PMID: 11308664Apr 20, 2001Paper

Surface depinning of smectic-A edge dislocations

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
M SlavinecT J Sluckin

Abstract

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.

References

Aug 15, 1988·Physical Review A: General Physics·S R Renn, T C Lubensky
Oct 1, 1994·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·S Kralj, T J Sluckin
May 3, 1993·Physical Review Letters·M Cagnon, G Durand

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Citations

Mar 2, 2017·The European Physical Journal. E, Soft Matter·Elena S Pikina, Boris I Ostrovskii
Dec 17, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M AmbrozicD Svensek
Aug 7, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Paolo BiscariEugene M Terentjev
Mar 7, 2015·The European Physical Journal. E, Soft Matter·Elena S PikinaWim H de Jeu
Oct 4, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Zdravko KutnjakSlobodan Zumer

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