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

C. R. Lee, T. L. Fu, K. T. Cheng, T. S. Mo, A. Y.G. Fuh

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86 Scopus citations


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.

Original languageEnglish
Article number031704
Pages (from-to)031704-1-031704-6
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Issue number3 1
StatePublished - Mar 2004


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