Publication Title

Physical Review Letters

Publication Date

8-19-2005

Document Type

Article

DOI

10.1103/PhysRevLett.95.087801

Disciplines

Physics

Abstract

We demonstrate that the finite rate of dielectric relaxation in liquid crystals which has been ignored previously causes profound effects in the fast dielectric reorientation of the director. We propose a theory of dielectric response in which the electric displacement depends not only on the present (as in the standard theory) but also on the past values of electric field and director. We design an experiment with a dual-frequency nematic in which the standard "instantaneous" model and our model predict effects of opposite signs; the experimental data support the latter model.

Comments

Copyright 2005 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevLett.95.087801


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