Dynamic Light Scattering from Static and Dynamic Fluctuations in Inhomogeneous Media
Dynamic Light Scattering from Static and Dynamic Fluctuations in Inhomogeneous Media
复制标题
非均匀介质中静态和动态波动的动态光散射
DOI：
10.1143/jpsj.71.2873
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发表时间：
2002
影响因子：
1.7
通讯作者：
S. Hirotsu
中科院分区：
文献类型：
--
作者：
H. Furukawa;S. Hirotsu
本文给出了用动态光散射法测量非均匀、非遍历系统的光子相关函数的一般方程。与以前对同一主题的研究相比，我们的推导包括最一般的情况下，是免费的任何假设的性质的动态波动。目前的治疗提供了一个准则，应用动态光散射技术来研究动态特性的无序系统在其最一般的情况下，不仅静态，而且动态特性取决于位置。著名的Siegert关系和Pusey-van Megen方程作为特例在我们的一般处理中被证明是可导的。应用导出的方程到真实的聚合物凝胶系统进行了讨论。作为进一步的发展，我们的配方将使用在复杂系统的相变和临界现象的研究。
General equations for photon-correlation functions measured by dynamic-light-scattering on inhomogeneous, non-ergodic systems are presented. In contrast to previous studies on the same subject, our derivation includes the most general case that is free from any assumption on the nature of dynamic fluctuations. The present treatment provides a guideline for applying a dynamic-light-scattering technique to investigate dynamic properties of disordered systems in their most general situation where not only static but also dynamic properties depend on position. The well known Siegert relation and Pusey–van Megen equation are shown to be derivable as a special case in our general treatment. Application of the derived equations to real polymeric gel systems is discussed. As further developments, our formulation will be of use in studies of phase transitions and critical phenomena in complex systems.