Royall C Patrick, Dzubiella Joachim, Schmidt Matthias, van Blaaderen Alfons
Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
Phys Rev Lett. 2007 May 4;98(18):188304. doi: 10.1103/PhysRevLett.98.188304. Epub 2007 May 3.
We investigate sedimentation of model hard-sphere-like colloidal dispersions confined in horizontal capillaries using laser scanning confocal microscopy, dynamical density functional theory, and Brownian dynamics computer simulations. For homogenized initial states we obtain quantitative agreement of the results from the respective approaches for the time evolution of the one-body density distribution and the osmotic pressure on the walls. We demonstrate that single-particle information can be obtained experimentally in systems that were initialized further out of equilibrium such that complex lateral patterns form.
我们使用激光扫描共聚焦显微镜、动态密度泛函理论和布朗动力学计算机模拟，研究了限制在水平毛细管中的模型硬球状胶体分散体的沉降。对于均匀的初始状态，我们得到了各方法关于一体密度分布随时间演化以及壁上渗透压的结果的定量一致性。我们证明，在初始时处于更远离平衡状态从而形成复杂横向图案的系统中，可以通过实验获得单粒子信息。
