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On the Origin of the “Giant” Electroclinic Effect in a “De Vries”‐Type Ferroelectric Liquid Crystal Material for Chirality Sensing Applications
Author(s) -
Kapernaum Nadia,
Walba David M.,
Korblova Eva,
Zhu Chenhui,
Jones Chris,
Shen Yongqian,
Clark Noel A.,
Giesselmann Frank
Publication year - 2009
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.200900065
Subject(s) - ferroelectricity , chirality (physics) , liquid crystal , synchrotron , condensed matter physics , phase transition , polarization (electrochemistry) , crystallography , phase (matter) , scattering , chemistry , materials science , optics , physics , chiral symmetry , dielectric , organic chemistry , optoelectronics , quantum mechanics , nambu–jona lasinio model , quark
W415 is a chiral smectic compound with a remarkably weak temperature dependence of its giant electroclinic effect in the liquid crystalline smectic A* phase. Furthermore it possesses a high spontaneous polarization in the smectic C* phase. The origin of this striking electroclinic effect is the co‐occurrence of a de Vries‐type ordering with a weak first‐order tilting transition (see the synchroton X‐ray scattering profiles).