Control of Transmittance by Thermally Induced Phase Transition in Guest-Host Liquid Crystals

초록

Guest-host liquid crystal (GHLC) consists of host liquid crystal and guest dichroic dye. It can be switched between the transparent and opaque states by controlling the light absorption. In this paper, transmission control via the phase transition in GHLCs is presented. The smectic A, nematic, and isotropic phases as the high-, mid-, and low-transmittance states of a GHLC cell are used, respectively, to control the transmittance. It is demonstrated that the proposed GHLC cell can be used as a self-shading smart window for energy saving, which allows people to see through it even when it is darkened.

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