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Response time measurements of liquid crystal dispersed in polyester resin film
Author(s) -
Mucha M.
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070430114
Subject(s) - liquid crystal , materials science , polyester , oscilloscope , optical microscope , transmittance , electric field , rise time , composite material , response time , liquid helium , optics , polarized light microscopy , polyester resin , voltage , scanning electron microscope , optoelectronics , helium , chemistry , organic chemistry , physics , computer graphics (images) , quantum mechanics , detector , computer science
New material consisting of nematic liquid crystal droplets from 2‐30 μm in radius in a crosslinked UV‐cured polyester resin binder was prepared. Micrographs of the samples were taken in the optical microscope with cross‐polaroids. Reorientation of the droplets by application and removal of an electric field is discussed. Electrooptic properties of the material were measured using polarized light from a helium‐neon laser. Transmittance and response time vs. voltage applied with driving frequency 2 kHz were detected on the oscilloscope and photographed. The response times were: rise time τ on shorter than 20 ms at applied voltage higher than 50 V, and decay time τ off = 80 ms. They are a promising feature for this material for a display application.