Electrooptic switching in oriented liquid-crystal films

Abstract

The recursion method is applied analytically to the Anderson model in the strong disorder limit. The chain basis and chain parameters are determined exactly to lowest order in the hopping energy. It is shown that for all dimensionalities there is a dense spectrum of exponentially localised states with a characteristic length independent of energy and proportional to the ratio of hopping to disorder. This calculation extends the application of the recursion method to all degrees of disorder and answers some questions about denseness of the spectrum, correlation of parameters, and completeness of the chain basis.

Toward High Speed Modulation By Nematic Liquid Crystals

“…j (ir/d) 2 or H/H Eq. (4) is reduced to decay~* n (7) It is an interesting phenomenon that at high fields the decay time of liquid crystal is inversely proportional to the intensity of the applied magnetic field and is independent of liquid crystal thickness. This effect can be explained as follows: For a thick cell, although the free relaxation time is long, the threshold field is low so that the improvement factor [1+(H/H ) 2 ] is large at high field.…”