%0 Book Section %1 statphys23_0604 %A Reich, H. %A Schmidt, M. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K colloids crystals density functional fundamental liquid measure statphys23 theory topic-7 wetting %T Wetting and capillary phase behaviour of colloidal platelet dispersions %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=604 %X We consider a model colloidal dispersion of hard platelets with circular shapes, vanishing thickness and continuous position and orientation degrees of freedom. Using density functional theory we investigate the wetting behaviour of the nematic phase at a hard wall upon approaching bulk isotropic-nematic coexistence, the influence of an external magnetic field on the bulk isotropic-nematic phase transition and capillary phase transitions of the system when confined between parallel hard walls. We find that a single wall is wet completely by the nematic phase, that isotropic-nematic coexistence vanishes above a critical field strength and that two parallel walls induce capillary nematization. Some of our findings are compared to literature results from extensive Monte Carlo simulations and from experiments with dispersions of sterically stabilized Gibbsite platelets adsorbed against a glass wall.

@incollection{statphys23_0604, abstract = {We consider a model colloidal dispersion of hard platelets with circular shapes, vanishing thickness and continuous position and orientation degrees of freedom. Using density functional theory we investigate the wetting behaviour of the nematic phase at a hard wall upon approaching bulk isotropic-nematic coexistence, the influence of an external magnetic field on the bulk isotropic-nematic phase transition and capillary phase transitions of the system when confined between parallel hard walls. We find that a single wall is wet completely by the nematic phase, that isotropic-nematic coexistence vanishes above a critical field strength and that two parallel walls induce capillary nematization. Some of our findings are compared to literature results from extensive Monte Carlo simulations and from experiments with dispersions of sterically stabilized Gibbsite platelets adsorbed against a glass wall.}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Reich, H. and Schmidt, M.}, biburl = {https://www.bibsonomy.org/bibtex/29c4b7141b05fe705fb5f7377c5dcc915/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {8cbe2367eabb81dfb98aab5b529782bf}, intrahash = {9c4b7141b05fe705fb5f7377c5dcc915}, keywords = {colloids crystals density functional fundamental liquid measure statphys23 theory topic-7 wetting}, month = {9-13 July}, timestamp = {2007-06-20T10:16:24.000+0200}, title = {Wetting and capillary phase behaviour of colloidal platelet dispersions}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=604}, year = 2007 }