Effect of decoupled azimuthal and zenithal anchoring on smectic-C chevron structures

Diaz, A., McKay, G. and Mottram, N. J. (2007) Effect of decoupled azimuthal and zenithal anchoring on smectic-C chevron structures. Physical Review E, 76(4), 041705. (doi: 10.1103/physreve.76.041705)

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We present a study of the effect of decoupled azimuthal and zenithal weak anchoring on the transition between C1 and C2 chevron structures in smectic-C liquid crystals. We consider temperatures below the SmA-SmC transition and assume that the value of the smectic cone angle can be regarded as constant through the cell. By standard Euler-Lagrange minimization of the total energy we obtain a simple analytical expression for the equilibrium director twist angle in the C1 and C2 chevron states. Using this analytical form, we are able to compare the total energies of the C1 and C2 chevrons, and determine the globally stable chevron profile. We show that the C2 state is preferred when the azimuthal anchoring strength is relatively large, while C1 chevrons will dominate for strong zenithal anchoring.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Mottram, Professor Nigel
Authors: Diaz, A., McKay, G., and Mottram, N. J.
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Physical Review E
Publisher:American Physical Society
ISSN (Online):2470-0053
Published Online:24 October 2007

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