Cholesteric Liquid Crystal System Research Articles

Long Term Stability of Cholesteric Liquid Crystal Systems

Abstract Aging cholesteric liquid crystals in various atmospheres resulted in little change in the temperatures at which their color responses occurred. However, the intensity of the color display was drastically reduced. Evidence is produced to show that the cholesteric plane texture is unstable in the presence of substrates and readily converts to another, which has the appearance of the smectic fan shaped texture, under the influence of a variety of stimuli, such as UV radiation, atmospheric contaminants, and substrate effects.