Analysis of ring patterns in SmC* liquid crystals

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Wigham, E.J. (2005) Analysis of ring patterns in SmC* liquid crystals. Molecular Crystals and Liquid Crystals, 436. pp. 955-969. (http://journalsonline.tandf.co.uk/openurl.asp?genr...)

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Abstract

It has been seen experimentally that ring patterns occur when planar aligned samples of SmC* are subjected to a rotating in-plane electric field [4712]. We shall model this problem mathematically by approximating the ring patterns and considering a circular domain embedded within a rectangular sample. The ring patterns will be modelled by travelling wave solutions. We shall then investigate the stability of these travelling wave solutions via a linearised perturbation, a Hardy-type inequality and an isoperimetric minimisation problem. This allows a calculation of the lowest eigenvalue which we use to determine the response time of perturbations to the travelling wave solution.

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