|Title:||Formation of liquid crystal gratings with crystal/quasicrystal patterns through photoalignment||Authors:||Lin, Hui-Chi
Liang, Hsing Chih
|Keywords:||Liquid crystal;photoalignment;azo dye;grating;quasicrystal pattern||Issue Date:||12-Feb-2022||Publisher:||TAYLOR & FRANCIS LTD||Source:||LIQUID CRYSTALS||Abstract:||
In this study, a simple method for generation of liquid crystal (LC) grating with crystal/quasicrystal/kaleidoscopic patterns via photoalignment is proposed. The crystal/quasicrystal/kaleidoscopic patterns are created using multiple-beam interference when the recording beam is divided into multiple beams by passing a multiple-aperture mask and focused by a lens. Two-dimensional (2D) patterns are recorded on LC cells based on the laser-induced adsorption of azo dyes that guide the orientation of the LC molecules. Measurements indicate that the 2D LC gratings with crystal/quasicrystal patterns are electro-optically tunable and possess polarisation-independent diffraction efficiency.
|Appears in Collections:||光電與材料科技學系|
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