University of Oulu

Juttula, H.J., Törmänen, M. & Mäkynen, A.J. Predicting scattering properties of fiber suspensions using Mie theory and probabilistic cross-sectional diameter of fibers. Opt Rev 27, 225–232 (2020).

Predicting scattering properties of fiber suspensions using Mie theory and probabilistic cross-sectional diameter of fibers

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Author: Juttula, Harri J.1; Törmänen, Matti2; Mäkynen, Anssi J.3
Organizations: 1Unit of Measurement Technology, University of Oulu, P.O.Box 127, 87400 Kajaani, Finland
2Valmet Automation Inc., Elektroniikkatie 9, 90590 Oulu, Finland
3Optoelectronics and Measurement Techniques Unit, University of Oulu, P.O.Box 4500, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.1 MB)
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Language: English
Published: Springer Nature, 2020
Publish Date: 2020-02-21


Scattering of visible light by micrometer-scale natural wood fibers is usually treated by assuming fibers to be perfect long cylindrical scatterers. In industrial processes, however, fibers experience deformations and are far from ideal cylinders. Variation in fiber morphology affects their scattering properties and it poses a challenge for reliable process measurements. In this paper, we have studied experimentally scattering of both deformed natural and ideal artificial non-absorbing fibers in aqueous suspension and their response to mass concentration of fibers. Experimental results are compared with the predictions of the Mie theory which is combined with cross-sectional diameter probability distribution of fibers. It is shown that the diameter distribution of the fibers together with Mie theory provides results that agree with experiments in case of both natural and ideal fibers.

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Series: Optical review
ISSN: 1340-6000
ISSN-E: 1349-9432
ISSN-L: 1340-6000
Volume: 27
Pages: 225 - 232
DOI: 10.1007/s10043-020-00581-0
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
215 Chemical engineering
Funding: Open access funding provided by University of Oulu including Oulu University Hospital.
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