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Study on High Frequency Dynamics of Liquid Surface by Laser Induced Surface Vibration Spectroscopy

Research Project

Project/Area Number 11450036
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Applied physics, general
Research InstitutionUniversity of Tokyo

Principal Investigator

SAKAI Keiji  Institute of Industrial Science, University of Tokyo, Associate Professor, 生産技術研究所, 助教授 (00215584)

Co-Investigator(Kenkyū-buntansha) SAKAMOTO Naoto  Institute of Industrial Science, University of Tokyo, Assistant Professor, 生産技術研究所, 助手 (10282592)
TAKAGI Kenshiro  Institute of Industrial Science, University of Tokyo, Professor, 生産技術研究所, 教授 (90013218)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥12,600,000 (Direct Cost: ¥12,600,000)
Fiscal Year 2000: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1999: ¥9,200,000 (Direct Cost: ¥9,200,000)
KeywordsLiquid Surface Physics / Surface Tension / Surface Visco-elasticity / Ripplon / Radiation Pressure / Langmuir Film / Ripplon Spectroscopy / 表面張力波 / 光誘起表面変形 / 表面弾性率 / ラングミュア膜 / 表面緩和
Research Abstract

We developed a new technique of picking up the liquid surface in a non-contact manner by a cw-laser radiation. The momentum change of light at the laser transmission through the air-liquid interface appears as the radiation pressure, which deforms the liquid surface into the shape determined by the balance between the Laplace force of the curved surface and the radiation pressure. The displacement of the liquid surface is inversely proportional to the surface tension, which was measured by an optical probe. The dynamic response of the liquid surface deformation was theoretically derived under the periodical modulation of the radiation pressure. The experimentally observed spectra were in good agreement with the theory giving the dynamic properties of the liquid surface.
Objectives of microscope were employed to excite the high frequency surface vibration. The laser spot was focused on the liquid surface within the diameter of several microns and the surface vibration was excited over the frequency of 1 MHz.
We also tried to excite the wave propagating on the liquid surface with linear a wavefront. The laser light was linearly focused on to the liquid surface with a cylindrical lens with the width of several microns and the length of 200 microns. Coherent wave was successfully excited in the frequency range from 100 Hz up to several tens of kHz. We can accurately determine the mechanical properties on and near the surface, such as surface tension and shear viscosity, by measuring the surface wave propagation.
The technique of the laser induced surface deformation (LISD) has a potential as the measurement tool of the surface dynamic properties, such as the time dependent surface tension and surface visco-elasticity.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] D.Mizuno,K.Hattori,N.Sakamoto K.Sakai: "Observation of Slow dynamics on a liquid surface by time-resoluved ripplon light scattering spectroscopy"Langmuir. 16. 643-650 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Sakaimoto,K.Sakai and K.Takagi: "Layering transition at the free surface of 12CB observed by scanning angle reflectmetry"J.Chem.Phys.. 112. 946 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Sakai,D.Mizuno and K.Sakai: "Measureent of liquid surface properties by laser-induced surface deformation spectroscopy"Physical Review E. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hosoda,K.Sakai and K.Takagi: "Doppler shift of ripplon spectrum observed under surface flow"Jpn.J.Appl.Phys.. 40. L231-233 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] D.Mizuno, K.hattori, N.Sakaimoto, K.Sakai and K.Takagi: "Observation of Slow dynamics on a liquid surface by time-resoluved ripplon light scattering spectroscopy"Langmuir. 16. 643 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Sakaimoto, K.Sakai and K.Takagi: "Layering transition at the free surface of 12CB observed by scanning angle reflectmetry"J.Chem.Phys.. 112. 946 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Sakai, D.Mizuno and K.Sakai: "Measurement of liquid surface properties by laser-induced surface deformation spectroscopy"Physical Review E. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hosoda, K.Sakai and K.Takagi: "Doppler shift of ripplon spectrum observed under surface flow"Jpn.J.Appl.Phys.. 40. L231 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Sakai,D.Mizuno and K.Takagi: "Measurement of liquid surface properties by laser induced surface deformation spectroscopy"Physical Review E. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] D.Mizuno,K.Hattori,N.Sakamoto,K.Sakai,K.Takagi: "Observation of Slow Dynamics on a Liquid Surface by Time-Resolved Ripplon Light Scattering Spectroscopy"Lagmuir. (in press).

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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