
Proceedings Paper
Effects of dielectric relaxation in electrooptics of nematic cellsFormat | Member Price | Non-Member Price |
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Paper Abstract
Recent experimental and theoretical results that link the phenomenon of dielectric relaxation in nematic liquid
crystals (NLCs) to their dynamics and fast electro-optical switching are presented. Namely, we illustrate that the
dielectric torque acting on the uniaxial nematic liquid crystal depends not only on the present value of the field and
the present orientation of the director, but also on the prehistory of these two parameters. The resulting "dielectric
memory" effect leads to a spectacular but counter-intuitive effect: director relaxation during the "switch-off" stage
can be accelerated if instead of the abrupt vertical back edge, one uses a voltage pulse with a non-instantaneously
vanishing back edge. The acceleration effect can be enhanced with a short high voltage pulse at the end of the
"switch on" process.
Paper Details
Date Published: 3 February 2009
PDF: 10 pages
Proc. SPIE 7232, Emerging Liquid Crystal Technologies IV, 723206 (3 February 2009); doi: 10.1117/12.811035
Published in SPIE Proceedings Vol. 7232:
Emerging Liquid Crystal Technologies IV
Liang-Chy Chien; Ming Hsien Wu, Editor(s)
PDF: 10 pages
Proc. SPIE 7232, Emerging Liquid Crystal Technologies IV, 723206 (3 February 2009); doi: 10.1117/12.811035
Show Author Affiliations
Oleg D. Lavrentovich, Kent State Univ. (United States)
Hugh A. Wonderly, Kent State Univ. (United States)
Hugh A. Wonderly, Kent State Univ. (United States)
Mingxia Gu, Kent State Univ. (United States)
Sergij V. Shiyanovskii, Kent State Univ. (United States)
Sergij V. Shiyanovskii, Kent State Univ. (United States)
Published in SPIE Proceedings Vol. 7232:
Emerging Liquid Crystal Technologies IV
Liang-Chy Chien; Ming Hsien Wu, Editor(s)
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