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Influence of the interference effects on radiative transfer in dense colloidal suspensions

Research Project

Project/Area Number 20H02076
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 19020:Thermal engineering-related
Research InstitutionHokkaido University

Principal Investigator

Fujii Hiroyuki  北海道大学, 工学研究院, 助教 (00632580)

Co-Investigator(Kenkyū-buntansha) 西村 吾朗  北海道大学, 電子科学研究所, 助教 (30218193)
渡部 正夫  北海道大学, 工学研究院, 教授 (30274484)
小林 一道  北海道大学, 工学研究院, 准教授 (80453140)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Keywords生体内光伝播 / ふく射輸送理論 / 光学特性値 / 生体模擬溶液 / 干渉効果 / 電磁波散乱理論 / 近赤外分光法とイメージング / 輻射(ふくしゃ)の干渉効果 / 干渉散乱理論と輻射輸送論 / 輻射輸送の普遍性 / 分光法と光イメージング / ふく射の干渉効果 / 干渉散乱理論とふく射輸送理論 / 干渉効果とふく射輸送の普遍性 / 光イメージング,分光法,光治療 / ふく射場の干渉機構 / 干渉散乱理論とふく射輸送モデル / ふく射輸送の時空間スケールの普遍性 / 光イメージングと光治療
Outline of Research at the Start

生体光イメージング技術の開発が進められ,がん部位の非侵襲診断や非侵襲治療などに応用されている.この技術の発展のためには,生体内の光伝播を明らかにする必要がある.本研究では,生体を模擬した高密度なコロイド溶液に対して,光エネルギーとしてのふく射の輸送モデルの高度化,そして,極短パルスレーザー光源による光強度計測を実施する.ふく射の干渉効果が光伝播に及ぼす影響について理論,数値計算,実験より明らかにする.

Outline of Final Research Achievements

This study aimed to clarify the interference effect on the light-scattering properties (e.g., scattering coefficient) and radiative transfer characteristics (e.g., mean time of flight) in dense colloidal suspensions by developing the radiative transfer model combined with the dependent scattering theory. We showed the interference of the electric fields scattered by colloidal particles strongly influences the light scattering properties and radiative transfer characteristics. For further analysis, we developed model equations for the properties and characteristics. The developed model equations allow us to evaluate the two factors: the single-particle scattering factor and the interference factor. Dimensionless analysis based on the two factors showed the results are collapsed on a single curve. This result suggests there exists the universality of the interference effect, independently of the optical wavelength, particle size, and so on.

Academic Significance and Societal Importance of the Research Achievements

近赤外波長帯域の光による生体イメージングや治療において、生体内の光伝播を定量的に予測することが重要である。しかし、近赤外光は生体により強く散乱され、光伝播の予測を困難とする。基礎研究として、生体を模擬した溶液である高濃度なコロイド溶液の光散乱特性を調べることが重要である。高濃度なコロイド溶液では、散乱体間の距離が短く、散乱波は干渉し、光散乱特性に強く影響を及ぼす(干渉効果)。本研究では、干渉効果が光散乱特性だけではなく光伝播にも顕著にあらわれることを示した。さらに、干渉効果の普遍的な性質も見出した。本研究の成果は散乱光によるイメージングや治療の開発や社会応用において有用な知見である。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (34 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 4 results) Presentation (20 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results) Book (1 results) Remarks (4 results)

  • [Int'l Joint Research] ミシガン大学(米国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Modeling photoacoustic pressure generation in colloidal suspensions at different volume fractions based on a multi-scale approach2022

    • Author(s)
      Fujii Hiroyuki、Terabayashi Iori、Kobayashi Kazumichi、Watanabe Masao
    • Journal Title

      Photoacoustics

      Volume: 27 Pages: 100368-100368

    • DOI

      10.1016/j.pacs.2022.100368

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Model equations of light scattering properties and a characteristic time of light propagation for polydisperse colloidal suspensions at different volume fractions2022

    • Author(s)
      Fujii Hiroyuki、Ueno Moegi、Inoue Yuki、Aoki Toshiaki、Kobayashi Kazumichi、Watanabe Masao
    • Journal Title

      Optics Express

      Volume: 30 Issue: 3 Pages: 3538-3538

    • DOI

      10.1364/oe.447334

    • NAID

      120007186302

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Study of Near-Infrared Light Propagation in Aqueous Alumina Suspensions Using the Steady-State Radiative Transfer Equation and Dependent Scattering Theory2022

