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Surface depinning of smectic-A dislocations

Slavinec, M., Kralj, S., Zumer, S. and Sluckin, T.J. (2001) Surface depinning of smectic-A dislocations Physical Review E, 63, (3), 031705-[6pp]. (doi:10.1103/PhysRevE.63.031705).

Record type: Article


Using a Landau–de Gennes approach, we model the formation of an edge dislocation in a smectic-A cell initially in the bookshelf structure. The driving force is the mismatch between the layer thickness in a bulk smectic-A liquid crystal and that imposed by confining plates. The core structure of the dislocation is calculated taking into account spatial variations of the smectic translational order parameter. We numerically determine the critical condition for the surface-driven formation and depinning of the dislocation. By exploiting this phenomenon, we show how the value of the positional anchoring strength at the surface can be determined.

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Published date: 2001


Local EPrints ID: 29584
ISSN: 1539-3755
PURE UUID: 4a945f51-accd-45b3-b30a-12c3bda565d6
ORCID for T.J. Sluckin: ORCID iD

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Date deposited: 12 May 2006
Last modified: 17 Jul 2017 15:57

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Author: M. Slavinec
Author: S. Kralj
Author: S. Zumer
Author: T.J. Sluckin ORCID iD

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