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Open Access Nano Express

Photoacoustic effects in nanocomposite structure ‘porous silicon-liquid’

Dmitriy Andrusenko1, Mykola Isaiev1*, Andrey Kuzmich1, Vladimir Lysenko2 and Roman Burbelo1

Author affiliations

1 Faculty of Physics, Taras Shevchenko National University of Kyiv, 64, Volodymyrs'ka St., Kyiv, 01601, Ukraine

2 Institut des Nanotechnologies de Lyon (INL), UMR-5270, CNRS, INSA de Lyon, Universitй de Lyon, bat. Blaise Pascal, 7 Av. Jean Capelle, Villeurbanne, 69621, France

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Citation and License

Nanoscale Research Letters 2012, 7:411  doi:10.1186/1556-276X-7-411

Published: 23 July 2012

Abstract

Photoacoustic effect in nanocomposite structure ‘porous silicon-liquid’ has been investigated. Main mechanisms involved in the formation of photoacoustic signal in such structures have been experimentally studied. Liquids with different viscosity (ethanol and acetone) filling the nanopores have been used. A proposed mathematical model describing the photoacoustic signal formation was found to be in good agreement with the experimental results. The role of thermally induced pressures provoked by the liquids confined inside the nanopores in the photoacoustic process has been analyzed.

Keywords:
Porous silicon; Photoacoustic and photothermal phenomena; Nanocomposite structures