    • Author(s)
      Fujii Hiroyuki、Terabayashi Iori、Aoki Toshiaki、Inoue Yuki、Na Hyeonwoo、Kobayashi Kazumichi、Watanabe Masao
    • Journal Title

      Applied Sciences

      Volume: 12 Issue: 3 Pages: 1190-1190

    • DOI

      10.3390/app12031190

    • NAID

      120007186301

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Modelling of Initial Photoacoustic Pressure in Colloidal Suspensions for Photoacoustic Imaging2021

    • Author(s)
      Fujii Hiroyuki、Aoki Toshiaki、Inoue Yuki、Terabayashi Iori、Kobayashi Kazumichi、Watanabe Masao
    • Journal Title

      Technical digest of 26th Microoptics Conference (MOC2021)

      Volume: PO-11 Pages: 164-165

    • DOI

      10.23919/moc52031.2021.9598078

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Derivation of an extended radiative transfer equation from the electromagnetic wave equation2021

    • Author(s)
      Aoki Toshiaki、Fujii Hiroyuki、Inoue Yuki、Kobayashi Kazumichi、Watanabe Masao
    • Journal Title

      Extended abstract of NIR2021

      Volume: O11 Pages: 60-61

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Study on near-infrared light scattering in colloidal suspensions using time-resolved measurements2021

    • Author(s)
      Inoue Yuki、Fujii Hiroyuki、Nishimura Goro、Aoki Toshiaki、Kobayashi Kazumichi、Watanabe Masao
    • Journal Title

      Extended abstract of NIR2021

      Volume: P13 Pages: 168-169

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photon transport model for dense polydisperse colloidal suspensions using the radiative transfer equation combined with the dependent scattering theory2020

    • Author(s)
      Fujii Hiroyuki、Tsang Leung、Zhu Jiyue、Nomura Koki、Kobayashi Kazumichi、Watanabe Masao
    • Journal Title

      Optics Express

      Volume: 28 Issue: 15 Pages: 22962-22962

    • DOI

      10.1364/oe.398582

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A comparative study of the delta-Eddington and Galerkin quadrature methods for highly forward scattering of photons in random media2020

    • Author(s)
      H. Fujii, G. Chiba, Y. Yamada, Y. Hoshi, K. Kobayashi, M. Watanabe
    • Journal Title

      Journal of Computational Physics

      Volume: 423 Pages: 109825-109825

    • DOI

      10.1016/j.jcp.2020.109825

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 豆乳凝集過程モニタリングのための光散乱特性計測2023

    • Author(s)
      西川小彌太、藤井宏之、西村吾朗、小林一道、渡部正夫
    • Organizer
      日本機械学会北海道支部 第52回学生員卒業研究発表講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Near-infrared scattering properties for binary sticky hardsphere fluids2022

    • Author(s)
      Hiroyuki Fujii、Hyeonwoo Na、Toshiaki Aoki、Yuki Inoue、Iori Terabayashi、Kazumichi Kobayashi、Masao Watanabe
    • Organizer
      OPIC OPTICS & PHOTONICS International Congress 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高濃度溶液における光散乱を伴い発生する光音響波モデリング2022

    • Author(s)
      藤井宏之、小林一道、渡部正夫、西村吾朗
    • Organizer
      日本光学会年次学術講演会 Optics & Photonics Japan 2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 高濃度溶液における近赤外レーザーで誘起する光音響波モデリング2022

    • Author(s)
      藤井宏之、井上優輝、羅炫禹、小林一道、渡部正夫
    • Organizer
      第38回近赤外フォーラム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Wavelength dependent interference effects on the light scattering in fat emulsions using time dependent diffuse reflectance measurements2022

    • Author(s)
      Inoue Yuki、Fujii Hiroyuki、Nishimura Goro、Aoki Toshiaki、Kobayashi Kazumichi、Watanabe Masao
    • Organizer
      The 8th Asian NIR Symposium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コロイド粒子の粘着性が及ぼす近赤外光散乱特性への影響に関する数値解析2022

    • Author(s)
      藤井宏之、羅炫禹、青木俊晃、井上優輝、寺林伊織、小林一道、渡部正夫
    • Organizer
      第59回 伝熱シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 時間分解計測を用いた脂肪乳剤における光散乱の干渉効果の波長依存性に関する調査2022

