OBSERVATION OF LIQUID-CRYSTALS ON GRAPHITE BY SCANNING TUNNELING MICROSCOPY

被引：16

作者：

SHIGENO, M ^{[1
]}

MIZUTANI, W ^{[1
]}

SUGINOYA, M ^{[1
]}

OHMI, M ^{[1
]}

KAJIMURA, K ^{[1
]}

ONO, M ^{[1
]}

机构：

[1] ELECTROTECH LAB,TSUKUBA,IBARAKI 305,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1990年 / 29卷 / 01期

关键词：

Graphite substrate; Liquid crystal; Model of molecular arrangement; Scanning tunneling microscopy;

D O I：

10.1143/JJAP.29.L119

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Molecules of liquid crystals adsorbed on graphite were observed by scanning tunneling microscopy (STM). Liquid crystals of both smectic and nematic phases provided periodic STM images of 3-nm-spacing lines, seemingly composed of molecules with their axes vertical to the line. Detailed investigation of the images revealed that several different patterns existed in smectic liquid crystal. On the other hand, nematic liquid crystal exhibited one reproducible pattern. Monolayer, multilayer, and dimer-based molecular arrangements are discussed. Models for the molecular arrangement of the nematic liquid crystal are proposed. © 1990 IOP Publishing Ltd.

引用

页码：L119 / L122

页数：4

共 7 条

[1] IMAGING OF LIQUID-CRYSTALS USING A TUNNELLING MICROSCOPE [J].