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Sound generation by spheroidal metallic nanoclusters embedded in transparent matrix under the action of laser pulses

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  • N. I. Grigorchuk
  • P. M. Tomchuk

Abstract

The theory of the photo-acoustical effect caused by a laser action on metal nanoclusters embedded in a dielectric matrix is build. The energy absorbed by clusters propagates through the dielectric matrix and generates the sound waves in it via the thermodeformation mechanism. The formulae for an acoustical signal are derived, and the high sensitivity of the sound wave amplitude to the shape of metal clusters, as well to such parameters of a laser irradiation as the frequency, polarization, and intensity, is revealed. The behavior of the sound vibrations amplitude in a region of the surface plasmons absorption is studied in detail. It is found that this amplitude at light absorption by a discrete metal film (a system of clusters in the matrix) can exceed the corresponding amplitude for the absorption by a continuous metal film in the region of plasmon resonances by several orders of magnitude. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Suggested Citation

  • N. I. Grigorchuk & P. M. Tomchuk, 2011. "Sound generation by spheroidal metallic nanoclusters embedded in transparent matrix under the action of laser pulses," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 80(3), pages 371-378, April.
    • Handle: RePEc:spr:eurphb:v:80:y:2011:i:3:p:371-378
    DOI: 10.1140/epjb/e2011-20005-6
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