Gravity-induced liquid crystal phase transitions of colloidal platelets

Reference : Gravity-induced liquid crystal phase transitions of colloidal platelets


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/7743

Title :	Gravity-induced liquid crystal phase transitions of colloidal platelets
Language :	English
Author, co-author :	van der Beek, D. [Van’t Hoff Laboratory for Physical and Colloid Chemistry, Utrecht University, Netherlands]
	Schilling, Tanja [Institut für Physik, Johannes Gutenberg Universität, 55099 Mainz, Germany]
	Lekkerkerker, H. N. W. [Van’t Hoff Laboratory for Physical and Colloid Chemistry, Utrecht University, Netherlands]
Publication date :	2004
Journal title :	Journal of Chemical Physics
Publisher :	AMER INST PHYSICS, CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Volume :	121
Issue/season :	11
Pages :	5423-5426
Peer reviewed :	Yes (verified by ORBi^lu)
Audience :	International
ISSN :	0021-9606
e-ISSN :	1089-7690
Abstract :	[en] 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.
Permalink :	http://hdl.handle.net/10993/7743
DOI :	10.1063/1.1783231

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