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Entropic wetting of a colloidal rod-sphere mixture R. Roth, J. M. Brader, and M. Schmidt, Europhys. Lett. 63, 549 (2003). Locate in [bare] [illustrated] list. Get [full paper] as pdf. Extract. We investigate the behavior of hard spheres and rod-like particles near a planar hard wall. For small size ratios of rod length and sphere diameter we find that the colloidal liquid phase wets the wall completely. Using an effective one-component description based on the pairwise depletion potential a finite sequence of layering phase transitions is found. [more]  Read the [full paper] as pdf. |
Rod-sphere mixtures
The DFT of [19] was extended to treat rod-rod interactions [30] [49], and used for free fluid interfaces [30] and wetting at a hard wall [40]. Simulations [42] confirmed unusual interfacial rod ordering. See [25] for the demixing phase behavior of the system upon adding polymers.[more]