Initially Transparent Liquid Crystal Light Shutter (IMAGE)

American Institute of Physics

Initially Transparent Liquid Crystal Light Shutter

Caption

A dye-doped PNLC cell in the transparent and opaque states, placed on a printed sheet of paper. In the transparent state, the clear background image can be seen because of the high transmittance of this cell. In the opaque state, black color is provided and the background image is completely blocked, because the incident light is simultaneously scattered and absorbed.

Credit

T.-H.Yoon/Pusan Natl Univ

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