Polarity-dependent dielectric torque in nematic liquid crystals

被引：6
|
作者：
Gu, Mingxia [1 ]
Shiyanovskii, Sergij V. [1 ]
Lavrentovich, Oleg D. [1 ]
机构：
[1] Kent State Univ, Inst Liquid Crystal, Chem Phys Interdisciplinary Program, Kent, OH 44242 USA
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 23期
关键词：
D O I：
10.1103/PhysRevLett.100.237801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The dielectric dispersion in the uniaxial nematic liquid crystals affects the switching dynamics of the director, as the dielectric torque is determined by not only the present values of the electric field and director but also by their past values. We demonstrate that this "dielectric memory" leads to an unusual contribution to the dielectric torque that is linear in the present field and thus polarity sensitive. This torque can be used to accelerate the "switch-off" phase of director dynamics.
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页数：4
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