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|Title:||Optoacoustical Transducer Based on Plasmonic Nanoparticles|
|Authors:||Belotelov, V. I.|
Kalish, A. N.
Knyazev, G. A.
Nguen, E. T. T.
Romanov, O. G.
Tolstik, A. L.
|Keywords:||ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика|
|Citation:||Nonlinear Phenomena in Complex Systems, vol. 22, no. 1 (2019), pp. 55 - 63|
|Abstract:||The problem of increasing the eﬃciency of optoacoustic conversion of energy is discussed. For this task, an array of metal nanoparticles is proposed to apply as a photoacoustic transducer. The absorption coeﬃcient of optical energy can be signiﬁcantly increased due to the presence of resonance lines in the absorption spectrum of the nanoparticle structure. The task of design of a spatially non-uniform absorbing optoacoustic transducer has also been studied. The application of non-uniformly absorbing transducers provides generation of acoustic pulses with a non-uniform phase front, including acoustic vortices. The optical properties of the nanoparticle array, the initial temperature proﬁle in a single particle and the dynamics of the generated acoustic wave were calculated.|
|Appears in Collections:||Кафедра лазерной физики и спектроскопии|
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