项目名称: 液体界面附近胶体体系的相互作用和动力学研究
项目编号: No.11474054
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 数理科学和化学
项目作者: 陈唯
作者单位: 复旦大学
项目金额: 80万元
中文摘要: 本计划拟通过显微成像和多粒子追踪技术研究在液体界面 (包括水气和水油界面)附近带电胶体颗粒体系的结构与颗粒间相互作用的关系,以及与之相关联的扩散动力学的性质。主要研究目标如下: (1)改变水相中的电解质离子浓度,研究界面胶体颗粒间的相互作用势的变化,以及浸润位置对颗粒间的相互作用势和胶体颗粒自扩散的影响。 (2)通过对胶体颗粒互扩散关联的测量来研究界面上多相粒子间胶体流体力学相互作用的性质,及该性质如何受边界条件影响。
中文关键词: 软物质;胶体颗粒;扩散;液体界面;相互作用
英文摘要: The charged micro-size spheres disperse near the interface between oil(air) and water,which forms a typical quasi 2D colloidal system. The viscoelestic property and mechanical structure of such a system are determined by the interaction between the spheres and properties of both fluid phases. we plan to experimetally study the interaction and dynamics of the interfacial colloidal spheres through the microscopic and mutil-particles tracking technology. Following subjects are interested in this plan: (1)How the interaction between the spheres could be influenced by the ion strength in the acqueous phase。How the self diffusion behavior of hydrophilic spehres is influenced by the amount of surface charge of colloidal spheres. (2)How the hydrodynamic interaction behaves when two types of particles exist in the sytem and how this interaction will be influenced by the boudary conditions.
英文关键词: soft matter;colloid;diffusion;liquid interface;interaction