Bulg. J. Phys. vol.31 no.1-2 (2004), pp. 28-32

Wedge-Like Asymmetry Contribution to Flexoelectricity in Nematic Mixtures

Y. Marinov, S. Naydenova, A.G. Petrov
Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
Abstract. Experimental values of the flexocoefficient difference |e| = |e1z − e3x| of a BMAOB/"swallow-tail" mixture as a function of the concentration of a "swallow-tail" compound are analysed. The fact that the extrapolated value of this difference is somewhat lower than originally expected is explained by a theory showing that the strong steric asymmetry of "swallow-tail" molecules gives a comparable contribution to both flexocoefficients.

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