Development of a new experimental system for hypersonic relaxation study

开发用于高超声速弛豫研究的新实验系统

• 批准号: 03555011
• 负责人: TAKAGI Kenshiro
• 金额: $ 9.09万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03555011/
• 关键词: HRB method; ultrasonic relaxation; ultrasonic spectroscopy; liquid properties; biomaterials; physical acoustics; 波体・溶液物性; ハイパーソニックスペクトロスコピー; 振動緩和; 光ヘラロダイン法; ハイパ-ソニックスペクトロスコピ-

Our previous study in the past few years had yielded a new ultrasonic light scattering technique which is useful for investigating dynamic properties of molecules and/or molecular associations through the measurement of ultrasonic velocity and absorption in ultra-high frequency range. The aim of the present research has been focused onto a wider distribution of this technique (high-resolution Bragg reflection technique) over the field of ultrasonic relaxation studies in soft materials, which are commonly conducted by physicists, chemists and biologists.The major results accomplished during the past three years are :(1) Available frequency range of ultrasonic spectroscopy was expanded over 2 GHz with sufficient resolution and accuracy.(2) The high-resolution Bragg reflection technique was further developed into a high-resolution spectroscopy of Brillouin scattering experiment for observing high energy phonons.(3) The newly established technique was applied for the study of molecular reorientational motion of nematogen (molecules which form nematic-liquid crystal phase below a certain temperature).On the basis of these results, we are continuing an intensive study for even wider frequency range.

在过去的几年中，我们先前的研究产生了一种新的超声光散射技术，该技术可通过测量超声波速度和超高频率范围内的超声速度和吸收来研究分子和/或分子关联的动态特性。本研究的目的集中在该技术（高分辨率Bragg反射技术）上超声材料中的超声波弛豫研究领域的更广泛分布，这是物理学家，化学家和生物学家通常进行的。在过去的三年中：（1）超声光谱的可用频率范围在2 GHz上扩展，并具有足够的分辨率和准确性。（2）高分辨率的Bragg反射技术进一步发展为Brillouin散射实验的高分辨率光谱（3）将新建立的技术应用于线索的分子重新定位运动（在一定温度以下的列米液晶相）的分子重新定位运动研究中。针对更广泛频率范围的密集研究。

项目成果

Keiji Sakai and Kenshiro Takagi: "High Frequency measuremant of surface elasticity of a soluble monolayer at water surface by ripplon light scattering method" Japanese Journal of Applied Physics.

Keiji Sakai 和 Kenshiro Takagi：“通过波纹光散射法对水面可溶单层的表面弹性进行高频测量”日本应用物理学杂志。

K.Hattori,K.Sakai K.Takagi: "Light beating spectroscopy of Brillouin in solid polymer" Jpn.J.Appl.Phys.(submitted).

K.Hattori、K.Sakai K.Takagi：“固体聚合物中布里渊的光跳动光谱” Jpn.J.Appl.Phys.（已提交）。

T.Matsuoka,K.Sakai K.Takagi: "Optical beating Brillouin spectroscpy" Jpn.J.Appl.Phys.31S-1. 69-71 (1992)

T.Matsuoka，K.Sakai K.Takagi：“光学跳动布里渊光谱”Jpn.J.Appl.Phys.31S-1。

K.Sakai K.Takagi: "High frequency measurement of surface elasticity of a solble monolayer at water surface" Jpn.J.Appl.Phys.32. 2199-2202 (1993)

K.Sakai K.Takagi：“水面可溶单层表面弹性的高频测量”Jpn.J.Appl.Phys.32。

T.Matsuoka,K.Sakai,K.Takagi: "Light beating spectroscopy of polarized and depolarized scattering" Phys.Rev.Lett.71. 1510-1513 (1993)

T.Matsuoka、K.Sakai、K.Takagi：“偏振和去偏振散射的光跳动光谱”Phys.Rev.Lett.71。