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Controlling flow fields on a nanometric scale via plasmonic heating of gold nanoparticles

Research Project

Project/Area Number 18K13688
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionHokkaido University

Principal Investigator

Setoura Kenji  北海道大学, 電子科学研究所, 助教 (90804089)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords局在プラズモン / 金ナノ粒子 / 熱プラズモニクス / 光熱変換 / 熱対流 / 熱泳動 / 光ピンセット / オプトフルイディクス / レーザー加熱 / マイクロ流体デバイス
Outline of Final Research Achievements

The present study aims to control flow fields on a nanometric scale by creating temperature, pressure, and surface tension gradients via optical heating of gold nanoparticles. The experimental and numerical results demonstrated that the flow field on a sub-micron scale can be controlled with Marangoni convection driven by the surface tension gradient on a nanobubble around the heated gold nanoparticle. Besides, it has been found that thermophoresis, temperature-gradient-induced migration of tiny objects, is one of the most efficient methods for transporting and sorting metal nanoparticles in solution.

Academic Significance and Societal Importance of the Research Achievements

本研究では、レーザー加熱に誘起される「マランゴニ対流」と「熱泳動」が、微小領域の流れ場の制御および物質輸送に有効であることを、実験および数値計算の両面から明らかにした。得られた成果の一部は、その学術的な新規性と重要性が評価され、英国王立化学会が出版している"Nanoscale"誌に掲載され、さらにジャーナルのカバーピクチャーにも選ばれた。
これらの成果は将来的に、ナノ・マイクロサイズの微小流体デバイス中で、分子・タンパク質・細胞などを輸送したり、選別・分析などを行う際に、それらの効率や感度の向上に役立つと期待される。

Report

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

    (5 results)

All 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (2 results)

  • [Journal Article] Opto-Thermophoretic Separation and Trapping of Plasmonic Nanoparticles2019

    • Author(s)
      Kenji Setoura, Tetsuro Tsuji, Syoji Ito, Satoyuki Kawano, Hiroshi Miyasaka
    • Journal Title

      Nanoscale

      Volume: 11 Issue: 44 Pages: 21093-21102

    • DOI

      10.1039/c9nr05052c

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature Elevation and Fluid Convection Under Optical Trapping Condition as Revealed by Fluorescence Correlation Spectroscopy2018

    • Author(s)
      Kenji Setoura; Keisuke Fujita; Syoji Ito*; Hiroshi Miyasaka*
    • Journal Title

      Journal of Nanophotonics

      Volume: 13 Issue: 01 Pages: 12504-12504

    • DOI

      10.1117/1.jnp.13.012504

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Single-particle photoluminescence from cadmium selenide quantum dots fabricated via laser ablation in superfluid helium2018

    • Author(s)
      Yosuke Minowa*; Tatsuro Suzuki; Kenji Setoura; Syoji Ito; Hiroshi Miyasaka; Masaaki Ashida
    • Journal Title

      Journal of Nanophotonics

      Volume: 13 Issue: 01 Pages: 12506-12506

    • DOI

      10.1117/1.jnp.13.012506

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Thermophoresis-assisted optical trapping of single gold nanoshells2019

    • Author(s)
      SETOURA, Kenji; TSUJI, Tetsuro; ITO, Syoji; KAWANO, Satoyuki; MIYASAKA, Hiroshi
    • Organizer
      2019年光化学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 光圧と熱泳動によるプラズモニックナノ粒子のマニピュレーション2019

    • Author(s)
      瀬戸浦 健仁, 辻 徹郎, 伊都 将司, 川野 聡恭, 宮坂 博
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-02-19  

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