Director distortion in a nematic wetting layer
Braun, F.N., Sluckin, T.J. and Velasco, E. (1996) Director distortion in a nematic wetting layer. Jornal of Physics: Condensed Matter, 8, (16), 2741-2754. (doi:10.1088/0953-8984/8/16/003).
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Nematic liquid-crystal wetting at a solid interface presents particularly interesting features when the nematic director orientation at the solid interface is antagonistic to that favoured by the emerging nematic - isotropic interface. We have used the Landau - de Gennes theory of an inhomogeneous liquid crystal to make a quantitative study of this phenomenon, for the case when the solid surface favours homeotropic anchoring but the nematic - isotropic surface favours planar anchoring. By generalizing the theory of Sheng to allow spatial variation of the director, we find a richer surface phase diagram exhibiting a prewetting line or boundary transition shifted from that discussed by Sheng, as well as a transition between two nematic wetting phases, at which the wetting layer director profile changes from a homeotropic to a distorted texture.
|Subjects:||Q Science > QD Chemistry
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > School of Mathematics > Applied Mathematics
|Date Deposited:||21 Dec 2006|
|Last Modified:||01 Jun 2011 06:34|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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