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: 9122589
• 负责人: Bruce Ackerson
• 金额: $ 15万
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-01 至 1996-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9122589&HistoricalAwards=false
• 关键词: Structure; Dynamics; Phase; Transitions; Suspensions

The unique length and time scales characteristic of suspensions of charge stabilized polymer spheres are exploited to study the basic equilibrium and nonequilibrium properties of strongly interacting spherical particle systems. Proposed experiments include optical microscopy, light scattering intensity fluctuation spectroscopy, laser trapping of particles, x-ray and neutron scattering, and digital image processing. Nonequilibrium studies will focus on shear induced structure changes in suspension samples which form liquid-like and crystal-like structures in equilibrium, the dynamics of the crystallization process, and the glass transition. 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 continue, support and extend work on local liquid structure, and nonequilibrium behavior.

独特的长度和时间尺度的特点暂停 电荷稳定的聚合物球被用来研究基本的 强相互作用的平衡和非平衡性质 球形粒子系统 建议的实验包括光学 显微镜，光散射强度波动光谱， 激光捕获粒子、X射线和中子散射，以及 数字图像处理 非平衡研究将集中在 剪切引起的悬浮液样品的结构变化， 平衡状态下的液体和晶体结构， 结晶过程的动力学和玻璃化转变。 平衡研究将调查当地秩序，动力学和 一维、二维和三维的相变。 理论 包括模拟和分子动力学计算机模拟的研究 将继续，支持和扩展本地液体结构的工作， 和非平衡行为。