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Switching Mechanism in Polar Columnar Mesophases Made of Bent‐Core Molecules
Author(s) -
Gorecka Ewa,
Vaupotič Nataša,
Pociecha Damian,
Čepič Mojca,
Mieczkowski Jozef
Publication year - 2005
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200400623
Subject(s) - bent molecular geometry , polar , rotation (mathematics) , ferroelectricity , chemical polarity , tilt (camera) , core (optical fiber) , materials science , molecule , phase (matter) , liquid crystal , condensed matter physics , crystallography , molecular physics , chemical physics , optics , chemistry , physics , geometry , optoelectronics , mathematics , organic chemistry , astronomy , dielectric , composite material
The behaviour of polar, broken‐layer‐type columnar phases made of bent molecules (B 1Rev and B 1RevTilted ) was studied under an applied electric field. There are two competing mechanisms of ferroelectric switching in the polar B 1RevTilted columnar phase: collective rotation around the long molecular axis and collective rotation around the tilt cone. The proposed model shows that the main factor discriminating the type of switching is the width of the column cross‐section.