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Capillary evaporation in colloid-polymer mixtures
selectively confined to a planar slit M. Schmidt, A. Fortini, and M. Dijkstra, J. Phys.: Condens. Matt. 16, S4159 (2004). Locate in [bare] [illustrated] list. Get [full paper] as pdf. Extract. We investigate the hard sphere colloids and non-adsorbing ideal polymers under selective confinement of the colloids to a planar slab geometry. This is a model for confinement by either two parallel walls with a semi-permeable polymer coating or through the use of laser tweezers. We find that such a pore favours the gas over the liquid phase and induces capillary evaporation. [more]  Read the [full paper] as pdf. |
Fluid interfaces
Colloid-polymer mixtures display fluid-fluid interfaces [21] [44], relevant for laser-induced condensation [35], capillary condensation [43] and evaporation [48], immersion in porous media [41], the appearance of the floating liquid phase [52], the competition between sedimentation and phase coexistence [51], tension at a substrate [45], the experimental observation of thermal capillary waves [47], and the contact angle of the liquid-gas interface and a wall [50]. In colloidal rod-sphere mixtures fluid-fluid interfaces were investigated with theory [30] and simulation [42]. Hard sphere fluids were considered at surfaces of porous media [37], in random fiber networks [39], and in one dimensional cases [46].[more]