Optical Probe Studies of Structured Fluids

乔治·菲利斯教授获得了理论与计算化学项目的资助，使用光学探针进行结构流体的研究。这项工作的目的是研究具有扩展局部结构的液体中的扩散和输运，如胶束、囊泡和微乳液。主要的物理方法是光散射光谱法，它可以确定介观颗粒通过两亲性溶液的扩散系数。计算机模拟被用来检查小分子通过由大的不移动的球体形成的模型玻璃孔的扩散。这些模拟结合了蒙特卡罗动力学、分子动力学和布朗动力学计算，模拟了粒子运动如何受到随机静态势的约束。表面活性剂系统和多孔介质中的探针运动可以模拟各种重要的科学技术过程，包括复杂结构的自组织、活细胞内扩散、三相催化和生物化学工程中聚合物的酶促后处理。

Professor George Phillies is supported by a grant from the Theoretical and Computational Chemistry Program to perform studies of structured fluids using optical probes. The objective of the work is to study diffusion and transport in liquids with extended local structures such as micelles, vesicles and microemulsions. The primary physical method is light scattering spectroscopy which can determine the diffusion coefficients of mesoscopic particles through amphiphile solutions. Computer simulations are used to examine the diffusion of small molecules through the pores of model glass formed from large immobile spheres. These simulations, which incorporate Monte Carlo dynamics, molecular dynamics, and Brownian dynamics computations, model how particle motions are constrained by random static potentials. %%% Probe motion in surfactant systems and porous media model aspects of a wide variety of important scientific and technical processes, including self-organization of complex structures, intracellular diffusion in living cells, three phase catalysis, and enzymatic post-processing of polymers in biochemical engineering.