Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 17, Issue 45, Pages S3393-S3399Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/17/45/027
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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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