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    56. Wetting, drying, and layering of colloid-polymer mixtures at porous interfaces
    P. P. F. Wessels, M. Schmidt, and H. Löwen, Phys. Rev. Lett. 94, 078303 (2005).
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    Extract. The influence of interface porosity on wetting of colloid-polymer mixtures is studied at the surface of a quenched hard sphere matrix. The onset of wetting, as signaled by the first discontinuous layering transition, can be efficiently controlled by tailoring the porosity. The penetrability of the interface induces complete drying into the matrix. [more]



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    Fluids in random media

    The density functional theory for quenched-annealed mixtures [24] relates the quenched components to a random porous medium and the annealed components model to an adsorbate fluid (mixture). See [46] for the explicit relation to the the replica trick. Colloid-polymer mixtures were studied in bulk random matrices [32], exhibiting (gas-liquid) interfaces [41], and wetting properties at porous substrates [56]. Rods were immersed in quenched sphere matrices [54], and spheres were immersed in random fibre networks [39]. Freezing is hindered in the presence of disorder [38]. See [33] for the related non-equilibrium process of random sequential adsorption.

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MS, 20 Apr 2009.