Abstract
The CuS nanoparticles (NPs) coated by poly(vinylpyrrolidone) (PVP) layer were doped into bistable liquid crystal (LC) film to provide an electric, thermal or optical phase-shift controllable films. The CuS/PVP NPs could form a compatible NIR absorbing film, which could generate heat to switch LC film from planar texture to focal conic texture. The appropriate content of CuS/PVP NPs was provided to achieve fast thermal response, satisfactory dispersion and clear display brightness. The novel LC film containing 0.8 wt.% CuS/PVP NPs could save almost 51% time at thermal elimination, comparing to LC mixture without NIR absorbent. The hybrid organic-inorganic functional bistable LC material reported here extend and open up new application of LC writing tablets.
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