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arXiv · 1109.2170

Effects of polarization azimuth in dynamics of electrically assisted light-induced gliding of nematic liquid-crystal easy axis

A. V. Dubtsov·S. V. Pasechnik·Alexei D. Kiselev·D. V. Shmeliova·V. G. Chigrinov
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Abstract

We experimentally study the reorientation dynamics of the nematic liquid crystal easy axis at photoaligned azo-dye films under the combined action of in-plane electric field and reorienting UV light linearly polarized at varying polarization azimuth, $\phi_p$. In contrast to the case where the light polarization vector is parallel to the initial easy axis and $\phi_p=0$, at $\phi_p\ne 0$, the pronounced purely photoinduced reorientation is observed outside the interelectrode gaps. In the regions between electrodes with non-zero electric field, it is found that the dynamics of reorientation slows down with $\phi_p$ and the sense of easy axis rotation is independent of the sign of $\phi_p$.

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A. V. Dubtsov, S. V. Pasechnik, Alexei D. Kiselev, D. V. Shmeliova, V. G. Chigrinov. 2011-09-09. Effects of polarization azimuth in dynamics of electrically assisted light-induced gliding of nematic liquid-crystal easy axis. https://doi.org/10.1063/1.3701781

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