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Molecular Crystals and Liquid Crystals Volume 611, 2015 - Issue 1: 25th International Liquid Crystal Conference (ILCC 2014)
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Physics

Flexoelectric Behavior of a Bimesogenic Liquid Crystal

R. BalachandranDepartment of Electronic and Electrical Engineering, Trinity College, University of Dublin, Dublin, Ireland
,
V. P. PanovDepartment of Electronic and Electrical Engineering, Trinity College, University of Dublin, Dublin, Ireland;School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
,
Yu. P. PanarinDepartment of Electronic and Electrical Engineering, Trinity College, University of Dublin, Dublin, Ireland;School of Electronic and Communication Engineering, Dublin Institute of Technology, Dublin, Ireland
,
M. G. TambaDepartment of Chemistry, University of Hull, UK
,
G. H. MehlDepartment of Chemistry, University of Hull, UK
,
J. K. SongSchool of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon, Korea
&
J. K. VijDepartment of Electronic and Electrical Engineering, Trinity College, University of Dublin, Dublin, IrelandCorrespondence[email protected]
 show all
Pages 65-70 | Published online: 06 Jul 2015
 
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Abstract

The effective flexoelectric coefficient and flexoelectric polarization are investigated for a bimesogenic liquid crystal CBC11CB with a twist bend nematic phase (Ntb). The effective flexoelectric coefficients for CBC11CB in the ordinary nematic phase (N) are obtained to be much larger in comparison to conventional calamitics, and is almost twice higher for CBC11CB than that reported for another odd symmetric bimesogen. The flexoelectric polarization (Pf) in the N phase is found to be almost 2.5 times higher than in rod-like molecules. Additionally, Pf is obtained to be much larger in the Ntb phase than in the nematic phase.

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