ADSORPTION OF LIQUID-CRYSTALS IMAGED USING SCANNING TUNNELING MICROSCOPY

被引：25

作者：

MCMASTER, TJ

CARR, H

MILES, MJ

CAIRNS, P

MORRIS, VJ

机构：

[1] AFRC Institute of Food Research, Colney Lane, Norwich

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A | 1990年 / 8卷 / 01期

关键词：

D O I：

10.1116/1.576370

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Scanning tunneling microscopy has been used to obtain images of the surface conformations of 4- n-4'-cyano-biphenyl, a room-temperature smectic liquid crystal. Working in air and using the constant-current mode, it has been possible to resolve both the aliphatic and aromatic parts of the molecule, and to observe individual benzene rings. Two previously unreported structures have been observed: an overlapping bilayer of layer spacing 37 A, and a densely packed monolayer of spacing 24 A. Periodic dislocations in the molecular packing have also been observed. Surface forces and intermolecular interactions are discussed as factors which could lead to these observed structures. © 1990, American Vacuum Society. All rights reserved.

引用

页码：672 / 674

页数：3

共 23 条

[1] SYNCHROTRON X-RAY STUDIES OF LIQUID-VAPOR INTERFACES [J].