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See detailGravity-induced liquid crystal phase transitions of colloidal platelets
van der Beek, D.; Schilling, Tanja UL; Lekkerkerker, H. N. W.

in Journal of Chemical Physics (2004), 121(11), 5423-5426

he influence of gravity on a suspension of sterically stabilized colloidal gibbsite platelets is studied. An initially isotropic-nematic biphasic sample of such a suspension develops a columnar phase on ... [more ▼]

he influence of gravity on a suspension of sterically stabilized colloidal gibbsite platelets is studied. An initially isotropic-nematic biphasic sample of such a suspension develops a columnar phase on the bottom on prolonged standing. This phenomenon is described using a simple osmotic compression model. We performed Monte Carlo simulations of cut spheres with aspect ratio L/D = 1/15 and took data from the literature to supply the equations of state required for the model. We find that the model describes the observed three-phase equilibrium quite well. [less ▲]

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