Applied Physics Letters
We report the use of a low concentration polymer network to stabilize electric field-induced diffraction gratings in cholesteric liquid crystals. The stabilized gratings can be electrically switched between a zero-field "on" state, which exhibits approximately 75% diffraction efficiency, and a moderate field (typically 3 V/mu m) "off" state. Grating spacings between 1.7 and 30 mu m are obtained in a 10 mu m thick cell by variation of the concentration of chiral dopant used to form the cholesteric liquid crystal. (C) 1998 American Institute of Physics.
Lee, S. N.; Chien, Liang-Chy; and Sprunt, Samuel N. (1998). Polymer-Stabilized Diffraction Gratings from Cholesteric Liquid Crystals. Applied Physics Letters 72(8), 885-887. Retrieved from http://digitalcommons.kent.edu/cpippubs/37