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14 August 2006 Dynamic optical coherence tomography for paper wetting measurements
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Abstract
This paper introduces a novel optical method to measure liquid penetration into porous, highly scattering media. Testing was conducted by measuring the sorption of glycerol into a paper sample consisting of cellulose fibre tissue with a grammage of 115 g m-2. During wetting, optical coherence tomography (OCT) was used to detect dynamical changes in the sample's scattering properties. Distinguishing the border between the dry and the wetted area on the basis of separate A-scans was a challenging task. However, wetting behaviour could be investigated in the depth direction simply by constructing a composite image of the separate scans. In addition, the method also allowed the imaging of swelling behaviour in paper.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tapio Fabritius and Risto Myllylä "Dynamic optical coherence tomography for paper wetting measurements", Proc. SPIE 6293, Interferometry XIII: Applications, 629307 (14 August 2006); https://doi.org/10.1117/12.680201
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