Journal ArticleDOI
Response times and voltages for PDLC light shutters
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In this article, the response times and operating voltages of light shutters formed from polymer dispersed liquid crystals (PDLCs) have been studied experimentally and the results compared with calculations based on non-sperhically shaped nematic droplet models.Abstract:
The response times and operating voltages of light shutters formed from polymer dispersed liquid crystals (PDLCs) have been studied experimentally and the results compared with calculations based on non-sperhically shaped nematic droplet models. The experiments were performed on light shutters with elongated and uniformly aligned droplets where the relaxation time and voltage response were measured. It is shown that the droplet shape can be a dominant factor, particularly for the relaxation time, and the data are compared with equations derived in terms of the aspect ratio of the droplet l = a/b, where a and b are the lengths of the semi-major and semi-minor axes, respectively, of the elongated droplet. It is further demonstrated that the electric field inside the droplet can be considerably smaller than the applied field, due to the conductivity and dielectric properties of the polymer and liquid crystal materials. These data are used to obtain values for the ratio of the conductivities of the p...read more
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References
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Journal ArticleDOI
Field controlled light scattering from nematic microdroplets
TL;DR: In this article, the light scattering and electro-optic response of new material with display potential are investigated, which consist of microdroplets of nematic liquid crystals which are spontaneously formed in a solid polymer at the time of its polymerization.
Journal ArticleDOI
Polymer dispersed nematic liquid crystal for large area displays and light valves
TL;DR: In this paper, it was shown that the macroscopic electro-optical properties of the liquid crystal film can be modeled if the distribution of liquid-crystal droplet sizes is known.
Journal ArticleDOI
Polymer dispersed liquid crystals for display application
TL;DR: An overview of polymer dispersed liquid crystal (PDLC) materials, their physical properties, and potential applications in the optic and electrooptic industry is presented in this article, with a focus on optical and optical properties.