Structural characterization of surface hexatic behavior in free-standing 4O.8 liquid-crystal films

被引：4

作者：

Chao, CY ^{[1
]}

Pan, TC

Chou, CF

Ho, JT

机构：

[1] Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan

[2] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA

来源：

PHYSICAL REVIEW E | 2000年 / 62卷 / 02期

关键词：

D O I：

10.1103/PhysRevE.62.R1485

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Electron diffraction in free-standing liquid-crystal films of N-(4-n-butoxybenzylidene)-4-n-octylaniline between 3 and 12 molecular layers thick reveals the unusual occurrence of the smectic-A' phase, a highly correlated isotropic liquid, on the surface of smectic-A films. The surface smectic-A-smectic-A' transition is found to be first order. Surprisingly, the temperature range of the subsequent surface hexatic-B phase is reduced with decreasing film thickness.

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收藏

页码：R1485 / R1488

页数：4

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