Abstract
We have found new monomers which are able to give stable nematic and isotropic emulsions with micron-sized droplets. A poor contrast ratio in optical transmittance is obtained when thin electro-optical films of nematic emulsions are prepared with only one monomer. Matching between a monomer matrix refractive index and that of a liquid crystal, and a consequent improvement of the electro-optical performance of emulsion films have been obtained by mixing such monomers. The films thus prepared show opacities less than 1% in the absence of an applied field and a transmittances increase up to 85% by applying a 0.2 V μm−1 electric field at 1 kHz. The long time stability, the high contrast ratio, and the low driving fields suggest that nematic emulsion films are promising systems for electro-optical applications.
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