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Title: Flexoelectric studies on mixtures of compounds made of rodlike and bent-core molecules
Authors: Kundu, Brindaban
Roy, Arun
Pratibha, R.
Madhusudana, N.V.
Issue Date: 24-Aug-2009
Publisher: The American Institute of Physics
Citation: Applied Physics Letters, 2009, Vol.95, p081902
Abstract: We report measurements of the temperature variations of the flexoelastic ratio (e1−e3)/K of octadecyl cyanobiphenyl and a mixture of this compound with another one with bent-core (BC) molecules, using hybrid aligned nematic cells. Addition of 5 mol % of the BC compound doubles the flexoelastic ratio, implying that the BC compound has ~20 times larger value compared to that of the compound with calamitic molecules. Mixtures with >11 mol % of the BC compound exhibit only a homeotropic alignment. We develop a simple model to account for this result which arises because of a large positive self-energy due to flexoelectric polarization.
Description: Open Access
ISSN: 0003-6951- P
1077-3118 -E
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Copyright: 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Appears in Collections:Research Papers (SCM)

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