Wide band spectroscopy of liquid surface ripplon by optical beating techniques

通过光学跳动技术进行液体表面波纹的宽带光谱分析

• 批准号: 02452082
• 负责人: TAKAGI Kenshiro
• 金额: $ 5.06万
• 依托单位: Institute of Industrial Science, University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02452082/
• 关键词: Ripplon; Spectroscopy; Liquid surface physics; Light scattering; optical beating technique; Langmuir films; 液体表面単分子膜; ゲル

Observation of waves propagating on liquid surfaces and interfaces provides us with interesting informations on various physical properties and their dynamics localized in the close vicinity of the surfaces.Previous studies on surface waves have been made onlyin the frequency range below several tens of kHz : both temporal and spatial resolution has been insufficient for the above purposes. The aim of this study, therefore, is to develop a new technique for measuring liquid surface and interface waves, which is useful over an extensive frequency range up to MHz region. We also intend to apply it for the dynamical study of liquid surfaces.In the investigation by this grant-in-aid, we obtained various important results which are summerized as follows.1) We established a new technique for wide band ripplon spectroscopy. The frequency of the measurement has been extended up to 6 MHz which is more than hundred times higher than the conventional.2) Frequency dependence of the surface tension has been measured for various pure simple liquids including water.3) Dynamic mechanical properties of the Langmuir films has been successfully measured by the ripplon spectroscopy technique.4) Gelation process of the polymer solution surface has been studied by observing the ripplon dispersion.

对在液体表面和界面上传播的波的观察为我们提供了有关表面附近各种物理特性及其动力学的有趣信息。以前对表面波的研究仅在低于几十kHz的频率范围内进行：时间和空间分辨率都不足以满足上述目的。因此，本研究的目的是开发一种测量液体表面波和界面波的新技术，该技术在高达 MHz 区域的广泛频率范围内很有用。我们还打算将其应用于液体表面的动力学研究。在本次资助的研究中，我们取得了一些重要的成果，现总结如下：1）建立了宽带波纹谱新技术。测量频率已扩展至6 MHz，比传统方法高了一百倍以上。2）测量了包括水在内的各种纯简单液体的表面张力的频率依赖性。3）通过波纹光谱技术成功测量了Langmuir薄膜的动态力学性能。4）通过观察波纹色散研究了聚合物溶液表面的凝胶化过程。

项目成果

H. Kikuchi, K. Sakai and K. Takagi: "Surface tension weve on gelatin gel" Jpn. J. Appl. Phys.30. L1168-1170 (1991)

H. Kikuchi、K. Sakai 和 K. Takagi：“明胶凝胶上的表面张力编织”Jpn。

K.Sakai,P.-K.Choi,H.Tanaka and K.Takagi: "Measurement of thermal ripplon on liquid surface by light scattering technique" Japanese Journal of Applied Physics. S29. 22-24 (1990)

K.Sakai、P.-K.Choi、H.Tanaka 和 K.Takagi：“通过光散射技术测量液体表面的热波纹”日本应用物理学杂志。

高木 堅志郎,酒井 啓司: "レ-ザ-を利用した最近の超音波スペクトロスコピ-" 応用物理. 60. 264-269 (1991)

Kenshiro Takagi、Keiji Sakai：“最近使用激光的超声波光谱”应用物理 60. 264-269 (1991)。

K.Sakai,H.Tanaka,K.Takagi: "Dispersion of thermal ripplon on free surface of pure liquids measured up to 6MHz" Japanese Journal of Applied Physics. 29. L2247-2250 (1990)

K.Sakai、H.Tanaka、K.Takagi：“测量高达 6MHz 的纯液体自由表面上的热波纹分散”日本应用物理学杂志。

K. Sakai, P. -K. Choi, H. Tanaka and K. Takagi: "A new light scattering technique for a wide band ripplon spectroscopy at the MHz region" Rev. Sci. Instrum.62. 62-65 (1991)

K.酒井，P.-K。