Structure, Dynamics and Phase Transitions of Suspensions of Charged Polymer Spheres in Equilibrium and Nonequilibrium States

平衡和非平衡态带电聚合物球悬浮液的结构、动力学和相变

• 批准号: 8807443
• 负责人: Noel Clark
• 金额: $ 20.27万
• 依托单位: University of Colorado at Boulder
• 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: 1988-10-15 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8807443&HistoricalAwards=false
• 关键词: Structure; Dynamics; Phase; Transitions; Suspensions

The unique length and time scales characteristic of aqueous suspensions of charged polymer spheres are exploited to study the basic equilibrium and nonequilibrium properties of strongly interacting spherical particle systems. Experiments will include optical microscopy, light scattering intensity fluctuation spectroscopy, laser trapping of particles, and neutron scattering, techniques which have already been developed, as well as novel applications of other methods including digital image processing and optical total internal reflection. Nonequilibrium studies will focus on shear induced structure changes in suspension samples which form liquid-like and solid-like structures in equilibrium. Equilibrium studies will investigate local order, dynamics and phase transitions in one, two and three dimensions. Theoretical studies including analog and molecular dynamic computer simulation will support and extend work on local liquid structure, laser trapping and nonequilibrium behavior.

独特的长度和时间尺度特征的水 带电聚合物球的悬浮液被用来研究 强非线性系统的基本平衡和非平衡性质 相互作用的球形粒子系统 实验将包括 光学显微镜，光散射强度涨落，光散射强度涨落 光谱学、激光捕获粒子和中子 散射，已经开发的技术，以及 作为其他方法的新应用， 加工和光学全内反射。 非平衡 研究将集中在剪切引起的结构变化， 形成液体状和固体状的悬浮液样品 平衡的结构。 平衡研究将进行调查 局域有序，动力学和相变在一，二和三 尺寸. 理论研究，包括模拟和分子 动态计算机模拟将支持和扩展当地的工作， 液体结构、激光陷阱和非平衡行为。