Phys. Rev. E 50, 2109 - 2114 (1994)Dielectric study of the electroclinic effect in the smectic-A phase |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1984: |
Yu. P. Kalmykov
Institute of Radio Engineering & Electronics of the Russian Academy of Sciences, Vvedenskii Square 1, Fryazino, Moscow Region 141120, Russia
J. K. Vij and Huan Xu
Department of Microelectronics & Electrical Engineering, Trinity College, University of Dublin, Dublin 2, Ireland
A. Rappaport and M. D. Wand
Displaytech Inc., 220 Central Avenue, Suite C, Boulder, Colorado 80301
Received 8 November 1993
The dielectric properties of a smectic-A liquid crystal in the presence of a dc bias field are studied in the frequency range 100 Hz–1 MHz. It is shown that near the smectic-A–smectic-C* phase transition the relaxation frequency and dielectric strength of the soft mode have nonlinear bias field dependencies resulting from an electroclinic coupling between the molecular tilt and the polarization. A simple mean field theory is proposed to explain the experimental results.
©1994 The American Physical Society
URL: http://link.aps.org/abstract/PRE/v50/p2109
DOI: 10.1103/PhysRevE.50.2109
PACS: 42.70.Df, 61.30.Cz, 61.30.Gd, 77.84.Nh
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