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NEW YORK UNIVERSITY MRSEC

“Granocentric” view of Random Packing Michael Ward, New York University, DMR 0820341.

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NEW YORK UNIVERSITY MRSEC

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  1. “Granocentric” view of Random Packing Michael Ward, New York University, DMR 0820341 • Random packings of polydisperse spheres, characterized by confocal microscopy, form the basis of a local statistical model that can describe all the properties of the packing: distributions of contacting and neighboring particles, local densities and the global density. • Our model considers packing from the perspective of a particle within it, which we coin the “granocentric” view. This approach captures the effect of the particle size distribution on the structure and geometry of packings and predicts the density of the material. • Relevant to industries that use particulate materials, including oil extraction through porous rocks, grain storage in silos and the compaction of pharmaceutical powders into tablets. • Article featured in Nature magazine • Supported by the MRSEC, DMR-0820341 NEW YORK UNIVERSITY MRSEC

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