Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-10-24
J. Chem. Phys. 122, 034901 (2005)
Physics
Condensed Matter
Statistical Mechanics
37 pages, 7 figures, 1 table
Scientific paper
10.1063/1.1831275
We study the polydisperse Baxter model of sticky hard spheres (SHS) in the modified Mean Spherical Approximation (mMSA). This closure is known to be the zero-order approximation (C0) of the Percus-Yevick (PY) closure in a density expansion. The simplicity of the closure allows a full analytical study of the model. In particular we study stability boundaries, the percolation threshold, and the gas-liquid coexistence curves. Various possible sub-cases of the model are treated in details. Although the detailed behavior depends upon the particularly chosen case, we find that, in general, polydispersity inhibits instabilities, increases the extent of the non percolating phase, and diminishes the size of the gas-liquid coexistence region. We also consider the first-order improvement of the mMSA (C0) closure (C1) and compare the percolation and gas-liquid boundaries for the one-component system with recent Monte Carlo simulations. Our results provide a qualitative understanding of the effect of polydispersity on SHS models and are expected to shed new light on the applicability of SHS models for colloidal mixtures.
Fantoni Riccardo
Gazzillo Domenico
Giacometti Achille
No associations
LandOfFree
Stability boundaries, percolation threshold, and two phase coexistence for polydisperse fluids of adhesive colloidal particles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stability boundaries, percolation threshold, and two phase coexistence for polydisperse fluids of adhesive colloidal particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability boundaries, percolation threshold, and two phase coexistence for polydisperse fluids of adhesive colloidal particles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-477161