Quasilinear electro-optical response in a polymer-dispersed nematic liquid crystal

Nicoletta, F. P.; Nicoletta, F.P.; Cupelli, D.; De Filpo, G.; Macchione, M.; Chidichimo, G.; Chidichimo, G
December 2000
Applied Physics Letters;12/4/2000, Vol. 77 Issue 23
Academic Journal
Polymer-dispersed nematic liquid crystals are known to exhibit a quadratic electro-optic response. For practical applications, a linear dependence on the applied electric field is often required. In this letter, polymer-dispersed nematic liquid crystal films with a built-in dc electric field are shown to be good electro-optical devices with a linear response. The built-in electric field is obtained by energizing films with an external dc field. The electro-optical response dependence on the strength and frequency of the driving field is discussed. © 2000 American Institute of Physics.


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