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Giant flexoelectricity in bent-core nematic liquid crystal elastomers
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View: Figures


Image of FIG. 1.
FIG. 1.

The bend flexoelectric coefficient of the BCLCE (solid circles). For comparison, solid and open squares show, respectively, analogous results for the pure BCN monomer and calamitic liquid crystal elastomers swollen with the pure BCN (Ref. 12). The solid and dashed lines are guides to the eye. As the result of the preparation procedure (see SI) the liquid crystal elastomer film has a reasonably good planar alignment that was verified by polarizing microscope.

Image of FIG. 2.
FIG. 2.

Frequency response of the BCLCE sample studied in Fig. 1, at . Data points with squares (circles) were obtained for increasing (decreasing) frequency . The fits (dotted lines) correspond to the equation ; the linear term in is much larger or the decreasing frequency curve. and ( below the isotropic–nematic transition.

Image of FIG. 3.
FIG. 3.

The time dependence of the electric current induced by hand-flexing of the BCLCE sample at 1.7 Hz and approximately . In the inset, the size of the BCLCE is illustrated next to a 18 mm U.S. coin.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Giant flexoelectricity in bent-core nematic liquid crystal elastomers