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Laser-induced formation of “craters” and “hills” in azobenzene-containing polymethacrylate films
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SYSNO ASEP 0533000 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Laser-induced formation of “craters” and “hills” in azobenzene-containing polymethacrylate films Author(s) Bobrovsky, A. (RU)
Mochalov, K. (RU)
Solovyeva, D. (RU)
Shibaev, V. (RU)
Cigl, Martin (FZU-D) RID, ORCID
Hamplová, Věra (FZU-D) RID, ORCID, SAI
Bubnov, Alexej (FZU-D) RID, ORCID, SAINumber of authors 7 Source Title Soft Matter - ISSN 1744-683X
Roč. 16, č. 23 (2020), s. 5398-5405Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords azobenzene moiety ; liquid crystalline photo-responsive films ; control of topology ; functional polymethacrylate ; contactless manipulation with matter Subject RIV JJ - Other Materials OECD category Nano-materials (production and properties) R&D Projects GA19-03564S GA ČR - Czech Science Foundation (CSF) LTC19051 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000542968800020 EID SCOPUS 85086747503 DOI 10.1039/d0sm00601g Annotation Functional organic macromolecular materials with an ability to change their topology in response to external contactless stimuli, like light irradiation, attracts considerable attention. This work is devoted to contactless control of the surface topology and formation of the surface features in the amorphousized and liquid crystalline films of two azobenzene-containing polymers. The investigated polymers are based on methacrylate polymeric backbone and side-chains containing the azobenzene chromophores with two lateral methyl substituents in ortho-positions. Irradiation of the polymethacrylate films by focused polarized light of green (532 nm) and red (633 nm) lasers induces a specific photodeformation of the films surface. In the case of the green light formation of the “craters” having anisotropic borders was found, whereas for the red light highly asymmetric “hills” were observed. The possible mechanisms of the surface topology feature and formation are discussed.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address https://doi.org/10.1039/d0sm00601g
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