Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2009-11-06
Physical Review E 80, 021302 (2009)
Physics
Condensed Matter
Soft Condensed Matter
10 pages, 9 figures
Scientific paper
10.1103/PhysRevE.80.021302
The microstructure of coagulated colloidal particles, for which the inter-particle potential is described by the DLVO theory, is strongly influenced by the particles' surface potential. Depending on its value, the resulting microstructures are either more "homogeneous" or more "heterogeneous", at equal volume fractions. An adequate quantification of a structure's degree of heterogeneity (DOH) however does not yet exist. In this work, methods to quantify and thus classify the DOH of microstructures are investigated and compared. Three methods are evaluated using particle packings generated by Brownian dynamics simulations: (1) the pore size distribution, (2) the density fluctuation method and (3) the Voronoi volume distribution. Each method provides a scalar measure, either via a parameter in a fit function or an integral, which correlates with the heterogeneity of the microstructure and which thus allows for the first time to quantitatively capture the DOH of a granular material. An analysis of the differences in the density fluctuations between two structures additionally allows for a detailed determination of the length scale on which differences in heterogeneity are most pronounced.
Aste Tomaso
Filser Frank T.
Gauckler Ludwig J.
Herrmann Hans Jürgen
Schenker Iwan
No associations
LandOfFree
Quantification of the Heterogeneity of Particle Packings does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantification of the Heterogeneity of Particle Packings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantification of the Heterogeneity of Particle Packings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-391056