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Visualization measurement for elucidation of evaporation enhancement mechanism on the surface of moth-eye structure matched by a refractive index

Research Project

Project/Area Number 19K04224
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 19020:Thermal engineering-related
Research InstitutionTokyo University of Science

Principal Investigator

Satake Shin-ichi  東京理科大学, 先進工学部電子システム工学科, 教授 (90286667)

Co-Investigator(Kenkyū-buntansha) 谷口 淳  東京理科大学, 先進工学部電子システム工学科, 教授 (40318225)
安藤 格士  東京理科大学, 先進工学部電子システム工学科, 准教授 (30385546)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords屈折率調整法 / ナノインプリント法 / 全反射蛍光顕微鏡 / UV硬化樹脂 / 分子動力学法 / ナノステップ構造 / モスアイ構造 / デジタルホログラフィックPTV / ブラウン動力学 / インデックスマッチング法 / ブラウン動力学法 / 全反射顕微鏡
Outline of Research at the Start

本研究グループは,伝熱実験に必要な様々な種類のナノ表面を作製でき,評価結果を受けて,ブラウン動力学シミュレーションで最適と考えられる構造を作って,評価していく。また,最終的にはデバイスを作製するために,大面積化と量産手法の確立は必要となるため,本グループは,作製から実用化までを担うことができる。また,数値シミュレーションによって示唆される最適な微細構造によって生じる界面近傍のサブマイクロメートルの熱流動変化をTIRFM可視化実験で評価する。

Outline of Final Research Achievements

We carried out 3-D visualization of total internal reflection fluorescence microscopy (TIRFM) to understand the three-dimensional motion of a nanoparticle on a nanosized step structure by using a refractive index-matching method with a water used as a working fluid, the step was made of an ultraviolet (UV)-curable resin, whose refractive index is the same as that of a water. Diffusion coefficient obtained by the motion of a fluorescent nanoparticle in the vicinity of the nanostep in water could be clearly captured without optical distortion. The measured diffusion coefficient along the edge of the step was larger than that across the step. Molecular dynamics simulations were also conducted to calculate the diffusion coefficients near nanosized step. The simulation results were qualitatively similar to the experimental observations.

Academic Significance and Societal Importance of the Research Achievements

本研究で用いる表面作製手法ではテーパー状の高アスペクト比の針状構造を容易に得ることができ,独創性が高く優位な技術であり,実在の蒸発を制御するために最適な伝熱デバイスの設計を見込むことができる。さらに計測手法も水中に限定しているため,生物医学系の計測が水を媒体する中で行われることに対して親和性が高い。UV硬化型樹脂を使用したナノインプリントリソグラフィ―を使うことで大面積・大量生産に向いていることから,シート状に印刷をするように作製が可能であり,低価格で大量生産できる可能性がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (3 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Molecular Dynamics Simulation of the Resist Filling Process in UV-nanoimprint Lithography2021

    • Author(s)
      Uchida Hiroki、Imoto Ryosuke、Ando Tadashi、Okabe Takao、Taniguchi Jun
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 34 Issue: 2 Pages: 139-144

    • DOI

      10.2494/photopolymer.34.139

    • NAID

      130008119658

    • ISSN
      0914-9244, 1349-6336
    • Year and Date
      2021-06-11
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of Water Treatment Reactor using TiO<sub>2</sub>-coated Micropillar Made by UV-NIL2021

    • Author(s)
      Daigo Kazuki、Akama Ryota、Unno Noriyuki、Satake Shin-ichi、Taniguchi Jun
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 34 Issue: 2 Pages: 127-132

    • DOI

      10.2494/photopolymer.34.127

    • NAID

      130008119667

    • ISSN
      0914-9244, 1349-6336
    • Year and Date
      2021-06-11
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 屈折率整合法を用いた微細構造体周りの流れ場の3次元可視化技術及び光触媒リアクターへの新展開2020

    • Author(s)
      海野徳幸、佐竹信一
    • Journal Title

      伝熱

      Volume: 59 Pages: 52-58

    • Related Report
      2020 Research-status Report
  • [Journal Article] Transfer durability of high aspect ratio moth-eye structure on glassy carbon mold using release agent2020

    • Author(s)
      Kawauchi Junya、Taniguchi Jun
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SI Pages: SIIJ12-SIIJ12

    • DOI

      10.35848/1347-4065/ab7b17

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Anti-fouling and optical characterization of micro-lens array with antireflection structure by UV-NIL2020

    • Author(s)
      Nakamura Masato、Kurihara Kazuma、Hokari Ryohei、Hiwasa Shin、Taniguchi Jun
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SI Pages: SIIJ06-SIIJ06

    • DOI

      10.35848/1347-4065/ab79ee

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Three-dimensional flow measurements around micro-pillars made by UV-NIL in water via micro-digital holographic particle tracking velocimetry (Micro-DHPTV)2020

    • Author(s)
      Yasuhiro Matsuda, Hiroshi Kigami, Noriyuki Unno, Shin-ichi Satake, and Jun Taniguchi
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 33 Pages: 557-562

    • NAID

      130007867669

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 3D simulation and experiment of the fluid flow around structure with nano step made by UV-NIL2022

    • Author(s)
      Tadashi Ando, Yusei Honda, Tomoki Yanagawa, Noriyuki Unno, Jun Taniguchi, and Shin-ichi Satake
    • Organizer
      The 39th International Conference of Photopolymer Science and Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Molecular Dynamics Study of Resist Filling Process in UV-nanoimprint Lithography2021

    • Author(s)
      Hiroki Uchida, Ryosuke Imoto, Takao Okabe, Jun Taniguchi, Tadashi Ando
    • Organizer
      The 38th International Conference of Photopolymer Science and Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Three-dimensional flow measurements around micro-pillars in water by micro-digital holographic particle tracking velocimetry2019

    • Author(s)
      Yasuhiro Matsuda, Hiroshi Kigami, Noriyuki Unno, Jun Taniguchi and Shin-ichi Satake
    • Organizer
      The 13th Japan-Finland Joint Symposium on Optics in Engineering (OIE 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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