Speckle correlometry visualization of imbibition front

Pavel V. Zakharov; D. A. Zimnyakov

doi:10.1117/12.518493

23 September 2003 Speckle correlometry visualization of imbibition front

Pavel V. Zakharov, D. A. Zimnyakov

Author Affiliations +

Proceedings Volume 5067, Saratov Fall Meeting 2002: Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III; (2003) https://doi.org/10.1117/12.518493
Event: Saratov Fall Meeting 2002 Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III, 2002, Saratov, Russian Federation

Abstract

Laser speckle correlometry was used to study interphase boundary development in paper sheet. The active imbibition area was clearly defined and observed for all samples by higher rate of speckle intensity fluctuations. In some cases wetting of paper lead to formation of rough front which static shape and dynamics of the motion shows considerable complexity. This effect comes out from randomness in porous system and existence of macroscopic obstacles that require additional pressure to be overpassed.

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Pavel V. Zakharov and D. A. Zimnyakov "Speckle correlometry visualization of imbibition front", Proc. SPIE 5067, Saratov Fall Meeting 2002: Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III, (23 September 2003); https://doi.org/10.1117/12.518493

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