makoto  金沢工業大学, 工学部, 准教授 (70247435)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2021: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2020: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsグラフェン / ナノフレーク / 原子間力顕微鏡 / ケルビンプローブ法 / 機械的劈開法 / 表面電位分布 / 仕事関数 / 大気中へき開 / P形ドープ / N形ドープ / P-N接合 / Configurational Energy / Bending Modulus / Gaussian Modulus / Adhesive Energy / Force Field Spectroscopy / Atomic Force Microscopy / グラフェンナノリボン / ブリッジ構造 / 曲げ抵抗(Bending Rigidity) / ガウス率(Gaussian Modulus) / 3次元力場分光法 / 熱エネルギー / 熱的ゆらぎ / 変換効率 / 原子振動 / 引力相互作用 / 電気エネルギー / 表面ポテンシャル / 原子移動 / 鉛直(縦)振動 / SWNT / フリースタンディング / 減衰力分光法 / 3次元力場分光 / 時間分解分光 / エネルギー変換
Outline of Final Research Achievements

In this study, we focused on graphene, a one-atom-thick sheet of carbon that is the raw material for carbon nanotubes, by combining atomic force microscopy with the Kelvin probe method. We succeeded in observing simultaneously the surface structures and surface potentials of a graphene nanoflake with a side size of less than 1 micrometer at a high resolution, which has never been reported before. By precisely determining the work function of the tip used for the measurement, the work function of the single-layer graphene nanoflake and very small stacking layers on top of it have been successfully derived. It was found that the nanoflake graphene contains n-type regions as well as p-type regions, which have been reported previously.

Academic Significance and Societal Importance of the Research Achievements

グラフェンを光・電子デバイスへ応用する試みが、半導体産業を中心に近年活発に行われるようになって来ている。2000年代初頭に粘着テープを用いた劈開法によるグラフェンの生成に成功した当時から、グラフェンはp型ドープされることが知られていた。グラフェンをn型にドープする方法が国内外をこれまで問わず活発に行われてきたが、どれも大規模で複雑な装置を必要としていた。本研究では、ナノフレーク状の単原子層グラフェンが自然発生的にn型にドープされることを世界で初めて発見した。この発見を通じ、今後、製造過程の大幅な簡素化が図られることが予想され、グラフェンの光・電子デバイスへの応用が一層活発化されると期待される。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (14 results)

All 2023 2022 2021 2019 2018 Other

All Int'l Joint Research (4 results) Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] ハンブルク大学(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Department of Physics/University of Hamburg(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ハンブルク大学/物理学科/応用物理学研究所(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Hamburg/Department of Physics/Institute of Applied Physics(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Precise measurement of the configurational energy of bent graphene membranes via three-dimensional force field spectroscopy2021

    • Author(s)
      1.Makoto Ashino, Keita Nishioka, Keiji Hayashi, and Roland Wiesendanger
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 8 Pages: 085407-085407

    • DOI

      10.1103/physrevb.104.085407

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anomalous Flexural Elasticities of Graphene Membranes Unveiled by Manipulating Topology2021

    • Author(s)
      Makoto Ashino, Keita Nishioka, Keiji Hayashi, Roland Wiesendanger
    • Journal Title

      PHYSICAL REVIEW LETTERS

      Volume: 126 Issue: 14 Pages: 146101-146101

    • DOI

      10.1103/physrevlett.126.146101

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Atomic-Site-Specific Analysis on Out-of-Plane Elasticity of Convexly Curved Graphene and Its Relationship to sp2 to sp3 Re-Hybridization2018

    • Author(s)
      Makoto Ashino and Roland Wiesendanger
    • Journal Title

      Crystals

      Volume: 8 Issue: 2 Pages: 102-102

    • DOI

      10.3390/cryst8020102

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ナノ・フレーク状グラフェンの表面電位分布評価(その1)2023

    • Author(s)
      嶋村隼太、石橋和真、西岡圭太、芦野 慎
    • Organizer
      2023年 応用物理学会 春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ナノ・フレーク状グラフェンの表面電位分布評価(その2)2023

    • Author(s)
      石橋和真、嶋村隼太、西岡圭太、芦野 慎
    • Organizer
      2023年 応用物理学会 春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ナノ・ フレーク状グラフェンのケルビンプローブ力顕微鏡観察(その1)2022

    • Author(s)
      嶋村隼太、石橋和真、西岡圭太、芦野 慎
    • Organizer
      2022年 応用物理学会 北陸・信越支部 学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ナノ・ フレーク状グラフェンのケルビンプローブ力顕微鏡観察(その2)2022

    • Author(s)
      石橋和真、嶋村隼太、西岡圭太、芦野 慎
    • Organizer
      2022年 応用物理学会 北陸・信越支部 学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Exploring out-of-plane Mechanics of Graphene Membrane by 3D Force Field Spectroscopy on various Nanotubes2019

    • Author(s)
      Makoto Ashino
    • Organizer
      APS March 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Exploring close correlations between chemical and mechanical properties of curved Graphene by 3D Force Field Spectroscopy2019

    • Author(s)
      Makoto Ashino and Roland Wiesendanger
    • Organizer
      26th Assembly Advanced Materials Congress
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Exploring out-of-plane Mechanics of Graphene Membrane by 3D Force Field Spectroscopy on various Nanotubes2018

    • Author(s)
      Makoto Ashino
    • Organizer
      American Physical Society
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2024-01-30  

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