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Proceedings Paper

Sensing emulsification processes by Photon Density Wave spectroscopy
Author(s): Oliver Reich; Lena Bressel; Roland Hass
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Paper Abstract

A key parameter for the monitoring of emulsification processes is the droplet size of the dispersed material. Due to relatively high concentrations of the droplets in technical applications and their micrometer size these emulsions exhibit strong light scattering. Photon Density Wave (PDW) spectroscopy is an innovative fiber-optical in-line technique for precise determination of the optical absorption and scattering properties of such highly turbid samples. From the light scattering properties (specifically the reduced scattering coefficient) mean droplet sizes can be quantified with a temporal resolution on the minute-timescale. Investigation of the influence of emulsifier concentration and stirring speed on the emulsification process demonstrate the excellent performance of PDW spectroscopy for fiber-optical in-line sensing under these demanding spectroscopic conditions.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77532J (17 May 2011); doi: 10.1117/12.885894
Show Author Affiliations
Oliver Reich, Univ. Potsdam (Germany)
Lena Bressel, Univ. Potsdam (Germany)
Roland Hass, Univ. Potsdam (Germany)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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