Generation of a Photoacoustic Response of a Two-Layer Polymer/Gel Structure

Generation processes of a photoacoustic response of a layered polyethylene/hydrogel structure by its irradiation with periodically modulated light have been experimentally studied. The heat sources are located in a gel near the interface with polyethylene. The response in the form of the pressure os...

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Bibliographic Details
Published in:Technical physics 2021-02, Vol.66 (2), p.349-355
Main Authors: Andrusenko, D. A., Alekseev, A. N., Kuzmich, A. G., Lazarenko, M. M., Vasilyuk, S. V., Burbelo, R. M.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Heat sources
Hydrogels
Physics
Physics and Astronomy
Physics for Sciences of Life
Polyethylene
Polyethylenes
Pressure oscillations
Thickness
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Summary:Generation processes of a photoacoustic response of a layered polyethylene/hydrogel structure by its irradiation with periodically modulated light have been experimentally studied. The heat sources are located in a gel near the interface with polyethylene. The response in the form of the pressure oscillations occurs as a result of the thermoelastic strain of the polyethylene layer by its thickness-nonuniform heating by a thermal wave. The obtained results can be useful for modification of the techniques based on the diffusion processes in gels.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784221020043