Effect of Brownian Motion on the Interaction of Polymer- Coated Microspheres

全内反射显微镜（TIMR）是一种 由私家侦探开发和他的合著者来测量绝对的 亚微米颗粒和固体壁之间的距离， 势能分布和扩散系数。 一个 提出了通过施加 微球上的辐射压力，以使微球膨胀， 应用领域以及方法效率。 的 TIRM将用于研究运动和相应的力 （空间排斥，桥接力）的单一聚合物涂层 微球体靠近墙壁。 拟议 技术补充了表面力测量方法 在胶态分散体特定应用范围中。 本项目旨在改进TIMR技术， 允许研究基本的相互作用机制， 胶体系统的稳定性问题。

Total internal-reflection microscopy (TIMR) is a technique developed by the P.I. and his co-authors to measure absolute distances between a submicron particle and a solid wall, the potential energy profiles and diffusion coefficients. An improvement of TIMR performance is proposed by exerting radiation pressure on the microsphere in order to expand the area of application as well as the method efficiency. The TIRM will be used to study the motion and corresponding forces (steric repulsion, bridging forces) of a single polymer coated microsphere in the proximity of a wall. The proposed techniques complements the surface force measurement approach in a specific range of application for colloidal dispersions. This project aims to an improved TIMR technique, which would allow to study fundamental interaction mechanisms and stability problems in colloidal systems.