Electron diffraction studies of surface freezing in hexatic B films
作者:
Ming Cheng,
JohnT. Ho,
S.W. Hui,
Ronald Pindak,
J.W. Goodby,
期刊:
Liquid Crystals
(Taylor Available online 1994)
卷期:
Volume 17,
issue 3
页码: 361-366
ISSN:0267-8292
年代: 1994
DOI:10.1080/02678299408036576
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Electron diffraction has been used to study the freezing in free-standing hexatic B films of several members of then-alkyl 4′-n-alkyloxybiphenyl-4-carboxylate (nmOBC) homologous series. It was found that 65OBC exhibits the surface crystal E phase and the accompanying orientational epitaxy previously observed in 75OBC. In 46OBC, the surfaces also appear to attain a higher order ahead of the interior, but retain a six-fold symmetry before the entire film abruptly transforms to the crystal E phase. In 3(10)OBC, the behaviour is similar to that of 46OBC, but the film breaks prior to the observation of any crystal E transition.
点击下载:
PDF (375KB)
返 回