    • Author(s)
      井上優輝、藤井宏之、西村吾朗、小林一道、渡部正夫
    • Organizer
      第38回近赤外フォーラム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 時間分解計測によるコロイド溶液の換算散乱係数の波長依存性とその干渉効果の解析(2)2022

    • Author(s)
      井上優輝、藤井宏之、西村吾朗、小林一道、渡部正夫
    • Organizer
      日本光学会年次学術講演会 Optics & Photonics Japan 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Numerical modelling of initial photoacoustic pressure in colloidal suspensions for photoacoustic imaging2021

    • Author(s)
      Hiroyuki Fujii, Toshiaki Aoki, Yuki Inoue, Iori Terabayashi, Kazumichi Kobayashi, Masao Watanabe
    • Organizer
      26th Microoptics Conference (MOC2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Derivation of an extended radiative transfer equation from the electromagnetic wave equation2021

    • Author(s)
      Toshiaki Aoki, Hiroyuki Fujii, Yuki Inoue, Kazumichi Kobayashi, Masao Watanabe
    • Organizer
      NIR2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study on near-infrared light scattering in colloidal suspensions using time-resolved measurements (Best poster award)2021

    • Author(s)
      Yuki Inoue, Hiroyuki Fujii, Goro Nishimura, Toshiaki Aoki, Kazumichi Kobayashi, Masao Watanabe
    • Organizer
      NIR2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コロイド溶液中の光干渉効果が及ぼすふく射輸送への影響に関する数値解析2021

    • Author(s)
      藤井宏之,上野萌黄,青木俊晃,井上優輝,小林一道,渡部正夫
    • Organizer
      第58回日本伝熱シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 時間分解計測によるコロイド溶液の換算散乱係数の波長依存性とその干渉効果の解析2021

    • Author(s)
      井上優輝,藤井宏之,西村吾朗,青木俊晃,小林一道,渡部正夫
    • Organizer
      日本光学会年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 近赤外レーザーで誘起される光音響波のマルチフィジックスモデル(Student Travel Award)2021

    • Author(s)
      寺林伊織, 藤井宏之, 小林一道, 渡部正夫
    • Organizer
      第37回近赤外フォーラム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 分子動力学法によるLJ 流体の光散乱解析2021

    • Author(s)
      羅炫禹, 藤井宏之, 寺林伊織, 小林一道, 渡部正夫
    • Organizer
      日本機械学会北海道学生会 第51回 学生員卒業研究発表講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 時間分解計測を用いた近赤外波長帯域におけるコロイド溶液の光散乱に関する調査2021

    • Author(s)
      井上優輝,藤井宏之,西村吾朗,小林一道,渡部正夫
    • Organizer
      日本機械学会北海道学生会 第50回学生員卒業研究発表講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 生体・農産物・食品における光散乱のモデリングと解析(NIR Advance Award受賞講演)2020

    • Author(s)
      藤井宏之
    • Organizer
      第36回近赤外フォーラム
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 多分散コロイド溶液における散乱波の干渉効果に関する数値解析2020

    • Author(s)
      藤井宏之,野村航希,小林一道,渡部正夫
    • Organizer
      第57回日本伝熱シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 輻射輸送における干渉効果に関する数値解析2020

    • Author(s)
      上野萌黄,藤井宏之,小林一道,渡部正夫
    • Organizer
      日本機械学会熱工学コンファレンス 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 電磁波の波動方程式から輻射輸送方程式の理論的導出2020

    • Author(s)
      青木俊晃,藤井宏之,小林一道,渡部正夫
    • Organizer
      日本機械学会熱工学コンファレンス 2020
    • Related Report
      2020 Annual Research Report
  • [Book] 生体ひかりイメージング 基礎と応用、1章3節、2章5節2021

    • Author(s)
      藤井 宏之
    • Total Pages
      628
    • Publisher
      エヌ・ティー・エス
    • ISBN
      9784860437299
    • Related Report
      2021 Annual Research Report
  • [Remarks] Research map

    • URL

      https://researchmap.jp/fujii-hr/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] 所属研究室web page

    • URL

      https://tfp.eng.hokudai.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] Google scholar

    • URL

      https://scholar.google.com/citations?user=cIsrZd8AAAAJ&hl=ja&oi=sra

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] 個人web page

    • URL

      https://fujii-hr.eng.hokudai.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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