Open AccessОптоакустический генератор ультразвука на основе структуры с таммовским плазмоном и органическим активным слоем
Author(s) -
Е.И. Гиршова,
Е.П. Микитчук,
А.В. Белоновский,
К.М. Морозов,
К.А. Иванов
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.07.50793.18635
Subject(s) - materials science , polydimethylsiloxane , transducer , ultrasonic sensor , laser , energy conversion efficiency , layer (electronics) , optoelectronics , energy harvesting , optics , thermal , generator (circuit theory) , acoustics , energy (signal processing) , composite material , power (physics) , statistics , physics , mathematics , quantum mechanics , meteorology
Currently, a new class of ultrasound generators is being actively developed, based on the conversion of optical energy of laser radiation into ultrasonic mechanical vibrations. It was shown theoretically that an efficient optoacoustic generator can be realized using a structure with a Tamm plasmon as an active medium. This article discusses the improvement of such an optoacoustic generator by adding a layer of organic material (polydimethylsiloxane), which has an extremely high coefficient of thermal expansion. Modeling of the properties of the structure was carried out, which showed that the use of polydimethylsiloxane as an additional layer of the structure of an optoacoustic transducer is expedient at frequencies up to 50 MHz. It was also shown that the addition of an organic layer leads to an increase in the efficiency of optoacoustic conversion by 4 orders of magnitude.