We developed a dual frequency cholesteric light shutter which utilizes a cholesteric liquid crystal; the dielectricanisotropy of the material changes from positive to negative when the frequency of applied voltage is increased. The shutters are switched to the transparent homeotropic texture by low frequency voltages, and switched to the reflecting planar texture by high frequency voltages. We designed a waveform which reduced the transition time from the homeotropic texture to the planar texture to less than 100 ms.
Applied Physics Letters
Copyright 1997 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 70, 720 (1997) and may be found at http://dx.doi.org/10.1063/1.118261.
Xu, Ming; Yang, Deng-Ke (1997). Dual Frequency Cholesteric Light Shutters. Applied Physics Letters 70(6) 720-722. doi: 10.1063/1.118261. Retrieved from https://oaks.kent.edu/cpippubs/73