@article {1566, title = {Nematic-fluid structure in wall-field geometry. II. The direct correlation function}, journal = {Journal of Chemical Physics}, volume = {125}, number = {3}, year = {2006}, note = {ISI Document Delivery No.: 065QNTimes Cited: 4Cited Reference Count: 20Sokolovska, T. G. Sokolovskii, R. O. Patey, G. N.}, month = {Jul}, pages = {11}, type = {Article}, abstract = {An explicit expression for the wall-nematic direct correlation function (DCF) is obtained for any orientation of the wall with respect to an external orienting field. It is found that inside the surface of the wall, the DCF rapidly tends to a function of the nematogen orientation and depends only on parameters of the bulk fluid. We suggest that the wall-nematic DCF can be used as an ansatz for the colloid-nematic DCF in dilute nematic colloids. The reliability of this ansatz is investigated at different field strengths in both isotropic and nematic regions. Our calculations for spherical colloidal particles show that this approximation is valid for colloidal particles that are large, but well within the physically realistic size range. The ansatz could also be applied to nonspherical colloidal particles.}, keywords = {INTEGRAL-EQUATION, PHASE}, isbn = {0021-9606}, url = {://000239174500045}, author = {Sokolovska, T. G. and Sokolovskii, R. O. and Patey, G. N.} } @article {1224, title = {Solvent phase behavior and the interaction of uniform and patterned solutes}, journal = {Journal of Chemical Physics}, volume = {123}, number = {19}, year = {2005}, note = {ISI Document Delivery No.: 985CHTimes Cited: 2Cited Reference Count: 42}, month = {Nov}, pages = {10}, type = {Article}, abstract = {Isotropic and anisotropic hypernetted-chain (HNC) integral equation theories are used to obtain the interaction of solutes both near and far from the solvent liquid-vapor coexistence. Spherically symmetrical and chemically patterned (patched) solutes are considered, and the influences of particle and patch sizes are investigated. Solvophilic and solvophobic solutes (or patches) are examined. Near coexistence, in the solvophobic case drying like behavior occurs for solutes (patches) of sufficient size. This gives rise to relatively long ranged attractive forces that are strongly orientation dependent for the patched solute particles. We also report grand canonical Monte Carlo results for a pair of spherically symmetric solutes. This demonstrates that the anisotropic HNC theory gives qualitatively correct solvent structure in the vicinity of the solutes. Comparison with previous simulations also shows that the solute-solute potentials of mean force given by the anisotropic theory are more accurate (particularly at small separations) than those obtained using the isotropic method. (c) 2005 American Institute of Physics.}, keywords = {BINARY-FLUID MIXTURE, BRIDGE DIAGRAM SERIES, HYDROPHOBIC SURFACES, INTEGRAL-EQUATION, LENNARD-JONES FLUIDS, MACROPARTICLES, MEAN FORCE, RANGE, SPHERICALLY INHOMOGENEOUS FLUIDS, TRANSITION}, isbn = {0021-9606}, url = {://000233353200029}, author = {Overduin, S. D. and Patey, G. N.} }