Terahertz dynamics of complex liquids

复杂液体的太赫兹动力学

• 批准号: 16204032
• 负责人: KOJIMA Seiji
• 金额: $ 24.46万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16204032/
• 关键词: Chemical Physics; Bio-physics; Condensed matter physics; Basic theory of condensed matter; optical properties; テラヘルツ光; フェムト秒レーザー; 時間領域分光; 緩和現象; 赤外活性; 複雑液体; ガラス; 誘電率

The commercially available conventional Terahertz time domain spectrometer (THz-TDS) is not suitable for the studies of dynamical properties of complex liquids. Therefore, the specially ordered THz-TDS was purchased from Tochigi Nikon Corporation. Since for the study of the fast relaxation process and boson peaks related to cooperative motion, the low energy excitation below 1.0 THz is very important. However, the convergent beam is used in the conventional spectrometer and the accurate determination of the phase delay of the transmitted wave is difficult. In the present investigation, the parallel beam with 5 cm diameter is used to transmit a sample as plane waves. By using this spectrometer we have systematically studied the following three kinds of materials, (l) alcohol aqueous solution, (2) cryo-protectant materials such as poly alcohols, (3) alkali borate glasses. The real and imaginary parts of complex dielectric constants have been determined from 0.1 THz to 3.0 THz. These results have been analyzed by considering non-Debye relaxation and vibrational states of medium-range order.

传统的太赫兹时域光谱仪（THz-TDS）不适用于复杂液体动力学性质的研究。因此，特别订购的THz-TDS是从Tochigi Nikon Corporation购买的。由于对于研究快弛豫过程和与合作运动相关的玻色子峰，低于1.0 THz的低能激发是非常重要的。然而，在传统的光谱仪中，使用会聚光束，并且难以精确地确定透射波的相位延迟。在本研究中，使用直径为5 cm的平行光束作为平面波传输样品。利用这台谱仪，我们系统地研究了（1）乙醇水溶液，（2）多元醇等低温保护剂，（3）碱金属硼酸盐玻璃等三种物质。在0.1 THz ~ 3.0 THz范围内测定了复介电常数的真实的和虚部。这些结果已被分析，考虑非德拜弛豫和振动态的中程秩序。

项目成果

Dielectric Characteristic of water solutions of ethanol in THz region

太赫兹区乙醇水溶液的介电特性

• 发表时间: 2005
• 期刊: J.Kor.Phys.Soc. (in press)
• 作者: Okudaira;K.;T.Noguchi;T.Nakamura;S.Sugita;Y.Sekine;H.Yano;T.D. Matsuda.;H.Kitahara et al.
• 通讯作者: H.Kitahara et al.

Brillouin Scattering of Liquid Glass Transition in Lithium Borate Glass

硼酸锂玻璃中液态玻璃化转变的布里渊散射

• 发表时间: 2006
• 期刊: Jpn. J. Appl. Phys. 45
• 作者: Y.Ike;Y.Matsuda;S.Kojima;M.Kodama
• 通讯作者: M.Kodama

Brillouin scattering study of polymer dynamics

聚合物动力学的布里渊散射研究

• 发表时间: 2006
• 期刊: Materials Science and Engineering A442
• 作者: Y.Ike;S.Kojima
• 通讯作者: S.Kojima

ガラス転移のダイナミクス:リチウムホウ酸塩ガラス

玻璃化转变动力学：硼酸锂玻璃

• 发表时间: 2006
• 期刊: 日本中性子科学会誌[波紋] 16
• 作者: Hayashi;Y. -Y.;Nishizawa;S.;Takehiro;S.;Yamada;M.;Ishioka;K.;Yoden;S.;小島誠治
• 通讯作者: 小島誠治

Brillouin scattering study of glass-forming propylene glycol

玻璃形成丙二醇的布里渊散射研究

• 发表时间: 2006
• 期刊: Materials Science and Engineering 442
• 作者: S.Tsukada;Y.Ike;J.Kano;S.Kojima
• 通讯作者: S.Kojima