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Journal ArticleDOI

Ornstein–Zernike Relation and Percus–Yevick Approximation for Fluid Mixtures

R. J. Baxter
- 01 May 1970 - 
- Vol. 52, Iss: 9, pp 4559-4562
TLDR
In this paper, a transformation of the Ornstein-Zernike relation for fluid mixtures is derived which involves the direct and indirect correlation functions only over the ranges within which the former are nonzero.
Abstract
A transformation of the Ornstein–Zernike relation for fluid mixtures is derived which involves the direct and indirect correlation functions only over the ranges within which the former are nonzero. Also, two closed expressions for the compressibility pressure in the Percus–Yevick (PY) approximation for mixtures are presented. The analytic solution of the PY approximation for mixtures of hard spheres follows immediately, and it is expected that the results should be of use in numerical calculations for systems with short‐range forces, where the direct correlation functions normally tend rapidly to zero with increasing particle separation.

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Citations
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Journal ArticleDOI

Depletion and Structural Forces between Two Macrosurfaces Immersed in a Bidisperse Colloidal Suspension

TL;DR: NikNikolov et al. as discussed by the authors performed a statistical mechanics study of a model system that consists of a binary hard-sphere mixture with a size ratio of 1 : 10 between two planar surfaces.
Journal ArticleDOI

From the depletion attraction to the bridging attraction: the effect of solvent molecules on the effective colloidal interactions.

TL;DR: This work uses Baxter's multi-component method for sticky hard sphere systems with the Percus-Yevick approximation to study the bridging attraction and its consequence to phase diagrams, which are controlled by the concentration of small particles and their interaction with large particles.
Journal ArticleDOI

Spatial correlations and solvation interaction in a two‐component mixture of adhesive fluids

TL;DR: In this article, the phase behavior and the spatial correlations in a two-component mixture of adhesive fluids are studied on the basis of the solution to the Percus-Yevick/Ornstein-Zernike equation.
Journal ArticleDOI

Continuum percolation and pair-connectedness function in binary mixtures of strongly interacting particles

TL;DR: In this article, the percolation and aggregation in binary mixtures of strongly interacting particles are determined using the Ornstein-Zernike integral equation in the Percus-Yevick (PY) integral equation.
Journal ArticleDOI

Mean spherical model for the structure of Lennard‐Jones fluids

TL;DR: The mean spherical model (MSM) has been solved for the 12/6 fluid in four different states which correspond to those of neon, argon, krypton, and xenon at relatively high densities.
References
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Journal ArticleDOI

Thermodynamic Properties of Mixtures of Hard Spheres

TL;DR: In this article, the authors investigated the thermodynamic properties of a binary mixture of hard spheres by using the recently obtained exact solution of the generalized equations of Percus and Yevick for the radial distribution functions of such a mixture.
Journal ArticleDOI

Approximation Methods in Classical Statistical Mechanics

TL;DR: In this paper, the pair distribution function for a classical fluid in thermal equilibrium is found to be more closely approximated by the Percus and Yevick (Phys. Rev., 110: 1(1958)) approximation than by the Bogoliubov-Born-Green- Kirkwood-Yvon (B.G.K.H.) approximation or the hypernetted chain approximation.
Journal ArticleDOI

Ornstein-Zernike relation for a disordered fluid

TL;DR: In this paper, it was shown that if the direct correlation function c(r) vanishes beyond a range R, then a third function Q(r), which is related to c and h (r) by equations that involve the functions only over the range (O,R), can be introduced.
Journal ArticleDOI

A New Approach to the Theory of Classical Fluids. I

TL;DR: In this article, an exact integral equation for the pair distribution function is found for the Helmholtz free energy and the integral equation can be derived also by means of a variational principle from the expression for the free energy.
Journal ArticleDOI

Percus‐Yevick Equation Applied to a Lennard‐Jones Fluid

TL;DR: An efficient method of solving the Percus-Yevick and related equations is described in this paper, where the method is applied to a Lennard-Jones fluid, and the solutions obtained are discussed.