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- W2052138051 abstract "Flexoelectricity is a unique property of liquid crystals; it is a linear coupling between electric polarizations and bend and/or splay distortions of the direction of average molecular orientation. Recently it was shown [J. Harden et al., Phys. Rev. Lett. 97, 157802 (2006)] that the bend flexoelectric coefficient in bent-core nematic liquid crystals can be three orders of magnitude higher than the effect with calamitic (rod-shaped) molecular shape. Here we report the converse of the flexoelectric effect: An electric field applied across a bent-core liquid crystal sandwiched between thin flexible substrates produces a director distortion which is manifested as a polarity-dependent flexing of the substrates. The flex magnitude is shown to be consistent with predictions based upon both the measured value of the bend flexoelectric constant and the elastic properties of the substrates. Converse flexoelectricity makes possible a new class of microactuators with no internal moving parts, which offers applications as diverse as optical beam steering to artificial muscles." @default.
- W2052138051 created "2016-06-24" @default.
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- W2052138051 date "2008-09-02" @default.
- W2052138051 modified "2023-10-16" @default.
- W2052138051 title "Converse flexoelectric effect in a bent-core nematic liquid crystal" @default.
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- W2052138051 doi "https://doi.org/10.1103/physreve.78.031702" @default.
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