ORDERING AND SELF-DIFFUSION IN THE 1ST MOLECULAR LAYER AT A LIQUID-CRYSTAL POLYMER INTERFACE

被引：99

作者：

CRAWFORD, GP ^{[1
]}

YANG, DK ^{[1
]}

ZUMER, S ^{[1
]}

FINOTELLO, D ^{[1
]}

DOANE, JW ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.66.723

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

H-2 NMR of a liquid crystal confined to submicron cylindrical cavities, in a 17-K interval above the nematic-isotropic transition, reveals a weakly orientationally ordered molecular layer at the cavity wall governed by local interactions. The order (S0 = 0.02) is temperature independent so that a partial wetting is realized with no prewetting transition expected. A molecular exchange rate between the surface layer and the bulk is measured to be approximately 10(3) s-1. The coherence length measuring the order penetrating further into the cavity is described by alpha = 0.4 and xi-0 = 0.6 nm.

引用

页码：723 / 726

页数：4

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