Abstract
The phase coexistence of colloidal suspensions is studied by Monte Carlo Replica Exchange (REMC) simulations using an attractive triangle potential model of short range (1.15σ ≤ λ ≤ 1.4) in a wide temperature range. Typical liquid-vapor coexistences are found at temperatures close to the critical one, while for lower temperatures the liquid-vapor metastability is broken in favor of the vapor-solid coexistence. Structural properties are accessed through the radial distribution function and the global order parameter. The formation of a solid phase with structure belonging to the close-packed family is shown. The coexistence curves are plotted in reduced coordinates and compared with those experimentally obtained for protein suspensions (lysozyme aqueous suspensions with additives). A good qualitative agreement between experimental data and simulation results is found.
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