Flow and anchoring effects on nematic fluctuations in confined geometry

被引：6

作者：

Copic, Martin ^{[1
,2
]}

Vilfan, Mojca ^{[2
]}

Mertelj, Alenka ^{[2
]}

机构：

[1] Univ Ljubljana, Fac Math & Phys, SI-1000 Ljubljana, Slovenia

[2] Joseph Stefan Inst, SI-1000 Ljubljana, Slovenia

来源：

LIQUID CRYSTALS | 2013年 / 40卷 / 12期

关键词：

liquid crystals; nematic fluctuations; light scattering; surface interactions; LIQUID-CRYSTAL; CONSTITUTIVE EQUATIONS; ORIENTATIONAL DYNAMICS; ANISOTROPIC FLUIDS; LIGHT-SCATTERING; SURFACE; VISCOSITY; INTERFACE; FILMS;

D O I：

10.1080/02678292.2013.819129

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Light scattering observation of nematic director fluctuations in confined geometries can be used to obtain interaction parameters of liquid crystals with surfaces. We present the basics of the method and some examples of the results in planar and cylindrical geometries. These results were obtained after neglecting the coupling of the director motion to flow. We give analytical and numerical results of flow effects on director fluctuations in a slab. The backflow contribution to the effective viscosity is strongly suppressed so that the results for the anchoring energy remain valid. Modal dispersion relations show an interesting behaviour of avoiding crossings.

引用

页码：1646 / 1654

页数：9

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