Dynamics of the nematic phase of a bent-core liquid crystal

被引：84
|
作者：
Stojadinovic, S [1 ]
Adorjan, A
Sprunt, S
Sawade, H
Jakli, A
机构：
[1] Kent State Univ, Dept Phys, Kent, OH 44242 USA
[2] Tech Univ, Stranski Lab, D-10623 Berlin, Germany
[3] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA
来源：
PHYSICAL REVIEW E | 2002年 / 66卷 / 06期
关键词：
D O I：
10.1103/PhysRevE.66.060701
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The dielectric fluctuations in the uniaxial nematic phase of a bent-core liquid crystal have been studied by dynamic light scattering. Polarization selection of the scattering cross-section reveals one mode due to ordinary director fluctuations and, in the lower part of the nematic phase, a second mode attributable to fluctuations of the biaxial order parameter. The director fluctuations are similar to100 times slower than observed in typical nematics based on straight-core molecules, suggesting that the bent core nematogenic units may be microscopic smectic domains ("cybotactic" clusters).
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页数：4
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