Presidential Young Investigator Award: Molecular Behavior in Complex Fluid Materials

多尔·本-阿莫茨教授得到了 实验物理化学计划的研究 分子在复杂流体中的行为 的目标 这些研究是为了了解结构， 在微观层面上的这些系统的动态。 的 研究分为三部分：（1）拉曼光谱和时间分辨光谱 荧光/磷光去偏振研究 分子的振动和旋转的变化 湍流，（2）表面吸附分子的研究， 固体-液体界面在高压下由相同的 技术，和（3）发展分子探针原位 温度、压力、粘度的光学测量 不均匀流体 %%% 研究中需要解决的关键问题， 总统青年研究员奖的目标是：在多大程度上 湍流结构在分子尺度上是否持续存在？是 局部溶剂笼密度分布显著 受到湍流的影响 对流体行为的理解 在湍流下的润滑具有重要的意义 和减阻技术。 拉曼光谱将是 用于识别液体表面的化学变化， 与高表面积金属粉末接触。 一个长期目标 是发展新的催化，合成， 分离和分析复杂的流体材料。

Professor Dor Ben-Amotz is supported by a grant from the Experimental Physical Chemistry Program for studies of the behavior of molecules in complex fluid materials. The goal of these studies is to gain an understanding of the structure and dynamics in these systems at the microscopic level. The research is in three parts: (1) Raman and time-resolved fluorescence/phosphorescence depolarization studies of the changes in the vibration and rotation of molecules under turbulent flow, (2) studies of surface-adsorbed molecules at solid-liquid interfaces at high pressures by the same techniques, and (3) development of molecular probes for in situ optical measurements of temperature, pressure, viscosity in inhomogeneous fluids. %%% The key questions to be adressed in the research supported by this Presidential Young Investigator Award are: To what extent do turbulent structures persist at the molecular scale? Is the distribution of local solvent cage densities significantly affected by turbulent flow? An understanding of fluid behavior under turbulent flow has important implications in lubrication and drag reduction technologies. Raman spectroscopy will be used to fingerprint chemical changes on surfaces of fluids in contact with high surface area metal powders. A long term goal is the development of new strategies for catalysis, synthesis, separation, and analysis of complex fluid materials.