CURVATURE-INDUCED CONFIGURATION TRANSITION IN CONFINED NEMATIC LIQUID-CRYSTALS

被引：99

作者：

ONDRISCRAWFORD, RJ

CRAWFORD, GP

ZUMER, S

DOANE, JW

机构：

[1] KENT STATE UNIV, DEPT PHYS, KENT, OH 44242 USA

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

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.70.194

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Stable nematic director fields of liquid crystals confined to cylindrical cavities which enforce homogeneous concentric anchoring depend on the competition between azimuthal and polar molecular anchoring strengths and the surface elastic constant K24. Deuterium nuclear-magnetic-resonance line shapes of such systems reveal a structural transition from an escaped-twisted to a newly discovered planar-bipolar configuration as the curvature is varied. This observation allows for the first determination of the polar and azimuthal anchoring energies and K24 by a single experimental method.

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页码：194 / 197

页数：4

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