VISUALIZATION OF THE CHOLESTERIC TEXTURE NEAR A GRANDJEAN LINE

Authors
HEYNDERICKX I BROER DJ TERVOORTENGELEN Y
Citation
I. Heynderickx et al., VISUALIZATION OF THE CHOLESTERIC TEXTURE NEAR A GRANDJEAN LINE, Liquid crystals, 15(5), 1993, pp. 745-748
Citations number
12
Categorie Soggetti
Crystallography
Journal title
Liquid crystals → ACNP
ISSN journal
02678292
Volume
15
Issue
5
Year of publication
1993
Pages
745 - 748
Database
ISI
SICI code
0267-8292(1993)15:5<745:VOTCTN>2.0.ZU;2-Z
Abstract
The twisted structure near a Grandjean line in a cholesterically order ed liquid crystalline network is visualized by scanning electron micro scopy. It is shown that the formation of an extra pi-rotation in the m olecular helix at a Grandjean line occurs at a localized depth in the sample and gives rise to an edge dislocation of strength 1/2, dissocia ted into a pair of two simple line dislocations.