Experimental and Theoretical Studies of Molecular Motions inLiquids

液体分子运动的实验和理论研究

• 批准号: 8810537
• 负责人: Daniel Kivelson
• 金额: $ 41.15万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-11-01 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8810537&HistoricalAwards=false
• 关键词: Experimental; Theoretical; Studies; Molecular; Motions

Professor Kivelson is supported by a grant from The Experimental Physical Chemistry Program to study molecular motions in liquids using both experimental and theoretical approaches. Particular emphasis is placed on the study of supercooled liquids as they approach the glass transition temperature, and liquid systems undergoing chemical reaction. As supercooled liquids approach the glass transition temperature they become very viscous, and relaxation processes become slow and more complex than for low viscosity fluids at higher temperatures. Professor Kivelson's research group is studying the behavior of small molecules and polymer solutions near the glass transition temperature. In addition, other studies are aimed at understanding the motion of reacting groups through surrounding fluid and across activation barriers for chemical reactions. This area of research is of fundamental importance to the study of chemical reactions in the liquid phase. The common theoretical framework for understanding these phenomena consists of a correlation function description of generalized hydrodynamics. The primary experimental technique used by Kivelson's group to study these molecular motions is quasielastic light scattering.

Kivelson教授得到了The 实验物理化学计划，研究分子 在液体中的运动， 接近。 特别强调研究 在接近玻璃化转变时的过冷液体 温度和液体系统进行化学反应。 随着过冷液体接近玻璃化转变 温度，它们变得非常粘稠， 变得比低粘度流体更慢且更复杂， 更高的温度。 基韦尔森教授的研究小组是 研究小分子和聚合物溶液的行为 接近玻璃化转变温度。 此外，其他 研究的目的是了解反应的运动 通过周围的液体和激活障碍 进行化学反应。 这一研究领域是 对化学反应的研究至关重要， 液相。 理解这些问题的共同理论框架 现象由相关函数描述组成， 广义流体力学 主要实验技术 Kivelson小组用来研究这些分子运动的 准弹性光散射