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Coexistence of two colloidal crystals at the nematic-liquid-crystal-air interface
A B Nych ; U M Ognysta ; V M Pergamenshchik ; B I Lev ; V G Nazarenko ; I Musevic ; M Skarabot ; O D Lavrentovich ;
Date:	2 Feb 2007
Journal:	Phys Rev Lett, 98 (5), 057801
Abstract:	Glycerol droplets at a nematic-liquid-crystal-air interface form two different lattices--hexagonal and dense quasihexagonal--which are separated by the energy barrier and can coexist. Director distortions around each droplet form an elastic dipole. The first order transition between the two lattices is driven by a reduction of the dipole-dipole repulsion through reorientation of these dipoles. The elastic-capillary attraction is essential for the both lattices. The effect has a many-body origin.
Source:	PubMed, pmid17358900
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