Some remarks on the evolution of research into the structures of mesogens and mesophases
作者:
JEAN BILLARD,
期刊:
Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 24,
issue 1
页码: 99-104
ISSN:0267-8292
年代: 1998
DOI:10.1080/026782998207622
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Research on mesogens and mesophases began with the surprising observation of a fluid and birefringent phase formed by a pure compound having a calamitic (rod-like) molecule. The structures of the smectic A, nematic and cholesteric phases which emerged after this discovery were elucidated essentially by observations with a polarizing microscope. Smectic polymorphism was also established by microscopic observations. The structures of the different smectic mesophases previously predicted theoretically, was then obtained further type of purposely designed mesophase was the pyramidic type, also exhibiting a rich polymorphism. Research on mesogens and mesophases is a field in continuous expansion. main historical results on the are listed here. The discotic mesophase, and its polymorphism observed. A
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