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Optical force spectroscopy

Research Project

Project/Area Number 22K18978
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 30:Applied physics and engineering and related fields
Research InstitutionHokkaido University

Principal Investigator

Sasaki Keiji  北海道大学, 電子科学研究所, 学術研究員 (00183822)

Co-Investigator(Kenkyū-buntansha) Pin Christophe  北海道大学, 電子科学研究所, 特任助教 (50793767)
Project Period (FY) 2022-06-30 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2022: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywords光圧 / 単一ナノ粒子 / 超高感度吸収分光 / 運動量
Outline of Research at the Start

光のエネルギーを観測する既存の分光法とは概念が異なり、共鳴吸収による光の運動量変化により発生する力(光圧)を利用した新しい原理に基づく単一ナノ粒子の超高感度スペクトロスコピーを創製する。本手法は、ナノ粒子の電子のミクロな運動(波動関数)が光圧を介して粒子のマクロな運動として現れることに着目し、粒子の運動計測から共鳴吸収の定量解析を実現するものであり、吸収過程の直接観測法であると同時に零位法であるため単一分子レベルの超高感度化が可能である。光圧ナノスペクトロスコピーは、光科学技術にパラダイムシフトをもたらすとともに、ナノ物質科学・材料創製研究においてブレークスルーとなりうる新展開が期待できる。

Outline of Final Research Achievements

We proposed an ultra-sensitive absorption spectroscopy technique for single nanoparticles based on a novel principle that utilizes the optical force generated by the change in photon momentum in resonant absorption, which is completely different in concept from conventional spectroscopy techniques observing light energy. This technique is based on the fact that the microscopic motion (wavefunction) of electron within a nanoparticle appears as the macroscopic motion of the nanoparticle through the optical force caused by resonant absorption, which can realize quantitative analysis of the optical excitation process from the measurement of particle motion. Optical force nano-spectroscopy, based on our unique idea, is the method for directly observing the resonant absorption process, and as it is a background-free null-method, which makes it possible to achieve ultra-high sensitivity.

Academic Significance and Societal Importance of the Research Achievements

量子ドット、金属クラスター、ナノダイヤモンド等のナノ粒子は、量子サイズ効果など特異な量子力学的特性を持つため活発に研究されているが、粒子毎に異なる特性を現すので、個々の粒子の分光学的計測技術の開発が重要な課題であった。本研究では、従来の分光法の測定対象である光のエネルギーに替わって、光が持つもう一つの物理量「運動量」を活用する独自のアイデアに基づいた単一ナノ粒子共鳴吸収分光法を世界に先駆けて開発した。本手法は、超高感度化と共鳴吸収過程の直接観測を同時に実現することができ、高機能材料・単一量子センサー・量子通信処理の研究開発にパラダイムシフトをもたらす可能性を秘めている。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (21 results)

All 2025 2024 2023 2022 Other

All Int'l Joint Research (2 results) Journal Article (12 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 12 results,  Open Access: 7 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 6 results) Remarks (1 results)

  • [Int'l Joint Research] 国立陽明交通大学(台湾)

    • Related Report
      2023 Research-status Report
  • [Int'l Joint Research] Sultan Idris Education University(マレーシア)

    • Related Report
      2023 Research-status Report
  • [Journal Article] Nanoscale chirality enhancement using topology-designed three-dimensional dielectric nanogap antennas2025

    • Author(s)
      Taguchi Atsushi、Fukui Yamato、Sasaki Keiji
    • Journal Title

      Physical Review Applied

      Volume: 23 Issue: 2

    • DOI

      10.1103/physrevapplied.23.l021002

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enantioselectivity switch in chiral crystallization using optical trapping with gold nanoparticles2024

    • Author(s)
      Su Hao-Tse、Niinomi Hiromasa、Cheng An-Chieh、Tanaka Yoshito Y.、Sasaki Keiji、Sugiyama Teruki
    • Journal Title

      Cell Reports Physical Science

      Volume: 5 Issue: 12 Pages: 102310-102310

    • DOI

      10.1016/j.xcrp.2024.102310

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nanoscale Helical Optical Force for Determining Crystal Chirality2024

    • Author(s)
      Cheng An‐Chieh、Pin Christophe、Sunaba Yuji、Sugiyama Teruki、Sasaki Keiji
    • Journal Title

      Small

      Volume: - Issue: 34 Pages: 2312174-2312174

    • DOI

      10.1002/smll.202312174

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Enantioselective control in chiral crystallization of ethylenediamine sulfate using optical trapping with circularly polarized laser beams2024

    • Author(s)
      Sugiyama Teruki、Lin Tung-Ming、Su Hao-Tse、Cheng An-Chieh、Sasaki Keiji
    • Journal Title

