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.
引用
收藏
页码：1838 / 1841
页数：4
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