Abstract

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.

中文翻译：

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两层聚合物/凝胶结构的光声响应的产生

摘要

已经通过实验研究了层状聚乙烯/水凝胶结构通过用周期性调制的光照射而产生的光声响应的产生过程。热源位于与聚乙烯的界面附近的凝胶中。由于聚乙烯层由于热波引起的厚度不均匀加热而产生热弹性应变，因此产生了压力振荡形式的响应。所获得的结果对于基于凝胶中的扩散过程的技术改进可能是有用的。