On the sign of flexoelectric coefficients in nematic liouid crystals
- 1 April 1984
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics Letters Section
- Vol. 2 (4) , 135-141
- https://doi.org/10.1080/07315178408202434
Abstract
We measure the distortion of a nematic liquid crystal placed in a quadrupolar field distribution. This allows the measurement of (e1+e3)/K, where e1 and e3 are the flexoelectric coefficients and K a bend curvature elastic constant. For MBBA, e1+e3 is found negative, contrary to previous estimates. For 80CB, e1+e3 is found positive. This confirms the conformational origin of flexoelectricity in this later compound.Keywords
This publication has 5 references indexed in Scilit:
- Conformational flexoelectricity in nematic liquid crystalsJournal de Physique Lettres, 1983
- Flexoelectrically controlled twist of texture in a nematic liquid crystalJournal de Physique Lettres, 1982
- The Different Aspects of Flexoelectricity in NematicsMolecular Crystals and Liquid Crystals, 1980
- Flexoelectricity in nematic and smectic-A liquid crystalsJournal of Applied Physics, 1976
- ELECTRICAL FIELD DISTRIBUTION ASSOCIATED WITH DYNAMIC SCATTERING IN NEMATIC LIQUID CRYSTALSApplied Physics Letters, 1970