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Functional devices of graphene using isotope engineering

Research Project

Project/Area Number 17K19037
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Nano/Micro science and related fields
Research InstitutionOsaka Prefecture University

Principal Investigator

Arie Takayuki  大阪府立大学, 工学(系)研究科(研究院), 准教授 (80533017)

Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2017: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsグラフェン / 熱電変換 / フォノン / 非対角熱電効果 / 同位体
Outline of Final Research Achievements

Graphene is one of the potential candidates for next-generation electronic devices due to its high electrical mobility, mechanical strength, and flexibility. Here, we introduced carbon isotope atoms, 13C, into graphene networks during growth using chemical vapor deposition to investigate their functions of devices with isotope interfaces. Introducing isotope interfaces into graphene may modify the electrical and thermal transport properties, resulting in the anisotropic electrical and thermal conductivities in the devices. We confirmed the transverse thermoelectric voltage caused by the anisotropicity of the graphene devices. The thermovoltage is proportional to the tilt angle of the interfaces and device aspect ratio, indicating that the induced voltage originates from transverse thermoelectric effect of the device.

Academic Significance and Societal Importance of the Research Achievements

従来廃棄されてきた熱エネルギーを再利用できるという観点から、熱を電気に変換する熱電変換は現在非常に重要な技術の一つに位置づけられている。熱電変換の効率を向上させるためには、電気伝導能の向上ならびに熱伝導能の低下が必要不可欠であるが、両方を同時に満たす材料開発は現在のところ困難とされている。本研究で提案した同位体界面による電気・熱特性の異方性に起因した非対角熱電効果は、特性そのものの向上による熱電変換の高効率化のみならず、デバイスサイズの変更によっても変換効率の向上が可能であり、今後のデバイス設計指針を提供可能であるという点で、非常に意義深いと考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (17 results)

All 2019 2018 2017 Other

All Int'l Joint Research (1 results) Presentation (16 results) (of which Int'l Joint Research: 8 results,  Invited: 4 results)

  • [Int'l Joint Research] HKUST(中国)

    • Related Report
      2018 Research-status Report
  • [Presentation] 二次元原子層のフォノンダイナミクス制御2019

    • Author(s)
      有江隆之
    • Organizer
      フォノンエンジニアリング研究グループ第3回研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] グラフェン膜に印加された歪みの解析2019

    • Author(s)
      中川魁斗、佐藤和朗、村上修一、竹井邦晴、秋田成司、有江隆之
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 同位体界面を用いたグラフェン中のフォノン伝導制御2019

    • Author(s)
      畑芳斗、野谷曜司、飛田聡、竹井邦晴、秋田成司、石橋幸治、有江隆之
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Controlling the thermal transport of mechanically exfoliated graphene by strain2019

    • Author(s)
      K. Nakagawa, K. Satoh, S. Murakami, K. Takei, S. Akita, T. Arie
    • Organizer
      The 21st International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON21)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Strain dependent thermal transport in graphene2019

    • Author(s)
      K. Nakagawa, K. Satoh, S. Murakami, K. Takei, S. Akita, T. Arie
    • Organizer
      Recent Progress in Graphene & 2D Materials Research (RPGR2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Strain analysis in graphene bulges for phonon engineering2019

    • Author(s)
      K. Nakagawa, K. Satoh, S. Murakami, K. Takei, S. Akita, T. Arie
    • Organizer
      International Symposium on Hybrid Quantum Systems 2019 (HQS2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quasi-ballistic phonon trasnport in graphene isotopic heteristructures2019

    • Author(s)
      Y. Notani, A. Hida, K. Takei, S. Akita, K. Ishibashi, T. Arie
    • Organizer
      International Symposium on Hybrid Quantum Systems 2019 (HQS2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Transverse thermoelectric voltage in isotopic graphene2018

    • Author(s)
      Y. Mochizuki, K. Takei, S. Akita, T. Arie
    • Organizer
      19th International Conference on the Science and Application of Nanotubes and Low-dimensional Materials (NT18)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Thermal transport of 12C/13C graphene phononic crystals2018

    • Author(s)
      Y. Notani, K. Takei, S. Akita, T. Arie
    • Organizer
      19th International Conference on the Science and Application of Nanotubes and Low-dimensional Materials (NT18)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Transverse thermoelectric effect of graphene isotopic heterostructures2018

    • Author(s)
      Y. Mochizuki, K. Takei, S. Akita, T. Arie
    • Organizer
      2018 International Conference on Solid State Devices and Materials (SSDM 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 12C/13C graphene superlattice for phonon modulation2018

    • Author(s)
      Y. Notani, K. Takei, S. Akita, T. Arie
    • Organizer
      14th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-14)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 熱マネージメントに向けたグラフェンのフォノンエンジニアリング2018

    • Author(s)
      有江隆之
    • Organizer
      フラーレン・ナノチューブ・グラフェン学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Transverse thermoelectric voltage in 12C/13C-graphene heterostructures2018

    • Author(s)
      望月裕太、竹井邦晴、秋田成司、有江隆之
    • Organizer
      フラーレン・ナノチューブ・グラフェン学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 12C/13Cグラフェンヘテロ構造における非対角熱電効果2018

    • Author(s)
      望月裕太、竹井邦晴、秋田成司、有江隆之
    • Organizer
      応用物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] グラフェンのフォノンエンジニアリングと環境発電への展開2017

    • Author(s)
      有江隆之
    • Organizer
      応用物理学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] グラフェンのフォノンエンジニアリングによる熱輸送制御の可能性2017

    • Author(s)
      有江隆之
    • Organizer
      「非線形エネルギー輸送による新しい物性理論の探求」第7回研究会
    • Related Report
      2017 Research-status Report
    • Invited

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Published: 2017-07-21   Modified: 2021-02-19  

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