Dynamical behavior of a nematic lyotropic liquid crystal in flat confined samples

被引：6

作者：

Bechtold, IH ^{[1
]}

Bonvent, JJ ^{[1
]}

Oliveira, EA ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW E | 2002年 / 65卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.65.011704

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：

We investigate the dynamical behavior of the director in the surface layer of lyotropic nematic liquid crystals in an external magnetic field. The characteristic time of the orientation process is obtained from optical measurements for samples of different thickness (200, 50, and 10 mum). The boundary surfaces are glass plates coated with rubbed polymer[polymethylmethcrylate (PMMA)], to introduce an easy axis. Drastic changes in the dynamical behavior are observed when the thickness is decreased and the experimental results indicate a uniaxial to biaxial transition due to the confinement of the nematic sample.

引用

页数：6

共 9 条

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