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Effect of liquid flow on the forces and physical properties of surfaces in liquids

Research Project

Project/Area Number 19K05264
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionShinshu University

Principal Investigator

McNamee Cathy  信州大学, 学術研究院繊維学系, 教授 (40504551)

Co-Investigator(Kenkyū-buntansha) 小川 智之  東北大学, 工学研究科, 准教授 (50372305)
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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsフォース測定 / 液体の流れ / 相互作用 / Force experiments / Data analysis / Discussion / Manuscript preparation / Experiment planning / data analysis / discussion / non-equilibrium forces
Outline of Research at the Start

In this study we will determine how a flow in a liquid will affect the forces acting between two surfaces in solutions. We will determine the effect of flow on 1) hydrophobic surfaces stabilized by surfactants adsorbed via physical forces, 2) surfaces stabilized by surfactants adsorbed via chemical forces, and 3) on the structuring of particles between surfaces in aqueous solution. We will achieve this by using our newly developed combined Atomic Force Microscope-peristaltic pump system.

Outline of Final Research Achievements

Many systems require particles or soft matter that are dispersed in liquids to flow through confined areas. Surface forces are well understood when the liquid contains no flow. However, it is unclear how a flow in a liquid affects surface forces. In this study, we used a combined Atomic Force Microscope-peristaltic pump system to determine how a flow in the liquid between two surfaces affects the forces of a system. We studied (1) the effect of the surfactant charge and concentration on the change in the forces between two charged surfaces in surfactant solutions by a liquid flow, (2) the effect of surface roughness on the change in the surface forces between two charged surfaces by a liquid flow, and (3) the effect of flow on surfaces stabilized by polymers. The results of this study will improve the performance of nano-technological or biological systems that require the movement of particles or soft matter through confined areas, e.g. ink-jet printing.

Academic Significance and Societal Importance of the Research Achievements

液体に分散した粒子やソフトマターが狭い領域を流れる状況は実世界でよくみられるが、液体の流れが表面力にどのように影響するかは不明である。身の回りで一般的な系である(1)液体中の界面活性剤、(2)粗い表面、および(3)ポリマーについて、液流が表面力にどのように影響するかを評価した。その結果、液流が表面力に与える影響は系に依存することが分かった。本研究の結果は、狭い領域を通る粒子やソフトマター制御を必要とするナノテクノロジーや生物学的システムのパフォーマンスを改善すると期待できる。

Report

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

    (8 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Journal Article] Use of Mixed Langmuir Films of Nanoparticles to Form Metal Oxide Materials with the Optimal Surface Charge2021

    • Author(s)
      Koutarou Kanno, Genki Sase, and Cathy E. McNamee
    • Journal Title

      Langmuir

      Volume: 37 Issue: 25 Pages: 7643-7654

    • DOI

      10.1021/acs.langmuir.1c00388

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of the Surfactant Charge and Concentration on the Change in the Forces between Two Charged Surfaces in Surfactant Solutions by a Liquid Flow2020

    • Author(s)
      Cathy E. McNamee, H. Kawakami
    • Journal Title

      Langmuir

      Volume: 36 Issue: 8 Pages: 1887-1897

    • DOI

      10.1021/acs.langmuir.9b03377

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Forces between a hard surface and an air-aqueous interface with and without films2020

    • Author(s)
      Cathy E.McNamee, ShinpeiYamamoto
    • Journal Title

      Current Opinion in Colloid & Interface Science

      Volume: 47 Pages: 1-15

    • DOI

      10.1016/j.cocis.2019.12.003

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Change in the forces between two charged surfaces in aqueous surfactant solutions by a liquid flow2021

    • Author(s)
      Cathy E. McNamee
    • Organizer
      第72回コロイドおよび界面化学討論会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Change in the inter-surface forces between two charged surfaces containing salts by the presence of a liquid flow2020

    • Author(s)
      Cathy E.McNamee
    • Organizer
      17th Australia-Japan Colloids Symposium
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 界面活性剤水溶液中の荷電表面間相互作用に及ぼす液流の効果2020

    • Author(s)
      Cathy E.McNamee
    • Organizer
      第72回コロイドおよび界面化学討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] Effect of a Liquid Flow on the Forces between Charged Surfaces2019

    • Author(s)
      Cathy E.McNamee
    • Organizer
      4th International Mini-Symposium on Surface Forces
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 流体中の粉体表面間相互作用に関する基礎的検討―流れは表面間相互作用にどのような影響をあたえるか?2019

    • Author(s)
      Cathy E.McNamee
    • Organizer
      第1回 輸送分科会、長野、日本
    • Related Report
      2019 Research-status Report
    • Invited

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

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