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1 June 1991 Droplet-size effects in light scattering from polymer-dispersed liquid-crystal films
G. Paul Montgomery Jr.; John L. West; Winifred Tamura-Lis
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Proceedings Volume 1455, Liquid-Crystal Devices and Materials; (1991) https://doi.org/10.1117/12.44681
Event: Electronic Imaging '91, 1991, San Jose, CA, United States
Abstract
The effects of droplet size on light scattering by polymer-dispersed liquid crystal (PDLC) films have been studied theoretically and experimentally. Rayleigh-Gans calculations for a collection of droplets which scatter independently predict that backscattering at wavelength (lambda) will be maximized when the droplet radius is about (lambda) /7. These calculations are consistent with hemispherical transmittance and reflectance measurements on PDLC films with controlled droplet sizes in which multiple scattering is known to be important. These measurements indicate that solar attenuation by PDLC films will probably be greatest when the droplet size is chosen to maximize backscattering of visible radiation. This choice also increases solar attenuation due to absorption of radiation trapped inside a PDLC film by total internal reflection.
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G. Paul Montgomery Jr., John L. West, and Winifred Tamura-Lis "Droplet-size effects in light scattering from polymer-dispersed liquid-crystal films", Proc. SPIE 1455, Liquid-Crystal Devices and Materials, (1 June 1991); https://doi.org/10.1117/12.44681
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