Evolution of the scattering anisotropy of aged foams in the wet-to-dry transition

D. A. Zimnyakov; S. A. Yuvchenko; A. A. Isaeva; E. A. Isaeva; T. V. Samorodina

doi:10.1117/12.2311474

26 April 2018 Evolution of the scattering anisotropy of aged foams in the wet-to-dry transition

D. A. Zimnyakov, S. A. Yuvchenko, A. A. Isaeva, E. A. Isaeva, T. V. Samorodina

Proceedings Volume 10717, Saratov Fall Meeting 2017: Laser Physics and Photonics XVIII; and Computational Biophysics and Analysis of Biomedical Data IV; 107171D (2018) https://doi.org/10.1117/12.2311474
Event: Saratov Fall Meeting 2017, 2017, Saratov, Russian Federation

Abstract

Empirical data on the diffuse and collimated transmittance of aged liquid foams are discussed in terms of influence of mutual correlations in the scatter positions. This influence can be described introducing the static structure factor of a scattering system and occurs remarkable in the case of wet foams with gas bubbles as the basic scattering units. On the contrary, mutual correlations of basic scattering units (Plateau-Gibbs channels and vertices) in dry foams are negligible due to low values of their volume fraction. This causes dramatic changes of the scattering anisotropy of foam layers in the vicinity of the wet-to-dry transition. Some analogies can be drawn between this effect and a previously reported "optical inversion" of densely packed random media.

Citation Download Citation

D. A. Zimnyakov, S. A. Yuvchenko, A. A. Isaeva, E. A. Isaeva, and T. V. Samorodina "Evolution of the scattering anisotropy of aged foams in the wet-to-dry transition", Proc. SPIE 10717, Saratov Fall Meeting 2017: Laser Physics and Photonics XVIII; and Computational Biophysics and Analysis of Biomedical Data IV, 107171D (26 April 2018); https://doi.org/10.1117/12.2311474

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KEYWORDS

Scattering

Foam

Anisotropy

Liquids

Transmittance

Integrating spheres

Optical properties

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