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Nanoscale Res Lett. 2012 Jul 23;7(1):411. doi: 10.1186/1556-276X-7-411.

Photoacoustic effects in nanocomposite structure 'porous silicon-liquid'.

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  • 1Faculty of Physics, Taras Shevchenko National University of Kyiv, 64, Volodymyrs'ka St,, Kyiv, 01601, Ukraine. isaev@univ.kiev.ua.

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.

PMID:
22823996
[PubMed]
PMCID:
PMC3493271
Free PMC Article

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