Diagnostics of optical diffusion in the structural characterization of foamed polymers

O. V. Ushakova; D. A. Zimnyakov

doi:10.1117/12.2625899

29 April 2022 Diagnostics of optical diffusion in the structural characterization of foamed polymers

O. V. Ushakova, D. A. Zimnyakov

Proceedings Volume 12192, Optical Technologies for Biology and Medicine; 121920C (2022) https://doi.org/10.1117/12.2625899
Event: XXV Annual Conference Saratov Fall Meeting 2021; and IX Symposium on Optics and Biophotonics, 2021, Saratov, Russian Federation

Abstract

Various approaches to the characteristics of optical diffusion of the growing polymer foams as a specific version of the multiple scattering random media with a high level of disorder are considered. These approaches include the diffuse reflectance and transmittance measurements, low-coherence reference-based reflectometry, and full-field multi-speckle correlometry. The relationship between the key parameter of optical diffusion diagnostics, such as the transport mean free path of the probe light propagation in the foams and structural properties of polymer foams are discussed. A possible influence of the optical inversion effect under the wet-to-dry transition in expanding polymer foams on the diagnostic parameters is taken into account.

Citation Download Citation

O. V. Ushakova and D. A. Zimnyakov "Diagnostics of optical diffusion in the structural characterization of foamed polymers", Proc. SPIE 12192, Optical Technologies for Biology and Medicine, 121920C (29 April 2022); https://doi.org/10.1117/12.2625899

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