PRETRANSITIONAL NEMATIC SURFACE ORDER IN THE ISOTROPIC-PHASE OF PHENYLCYCLOHEXANES

被引：42

作者：

IMMERSCHITT, S

KOCH, T

STILLE, W

STROBL, G

机构：

[1] Fakultät für Physik, Universität Freiburg

来源：

JOURNAL OF CHEMICAL PHYSICS | 1992年 / 96卷 / 08期

关键词：

D O I：

10.1063/1.462616

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pretransitional order at the free surface of the isotropic phases of two phenylcyclohexances (PCH5 and PCH7) was studied by reflection ellipsometry under variation of the angle of incidence. Data analysis shows a logarithmic divergence of the boundary layer thickness when the temperature approaches the isotropic-nematic transition point, indicating complete wetting behavior. The data are well represented by fits to a model based on a Landau-de Gennes approach, yielding order parameter profiles of the layer.

引用

页码：6249 / 6256

页数：8

共 27 条

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