INVESTIGATION OF A TWISTED PHASE BETWEEN THE CHOLESTERIC AND THE SMECTIC-A PHASE

Authors
CHANISHVILI A CHILAYA G NEUNDORF M PELZL G PETRIASHVILI G
Citation
A. Chanishvili et al., INVESTIGATION OF A TWISTED PHASE BETWEEN THE CHOLESTERIC AND THE SMECTIC-A PHASE, Crystal research and technology, 31(5), 1996, pp. 679-683
Citations number
11
Categorie Soggetti
Crystallography
Journal title
Crystal research and technology → ACNP
ISSN journal
02321300
Volume
31
Issue
5
Year of publication
1996
Pages
679 - 683
Database
ISI
SICI code
0232-1300(1996)31:5<679:IOATPB>2.0.ZU;2-Q
Abstract
In a ternary mixture of two liquid crystals and a non-mesomorphic chir al dopant an intermediate state with an unusual texture was found betw een the cholesteric and the Se phase which could be identified as a se parate twisted mesophase. The reflection wavelength of this mesophase does not change with temperature whereas the transmission of unpolariz ed light decreases from 50 to 20%. The experimental findings point to the existence of a twisted grain boundary phase.