Single-layered microscale linear-gradient PDLC material for electro-optics by Y. G. Marinov, G. B. Hadjichristov, and A. G. Petrov

Crystal Research and Technology

Cryst. Res. Technol. 44, 870 (2009) - Abstract -

Single-layered microscale linear-gradient PDLC material for electro-optics

Y. G. Marinov, G. B. Hadjichristov, and A. G. Petrov

Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

Keywords	polymer-dispersed liquid crystals, PDLC, single layers, gradient layers, thin films
PACS	42.70.Df, 61.30.Gd, 61.30.Pq, 78.66.Qn
DOI	10.1002/crat.200900147

We report on single-layered optical material of linear-gradient microscale polymer-dispersed liquid crystal (PDLC). E7/NOA65 composite films formed by pulsed UV laser photopolymerization-induced phase separation exhibit two morphology types, namely a bipolar and a hybrid alignment of liquid crystal droplets. The specific structural properties of the produced PDLC layers, such as the droplet shape uniformity and alignment, as well as the droplet size control through the film thickness, facilitate the efficient control on the electro-optical (EO) response, thus being of practical interest for EO device applications.

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