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Surface-assisted photoalignment in dye-doped liquid-crystal films

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, ISSN: 1063-651X, Vol: 69, Issue: 3 1, Page: 031704
2004
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Article Description

The surface-assisted photoalignment effect of dye-doped liquid-crystal films was examined that had a homogeneous alignment. A polarizing optical microscope, a scanning electronic microscope and an atomic force microscope were used for the study. It was found that the morphology of the laser-induced surface-adsorbed dyes at the command surface strongly affected the orientation of liquid crystals (LC). The results show that in the high-intensity regime, rough and inhomogeneous ribbonlike adsorbents form on the top of the performed microgrooves, thus reorienting LC's.

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