Optically switchable twist nematic grating based on a dye-doped liquid crystal film

Abstract

The adsorption rate of methyl red dyes on a polymer surface is studied and determined to be much faster than that on indium-tin-oxide-coated glass. Therefore, an optically switchable twist-nematic grating is fabricated using a dye-doped liquid crystal cell, with a glass substrate coated with a polymer relief grating.