Terahertz reflection spectroscopy of Debye relaxation in polar liquids [Invited]
Terahertz reflection spectroscopy of Debye relaxation in polar liquids [Invited]
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DOI：
10.1364/josab.26.00a113
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发表时间：
2009-09-01
影响因子：
1.9
通讯作者：
Jepsen, Peter Uhd
中科院分区：
文献类型：
--
作者：
Moller, Uffe;Cooke, David G.;Jepsen, Peter Uhd
太赫兹（THz）辐射与水溶液中的分子间氢键网络强烈相互作用。太赫兹光谱区域中液态水和水溶液的介电性质与液体溶液的微观动力学密切相关，因此太赫兹光谱提供了对极性液体中基本分子间相互作用的重要见解。同时，太赫兹辐射和液体之间的强烈和特征相互作用提供了一种方法，用于容器内液体的分类，因此太赫兹区域适合于远程检测瓶装液体的一些特性。在这里，我们提出了太赫兹光谱和建模的水-乙醇混合物的审查，并建立水-乙醇混合物的介电函数和它们的一些热力学性质之间的联系。然后，我们审查如何知识的水溶液的混合物的介电函数可以用于检查瓶内的液体。最后，我们制定了一些限制太赫兹反射光谱在危险液体识别的适用性。(C)2009年美国光学学会
Terahertz (THz) radiation interacts strongly with the intermolecular hydrogen-bond network in aqueous liquids. The dielectric properties of liquid water and aqueous solutions in the THz spectral region are closely linked to the microscopic dynamics of the liquid solution, and hence THz spectroscopy offers an important insight into fundamental intermolecular interactions in polar liquids. At the same time, the strong and characteristic interaction between THz radiation and liquids offers a methodology for the classification of liquids inside containers, and hence the THz region is suitable for remote detection of some of the properties of bottled liquids. Here we present a review of THz spectroscopy and modeling of water-ethanol mixtures, and establish a link between the dielectric function of water-ethanol mixtures and some of their thermodynamic properties. We then review how the knowledge of the dielectric function of aqueous mixtures can be used for inspection of liquids inside bottles. Finally we draw up some of the limits to the applicability of THz reflection spectroscopy in the identification of dangerous liquids. (C) 2009 Optical Society of America