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Liquid Crystals and their Application
Russian Journal Zhidkie kristally i ikh prakticheskoe ispol'zovanie Жидкие кристаллы и их практическое использование |
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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2021, 21 (3), 26—31.
DOI: 10.18083/LCAppl.2021.3.26 |
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Mechanosensitive Liquid Crystalline Composites Based on Cholesterics Dispersed in Polyvinyl Alcohol Films
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N. V. Balenko, A. Yu. Bobrovsky, E. S. Vtyurina, V. P. Shibaev
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Author affiliations
Lomonosov Moscow State University, Chemistry Faculty,
1 Leninskiye Gory, Moscow, 119991, Russia
E-mail: fullerene92@mail.ru
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Abstract
New liquid crystalline composites based on polyvinyl alcohol films plasticized by glycerol with the dispersed droplets of cholesteric liquid crystal have been obtained and investigated. The mechano-optical properties of the obtained composites have been studied. It is shown that under the stretching the peak of selective light reflection shifts to the short-wavelength region of the spectrum. The amplitude of the shift depends on the stretching degree and reaches 100 nm. The obtained polymer composites are promising for creating optomechanical tensile and deformation sensors.
Keywords: LC composites, polyvinyl alcohol, cholesteric phase, selective reflection of light
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