Publication Title

Physical Review Letters

Publication Date

6-28-2010

Document Type

Article

DOI

10.1103/PhysRevLett.105.017801

Keywords

wall interface, director, film

Disciplines

Physics

Abstract

The surface alignment of lyotropic chromonic liquid crystals can not only be planar (tangential) but also homeotropic, with self-assembled aggregates perpendicular to the substrate, as demonstrated by mapping optical retardation and by three-dimensional imaging of the director field. With time, the homeotropic nematic undergoes a transition into a tangential state. The anchoring transition is discontinuous and can be described by a double-well anchoring potential with two minima corresponding to tangential and homeotropic orientation.

Comments

Copyright 2010 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevLett.105.017801


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