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

J.T. Padding; A. Wysocki; H. Löwen; A.A. Louis

doi:10.1088/0953-8984/17/45/027

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

J.T. Padding, A. Wysocki, H. Löwen, A.A. Louis

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Abstract

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 auto-correlation 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. © 2005 IOP Publishing Ltd.

Original language	English
Pages (from-to)	S3393-S3399
Number of pages	7
Journal	Journal of Physics : Condensed Matter
Volume	17
Issue number	45
DOIs	https://doi.org/10.1088/0953-8984/17/45/027
Publication status	Published - 2005

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

abstract = "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 auto-correlation 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. {\textcopyright} 2005 IOP Publishing Ltd.",

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AU - Wysocki, A.

AU - Löwen, H.

AU - Louis, A.A.

PY - 2005

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AB - 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 auto-correlation 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. © 2005 IOP Publishing Ltd.

U2 - 10.1088/0953-8984/17/45/027

DO - 10.1088/0953-8984/17/45/027

M3 - Article

SN - 0953-8984

VL - 17

SP - S3393-S3399

JO - Journal of Physics : Condensed Matter

JF - Journal of Physics : Condensed Matter

IS - 45

ER -

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

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