Anchoring behavior, orientational order, and reorientation dynamics of nematic liquid crystal droplets dispersed in cross-linked polymer networks

被引：19

作者：

Roussel, F ^{[1
]}

Fung, BM

机构：

[1] Univ Littoral Cote dOpale, MREID, CNRS, Equipe UMR 8024,Lab Thermophys Mat Condensee, F-59140 Dunkerque, France

[2] Univ Oklahoma, Dept Chem, Norman, OK 73019 USA

来源：

PHYSICAL REVIEW E | 2003年 / 67卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.67.041709

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 orientational ordering and the electro-optical properties of nematic liquid crystal (LC) droplets confined to cross-linked polymer networks are investigated as a function of the anchoring conditions at the polymer-liquid crystal interface. Normal alignment (homeotropic) or parallel alignment (planar) inside LC droplets was controlled by using acrylate polymers with appropriate side chains. Drastic changes in the reorientation dynamics of the confined nematic liquid crystal phase are observed, as well as in the orientational ordering of the phase-separated LC which was investigated by C-13-NMR (nuclear magnetic resonance) spectroscopy. The cross-link density of the polymer network also affects the orientational ordering and the electro-optical properties of the confined LC phase. Faster switching times and higher-order parameters were found for samples with LC droplets exhibiting planar anchoring.

引用

页数：4

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