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Field‐Induced Switching of the Layer Chirality in SmCP Phases of Novel Achiral Bent‐Core Liquid Crystals and their Unusual Large Increase in Clearing Temperature under Electric Field Application
Author(s) -
Schröder Martin W.,
Diele Siegmar,
Pelzl Gerhard,
Weissflog Wolfgang
Publication year - 2004
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.200300904
Subject(s) - bent molecular geometry , chirality (physics) , electric field , core (optical fiber) , field (mathematics) , liquid crystal , materials science , layer (electronics) , condensed matter physics , nanotechnology , chemical physics , chemistry , physics , optoelectronics , composite material , chiral symmetry breaking , mathematics , quantum mechanics , pure mathematics , nambu–jona lasinio model , quark
Switching of chirality: A field‐induced inversion of the layer chirality has been found in the SmCP A phase of novel bent‐core mesogens. Furthermore, a field‐induced enhancement of the clearing temperature (transition temperature SmCP A to isotropic) up to 4 K could be observed; this is obviously due to the field‐induced alignment of ferroelectric clusters, which exist already in the isotropic liquid. The picture shows a texture of the SmCP A phase with circular domains.