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Self-organization of hydrophobin membranes formation at flattened-top domical water drops: a structural and mechanistic study using Atomic Force Microscope

Research Project

Project/Area Number 26600005
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Nanostructural chemistry
Research InstitutionKyushu Institute of Technology

Principal Investigator

Haruyama Tetsuya  九州工業大学, 大学院生命体工学研究科, 教授 (30251656)

Co-Investigator(Kenkyū-buntansha) FUKUMA Takeshi  金沢大学, 電子情報学系, 教授 (90452094)
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsHFB / 自己組織化膜 / AFM / 電気化学 / 界面機能
Outline of Final Research Achievements

HFBI is a species of hydrophobin protein that forms precise and structured self-organized membranes at air/water interfaces. When HFBI is dissolved in water droplets on a solid substrate, the top face of the water droplet becomes flattened through development of a self-organized HFBI membrane, as shown in the images below. This is a unique interface phenomenon. Self-organized HFBI membranes appear to be very strong. To determine the buckling strength of HFBI self-organized membrane, we analyzed them using AFM. The buckling strength of HFBI membranes is about twice as strong as the surface tension of HFBI containing water. This mechanistic study explains why water droplets containing HFBI have flattened tops.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (9 results)

All 2016 2015 2014

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Acknowledgement Compliant: 4 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Formation Mechanism of Flattened Top HFBI Domical Droplets2016

    • Author(s)
      Ryota Yamasaki and Tetsuya Haruyama,
    • Journal Title

      Journal of Physical Chemistry

      Volume: ACCEPTED

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Flattened-top domical water drops formed through self-organization of hydrophobin membranes: a structural and mechanistic study using AFM2016

    • Author(s)
      Ryota Yamasaki, Yoshiyuki Takatsuji, Hitoshi Asakawa, Takeshi Fukuma, and Tetsuya Haruyama
    • Journal Title

      ACS nano

      Volume: 10 (1) Issue: 1 Pages: 81-87

    • DOI

      10.1021/acsnano.5b04049

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Structural and electrochemical properties of self-organized HFBI membranes on different types of substrates2015

    • Author(s)
      Ryota Yamasaki, Hitoshi Asakawa, Takeshi Fukuma, and Tetsuya Haruyama
    • Journal Title

      Electrochemistry

      Volume: 83 Pages: 721-724

    • NAID

      130005107651

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Electrochemical Properties of Honeycomb-like Structured HFBI Self-Organized Membranes on HOPG Electrodes2014

    • Author(s)
      3.Ryota Yamasaki, Yoshiyuki Takatsuji, Michael Lienemann, Hitoshi Asakawa, Takeshi Fukuma, Markus Linder, and Tetsuya Haruyama
    • Journal Title

      Colloids and Surfaces B

      Volume: 123 Pages: 803-808

    • DOI

      10.1016/j.colsurfb.2014.10.018

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Coating of electrodes with self-organized HFBI membrane; structure and electrochemical properties2015

    • Author(s)
      Ryota Yamasaki, Hitoshi Asakawa, Takeshi Fukuma, and Tetsuya Haruyama
    • Organizer
      PACIFICHEM 2015
    • Place of Presentation
      アメリカ合衆国ハワイ州
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] HFBI自己組織化による液滴形状変化の解析と膜構造評価2015

    • Author(s)
      山﨑亮太、Michael Lienemann、Markus Linder、淺川雅、福間剛士、春山哲也
    • Organizer
      第24回インテリジェント材料システムシンポジウム
    • Place of Presentation
      東京女子医科大学
    • Year and Date
      2015-01-19
    • Related Report
      2014 Research-status Report
  • [Presentation] 分子相の搖動設計による分子界面の高機能化2015

    • Author(s)
      高辻義行、春山哲也
    • Organizer
      第24回シンテリジェント材料/システムシンポジウム
    • Place of Presentation
      東京女子医科大学
    • Year and Date
      2015-01-19
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Understand the consequences of self-organized HFBI membrane at the air/water interface and water/solid interface2014

    • Author(s)
      Ryota Yamasaki, Megumi Mori, Michael Lienemann, Markus Linder, and Tetsuya Haruyama
    • Organizer
      2nd International Symposium on Applied Engineering and Sciences
    • Place of Presentation
      Kyushu Institute of Technology
    • Year and Date
      2014-12-20 – 2014-12-21
    • Related Report
      2014 Research-status Report
  • [Presentation] HFBIタンパク質による規則構造を形成した電極の電気化学特性2014

    • Author(s)
      山﨑亮太、Michael Lienemann、Markus Linder、春山哲也
    • Organizer
      電気化学会第81回秋季大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2014-09-27 – 2014-09-28
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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