Advanced Optical Materials, volume 8, issue 22, pages 2001267
Photocontrollable Photonic Crystals Based on Porous Silicon Filled with Photochromic Liquid Crystalline Mixture
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Institute of Physics of the Czech Academy of Sciences 1999/2 Na Slovance Prague 8 182 21 Czech Republic
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Publication type: Journal Article
Publication date: 2020-10-20
Journal:
Advanced Optical Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 9
ISSN: 21951071
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Abstract
Novel photocontrollable photonic crystals based on porous silicon prepared by electrochemical etching are elaborated and their great potential for creation of photoswitchable materials is demonstrated. For this purpose, silicon‐based photonic porous wafers are filled with photochromic liquid crystalline (LC) nematic mixture formulated by 4‐pentyl‐4′‐cyanobiphenyl and a specific azobenzene derivative. Results of electron paramagnetic resonance spectroscopy reveal that molecules of LC mixture are aligned along the etched channels in silicon plate, i.e., in normal direction. UV irradiation (375 nm) of the resulting composite causes a shift of photonic band gap to longer wavelengths by ≈10 nm. This phenomenon is explained by isothermal photoinduced nematic–isotropic phase transition associated with the bent‐shaped Z isomer formation of the azobenzene compound. During this transition, effective refractive index slightly increases as the initial homeotropic alignment of LC molecules transforms to the isotropic nonaligned state. This process is completely reversible under visible light action (428 nm) and can be repeated many times. Obtained photonic crystal photochromic LC composites can be considered as new promising material for photonic applications.
Citations by journals
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Journal of Molecular Liquids
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Polymers
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1 publication, 5.88%
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Advanced Materials
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1 publication, 5.88%
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Journal of Physical Chemistry B
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Journal of Physical Chemistry B
1 publication, 5.88%
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Phase Transitions
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Phase Transitions
1 publication, 5.88%
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1 publication, 5.88%
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1 publication, 5.88%
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1 publication, 5.88%
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Citations by publishers
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Wiley
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Wiley
4 publications, 23.53%
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American Chemical Society (ACS)
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American Chemical Society (ACS)
3 publications, 17.65%
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Elsevier
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Elsevier
3 publications, 17.65%
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Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
2 publications, 11.76%
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Royal Society of Chemistry (RSC)
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Royal Society of Chemistry (RSC)
2 publications, 11.76%
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Taylor & Francis
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Taylor & Francis
2 publications, 11.76%
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The Korean Fiber Society
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The Korean Fiber Society
1 publication, 5.88%
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- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Bobrovsky A. et al. Photocontrollable Photonic Crystals Based on Porous Silicon Filled with Photochromic Liquid Crystalline Mixture // Advanced Optical Materials. 2020. Vol. 8. No. 22. p. 2001267.
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Bobrovsky A., Svyakhovskiy S. E., Bogdanov A. V., Shibaev V., Cigl M., Hamplová V., Kašpar M. Photocontrollable Photonic Crystals Based on Porous Silicon Filled with Photochromic Liquid Crystalline Mixture // Advanced Optical Materials. 2020. Vol. 8. No. 22. p. 2001267.
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TY - JOUR
DO - 10.1002/adom.202001267
UR - https://doi.org/10.1002%2Fadom.202001267
TI - Photocontrollable Photonic Crystals Based on Porous Silicon Filled with Photochromic Liquid Crystalline Mixture
T2 - Advanced Optical Materials
AU - Hamplová, Věra
AU - Bobrovsky, Alexey
AU - Svyakhovskiy, S. E.
AU - Bogdanov, Alexey V
AU - Shibaev, Valery
AU - Cigl, Martin
AU - Kašpar, M.
PY - 2020
DA - 2020/10/20 00:00:00
PB - Wiley
SP - 2001267
IS - 22
VL - 8
SN - 2195-1071
ER -
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@article{2020_Bobrovsky,
author = {Věra Hamplová and Alexey Bobrovsky and S. E. Svyakhovskiy and Alexey V Bogdanov and Valery Shibaev and Martin Cigl and M. Kašpar},
title = {Photocontrollable Photonic Crystals Based on Porous Silicon Filled with Photochromic Liquid Crystalline Mixture},
journal = {Advanced Optical Materials},
year = {2020},
volume = {8},
publisher = {Wiley},
month = {oct},
url = {https://doi.org/10.1002%2Fadom.202001267},
number = {22},
pages = {2001267},
doi = {10.1002/adom.202001267}
}
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Bobrovsky, Alexey, et al. “Photocontrollable Photonic Crystals Based on Porous Silicon Filled with Photochromic Liquid Crystalline Mixture.” Advanced Optical Materials, vol. 8, no. 22, Oct. 2020, p. 2001267. https://doi.org/10.1002%2Fadom.202001267.
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