Photocontrollable photonic crystals based on porous silicon filled with photochromic liquid crystalline mixture
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00535113" target="_blank" >RIV/68378271:_____/20:00535113 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/adom.202001267" target="_blank" >https://doi.org/10.1002/adom.202001267</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adom.202001267" target="_blank" >10.1002/adom.202001267</a>
Alternative languages
Result language
angličtina
Original language name
Photocontrollable photonic crystals based on porous silicon filled with photochromic liquid crystalline mixture
Original language description
Novel photocontrollable photonic crystals based on porous silicon prepared by electrochemical etching were elaborated and their great potential for creation of photoswitchable materials was demonstrated. Porous silicon-based photonic porous wafers were filled with photochromic mixture based on nematic LC and azobenzene derivative. According to EPR measurements, molecules of LC mixture are aligned along the etched channels in silicon plate. UV-irradiation of composite causes a shift of photonic band gap to longer wavelengths by ca. 10 nm. This phenomenon is explained by isothermal photoinduced nematic–isotropic transition associated with formation bent-shaped Z-isomer, effective refractive index slightly increases as initial homeotropic alignment of LC mixture transforms to non-aligned state. This process is completely reversible under visible light (428 nm). Obtained photonic crystal photochromic LC composites can be considered as new promising materials for photonics.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Optical Materials
ISSN
2195-1071
e-ISSN
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Volume of the periodical
8
Issue of the periodical within the volume
22
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
1-7
UT code for WoS article
000579410700001
EID of the result in the Scopus database
2-s2.0-85092725981