Gravity-induced liquid crystal phase transitions of colloidal platelets.

6533b85ffe1ef96bd12c12fa

RESEARCH PRODUCT

Gravity-induced liquid crystal phase transitions of colloidal platelets.

David Van Der Beek Henk N. W. Lekkerkerker Tanja Schilling

subject

Phase transition Gravity (chemistry)Materials science Monte Carlo method : Physics [G04] [Physical chemical mathematical & earth Sciences]General Physics and Astronomy Thermodynamics Condensed Matter::Soft Condensed Matter Crystallography Colloid : Physique [G04] [Physique chimie mathématiques & sciences de la terre]Liquid crystal SPHERES Physical and Theoretical Chemistry Columnar phase Suspension (vehicle)

description

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.

year	journal	country	edition	language
2004-01-01	The Journal of chemical physics

10.1063/1.1783231 https://pubmed.ncbi.nlm.nih.gov/15352836

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