Rescaled mean spherical approximation for concentrated charge-stabilized colloids

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39036

Title:	Rescaled mean spherical approximation for concentrated charge-stabilized colloids
Authors:	Lai,SK;Wang,GF;Peng,WP;Wang,JL
Contributors:	物理研究所
Keywords:	IONIC MICELLAR SOLUTIONS;LIQUID SOLUTIONS;PHASE-DIAGRAM
Date:	1999
Issue Date:	2010-07-08 14:02:52 (UTC+8)
Publisher:	中央大學
Abstract:	The rescaled mean spherical approximation (MSA) [J.P. Hansen, J.B. Hayter, Mol. Phys. 46 (1982) 651] which was evaluated to be quite successful for studying the structures of charged colloidal dispersions at low volume fractions was revisited. Contrary to the common understanding in atomic liquids that the Ornstein-Zernike equation supplemented by the MSA closure becomes increasingly accurate at a high volume fraction (which implies the unnecessity of rescaling), it is found here that, even at high volume fractions, the calculated charged colloidal pair correlation function displays a negative value near the minimum contact distance. Both the numerical and analytical methods are applied to remedy this unphysical feature. We confirm that the analytical rescaling scheme proposed by Hansen and Hayter is equally applicable to a concentrated suspension of charge-stabilized colloids. (C) 1999 Elsevier Science B.V. All rights reserved.
Relation:	PHYSICA B-CONDENSED MATTER
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

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