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  • Title: A reflective polarizer-free electro-optical switch using dye-doped polymer-stabilized blue phase liquid crystals.
    Author: Lin YH, Chen HS, Chiang TH, Wu CH, Hsu HK.
    Journal: Opt Express; 2011 Jan 31; 19(3):2556-61. PubMed ID: 21369075.
    Abstract:
    We demonstrate a reflective polarizer-free electro-optical switch using dye-doped polymer-stabilized blue phase liquid crystals (DDPSBP-LC). At the voltage-off state, the dye molecules and liquid crystals form the structure of the double twist cylinders. As a result, the DDPSBP-LC is in dark state due to the combination of Bragg reflection and light absorption. At the voltage-on state, the blue phase structure is unwound locally. The DDPSBP-LC is then in bright state because of the small light absorption only. The applications of such a switch are shutter glass of 3D displays, and electronic papers.
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