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  • Title: Bulk and wetting phenomena in a colloidal mixture of hard spheres and platelets.
    Author: Harnau L, Dietrich S.
    Journal: Phys Rev E Stat Nonlin Soft Matter Phys; 2005 Jan; 71(1 Pt 1):011504. PubMed ID: 15697605.
    Abstract:
    Density functional theory is used to study binary colloidal fluids consisting of hard spheres and thin platelets in their bulk and near a planar hard wall. This system exhibits liquid-liquid coexistence of a phase that is rich in spheres (poor in platelets) and a phase that is poor in spheres (rich in platelets). For the mixture near a planar hard wall, we find that the phase rich in spheres wets the wall completely upon approaching the liquid demixing binodal from the sphere-poor phase, provided the concentration of the platelets is smaller than a threshold value which marks a first-order wetting transition at coexistence. No layering transitions are found, in contrast to recent studies on binary mixtures of spheres and nonadsorbing polymers or thin hard rods.
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