Nano Express

Nanoscale Research Letters

, 7:411

Open Access This content is freely available online to anyone, anywhere at any time.

Photoacoustic effects in nanocomposite structure ‘porous silicon-liquid’

  • Dmitriy AndrusenkoAffiliated withFaculty of Physics, Taras Shevchenko National University of Kyiv
  • , Mykola IsaievAffiliated withFaculty of Physics, Taras Shevchenko National University of Kyiv Email author 
  • , Andrey KuzmichAffiliated withFaculty of Physics, Taras Shevchenko National University of Kyiv
  • , Vladimir LysenkoAffiliated withInstitut des Nanotechnologies de Lyon (INL), UMR-5270, CNRS, INSA de Lyon, Universitй de Lyon, bat
  • , Roman BurbeloAffiliated withFaculty of Physics, Taras Shevchenko National University of Kyiv

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