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Study of the growth of fractal-like interfaces in porous media by use of the speckle-correlometric technique
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Paper Abstract

The behavior of interfaces between liquid and gaseous phases in the course of non-stationary mass transfer in the porous media is studied by use of correlation and spectral analysis of spatial-temporal fluctuations of speckles induced due to laser light scattering by the probed medium. The following types of interface growth in the porous media are considered: the development of global boundaries between gaseous and liquid phases in the course of liquid evaporation from the porous layers and the development of interfaces driven by capillary forces in the porous layers. Some peculiarities of light scattering in the porous media with growing interfaces such as the anomalous behavior of the power spectra of speckle intensity fluctuations and manifestation of avalanches in the course of interface pinning are discussed. Various approaches to processing of the light scattering data are considered. Possible applications of these phenomena for porous media characterization are outlined.

Paper Details

Date Published: 28 May 2004
PDF: 12 pages
Proc. SPIE 5330, Complex Dynamics, Fluctuations, Chaos, and Fractals in Biomedical Photonics, (28 May 2004); doi: 10.1117/12.531328
Show Author Affiliations
Dmitry A. Zimnyakov, Saratov State Univ. (Russia)
Pavel V. Zakharov, Saratov State Univ. (Russia)
Valery V. Tuchin, Saratov State Univ. (Russia)

Published in SPIE Proceedings Vol. 5330:
Complex Dynamics, Fluctuations, Chaos, and Fractals in Biomedical Photonics
Valery V. Tuchin, Editor(s)

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