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Investigation of a Twisted Phase between the Cholesteric and the Smectic A Phase
Author(s) -
Chanishvili A.,
Chilaya G.,
Petriashvili G.,
Neundorf M.,
Pelzl G.
Publication year - 1996
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170310526
Subject(s) - mesophase , dopant , phase (matter) , materials science , liquid crystal , texture (cosmology) , ternary operation , reflection (computer programming) , crystallography , condensed matter physics , chemistry , doping , organic chemistry , physics , optoelectronics , artificial intelligence , computer science , image (mathematics) , programming language
In a ternary mixture of two liquid crystals and a non‐mesomorphic chiral dopant an intermediate state with an unusual texture was found between the cholesteric and the S A phase which could be identified as a separate twisted mesophase. The reflection wavelength of this mesophase does not change with temperature whereas the transmission of unpolarized light decreases from 50 to 20%. The experimental findings point to the existence of a twisted grain boundary phase.