ANCHORING AND ORIENTATIONAL WETTING TRANSITIONS OF CONFINED LIQUID-CRYSTALS

被引：137

作者：

CRAWFORD, GP ^{[1
]}

ONDRISCRAWFORD, R ^{[1
]}

ZUMER, S ^{[1
]}

DOANE, JW ^{[1
]}

机构：

[1] UNIV LJUBLJANA,DEPT PHYS,YU-61000 LJUBLJANA,SLOVENIA

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.70.1838

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Deuterium magnetic resonance of cylindrically confined liquid crystals reveals a structural transition driven by a homeotropic-to-planar anchoring transition in the nematic phase and an orientational wetting (quasicomplete-to-partial) transition in the isotropic phase as the molecular length of the surface coupling agent is decreased. A simple phenomenological description reveals a weak positive surface order parameter in the homeotropic case and a negative one in the planar case. The absence of a symmetry breaking transition in the planar case is attributed to weak interfacial coupling.

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页码：1838 / 1841

页数：4

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