Conference Report: International Workshop Dispersion
Analysis and Materials Testing, September 2016, Berlin, Germany by Dr.-Ing. Hildegard Lyko, free-lanced journalist
Extract from the full report:
Particle characterization
Analytical centrifugation with measuring time- and position resolved light transmission delivers extinction weighted size distributions of the particles’ Stokes diameters. A cooperation project of TU Dresden, LUM and Doshisha University in Kyoto, Japan (Prof. Yasushige Mori) aimed at developing a transformation method from extinction weighted to volume or number weighted size distributions, which does not refer to a model that describes the optical behaviour of particles (e.g. Mie theory). As Dr. Frank Babick, TU Dresden, pointed out, this transformation can successfully be made by applying multi-wavelength analysis of photo-centrifugation data. Promising results were obtained with mineral materials SiO2, Al2O3, TiO2 as well as with Au. However, there seem to be materials, with which this transformation method without knowing the refractive index is not applicable..
Julia…