Stick boundary conditions and rotational velocity auto-correlation functions for colloidal particles in a coarse-grained representation of the solvent

被引：71
作者：
Padding, JT
Wysocki, A
Löwen, H
Louis, AA
机构：
[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
[2] Univ Dusseldorf, Inst Theoret Phys 2, D-40225 Dusseldorf, Germany
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2005年 / 17卷 / 45期
关键词：
D O I：
10.1088/0953-8984/17/45/027
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We show how to implement stick boundary conditions for a spherical colloid in a solvent that is coarse-grained by the method of stochastic rotation dynamics. This allows us to measure colloidal rotational velocity autocorrelation functions by direct computer simulation. We find quantitative agreement with Enskog theory for short times and with hydrodynamic mode-coupling theory for longer times. For aqueous colloidal suspensions, the Enskog contribution to the rotational friction is larger than the hydrodynamic one when the colloidal radius drops below 35 nm.
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收藏
页码：S3393 / S3399
页数：7
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