      The Journal of Chemical Physics

      Volume: 160 Issue: 6 Pages: 064502-064502

    • DOI

      10.1063/5.0186018

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Scheme to Enhance Hot Carrier Generation Owing to the Localized Mode of Hybridized Plasmon in Gold Nanoparticle Arrays2024

    • Author(s)
      Inoue Soshun、Yokoyama Tomohiro、Sasaki Keiji、Misawa Hiroaki、Ishihara Hajime
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 128 Issue: 7 Pages: 2796-2802

    • DOI

      10.1021/acs.jpcc.3c08435

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enantioselectivity in Chiral Crystallization Driven by the Canonical and Spin Momentum Forces of Optical Vortex Beams2024

    • Author(s)
      Cheng An-Chieh、Pin Christophe、Sugiyama Teruki、Sasaki Keiji
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 128 Issue: 10 Pages: 4314-4320

    • DOI

      10.1021/acs.jpcc.3c08424

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] OPTICAL TRAPPING OF A SINGLE CHLOROFORM MICRODROPLET IN WATER2023

    • Author(s)
      Mat Yeng Muhamad Safuan、Ayop Shahrul Kadri、Sasaki Keiji
    • Journal Title

      Jurnal Teknologi

      Volume: 85 Issue: 3 Pages: 117-123

    • DOI

      10.11113/jurnalteknologi.v85.19303

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nano-shaping of chiral photons2023

    • Author(s)
      Sunaba Yuji、Ide Masaki、Takei Ryo、Sakai Kyosuke、Pin Christophe、Sasaki Keiji
    • Journal Title

      Nanophotonics

      Volume: 12 Issue: 13 Pages: 2499-2506

    • DOI

      10.1515/nanoph-2022-0779

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantum-Coherence-Enhanced Hot-Electron Injection under Modal Strong Coupling2023

    • Author(s)
      Liu Yen-En、Shi Xu、Yokoyama Tomohiro、Inoue Soshun、Sunaba Yuji、Oshikiri Tomoya、Sun Quan、Tamura Mamoru、Ishihara Hajime、Sasaki Keiji、Misawa Hiroaki
    • Journal Title

      ACS Nano

      Volume: 17 Issue: 9 Pages: 8315-8323

    • DOI

      10.1021/acsnano.2c12670

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Plasmonic manipulation in chiral crystallization of sodium chlorate2023

    • Author(s)
      Cheng An-Chieh、Sugiyama Teruki、Sasaki Keiji
    • Journal Title

      Proc. SPIE

      Volume: PC12649 Pages: 67-67

    • DOI

      10.1117/12.2680961

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Controlled optical manipulation and sorting of nanomaterials enabled by photonic and plasmonic nanodevices2022

    • Author(s)
      Pin Christophe、Fujiwara Hideki、Sasaki Keiji
    • Journal Title

      Journal of Photochemistry and Photobiology C: Photochemistry Reviews

      Volume: 52 Pages: 100534-100534

    • DOI

      10.1016/j.jphotochemrev.2022.100534

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optical Manipulation of a Liquid Crystal (LC) Microdroplet by Optical Force2022

    • Author(s)
      Yeng Muhamad Safuan Mat、Ayop Shahrul Kadri、Sasaki Keiji
    • Journal Title

      Crystal Research and Technology

      Volume: 57 Issue: 10 Pages: 2200080-2200080

    • DOI

      10.1002/crat.202200080

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ナノ局在トポロジカル光場による物質制御・操作2024

    • Author(s)
      笹木敬司
    • Organizer
      2023年度日本分光学会北海道支部シンポジウム
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] 光の形をナノスケールで自在に操る2023

    • Author(s)
      笹木敬司
    • Organizer
      第25回プラズモニック化学シンポジウム
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] プラズモニックナノ局在渦場の物理特性2023

    • Author(s)
      笹木敬司
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] Analysis of Optically and Plasmonically Driven Nanoscale Motion of Nanoparticles2023

    • Author(s)
      Keiji SASAKI
    • Organizer
      SPIE Optics + Photonics Optical Trapping and Optical Micromanipulation XX
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 光とナノ構造のスピン軌道相互作用制御とその応用2022

    • Author(s)
      笹木敬司
    • Organizer
      第164回微小光学研究会「光の構造化は何をもたらすか」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] ナノ物質を自在に操る光のピンセット2022

    • Author(s)
      笹木敬司
    • Organizer
      日本物理学会大阪支部2022年度公開シンポジウム 光圧で拓く!光圧を制す!ーミクロから宇宙までー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Remarks] http://optsys.es.hokudai.ac.jp/jp/index.html

    • Related Report
      2023 Research-status Report

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Published: 2022-07-05   Modified: 2026-01-16  

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