Contributions of the molecular species to the magnitude of the spontaneous polarization in ferroelectric liquid crystals
作者:
J.S. Patel,
J.W. Goodby,
期刊:
Philosophical Magazine Letters
(Taylor Available online 1987)
卷期:
Volume 55,
issue 6
页码: 283-287
ISSN:0950-0839
年代: 1987
DOI:10.1080/09500838708214698
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
In certain ferroelectric liquid crystals that contain the biphenylyl moiety, the spontaneous polarization undergoes a change in direction relative to the optical axis of the system as a function of temperature. Consequently, at a characteristic temperature for a particular derivative, the polarization vanishes. A model based on the presence of at least two species, interconvertible via an activation barrier is proposed to explain this extraordinary behaviour of the polarization. It is suggested that these species are most likely identified with the rotational conformers of these materials while they are in their liquid-crystalline states.
点击下载:
PDF (306KB)
返 回