Email this article Electrooptical response of the films of polymer dispersed nematic with conical boundary conditions
- Authors: Feyzer K.A.1, Krakhalev M.N.1,2, Shabanov V.P.3, Zyryanov V.Y.1,3
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Affiliations:
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS
- Institute of Engineering Physics and Radio Electronics, Siberian Federal University
- Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”
- Issue: Vol 22, No 1 (2021)
- Pages: 201-209
- Section: Section 3. Technological Processes and Materials
- URL: https://journals.eco-vector.com/2712-8970/article/view/562842
- DOI: https://doi.org/10.31772/2712-8970-2021-22-1-201-209
- ID: 562842
Cite item
Abstract
The electrooptic response of films of polymer dispersed nematic under conical boundary conditions has been investigated. An axial-bipolar director configuration is formed in nematic droplets. It has been shown that initially, the orientation of droplet’s bipolar axes is chaotic both in the sample plane and relative to the normal to the substrates. The applied voltage U orients the droplet’s bipolar axes parallel to the electric field and the reorientation process is threshold only when the bipolar axis is initially orthogonal to the substrate normal. Accordingly, the samples strongly scatter light in the initial state, and the optical response to an electric field is thresholdless. The samples with a film thickness of 5, 10, 20 and 30 μm have been studied. All the samples under study are characterized by a high transmittance and contrast ratio, which for a 30 μm sample are equal to 84 % and 5536, respectively, and achieved at U = 12 V. The results obtained are relevant for use in low-power optoelectronic devices required for the development of energy-saving technologies in aerospace engineering.
About the authors
Kristina A. Feyzer
Kirensky Institute of Physics, Federal Research Center KSC SB RAS
Author for correspondence.
Email: fka@iph.krasn.ru
Engineer, Laboratory of Molecular Spectroscopy
Russian Federation, 50/38, Akademgorodok, Krasnoyarsk, 660036Mikhail N. Krakhalev
Kirensky Institute of Physics, Federal Research Center KSC SB RAS; Institute of Engineering Physics and Radio Electronics, Siberian Federal University
Email: fka@iph.krasn.ru
Cand. Sc., Senior Researcher, Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Associate Professor at the Department of General Physics, Institute of Engineering Physics and Radio Electronics, Siberian Federal University
Russian Federation, 50/38, Akademgorodok, Krasnoyarsk, 660036; 79, Svobodny Av., Krasnoyarsk, 660041Vasily Ph. Shabanov
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”
Email: shabanov@ksc.krasn.ru
Dr. Sc., Professor, Academician, Scientific Director
Russian Federation, 50, Akademgorodok St., Krasnoyarsk, 660036Victor Ya. Zyryanov
Kirensky Institute of Physics, Federal Research Center KSC SB RAS; Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”
Email: zyr@iph.krasn.ru
Dr. Sc., Professor, Head of the Scientific Direction and Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS; Head of the Department of Molecular Electronics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”
Russian Federation, 50/38, Akademgorodok, Krasnoyarsk, 660036; 50, Akademgorodok St., Krasnoyarsk, 660036References
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