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Jamming Threshold of Dry Fine Powders


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Author: Valverde Millán, José Manuel
Sánchez Quintanilla, Miguel Angel
Castellanos Mata, Antonio
Department: Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Date: 2004
Published in: Physical review letters, 92, 25, 258303-1-258303-4
Document type: Article
Abstract: We report a novel experimental study on the jamming transition of dry fine powders with controlled attractive energy and particle size. Like in attractive colloids dry fine particles experience diffusionlimited clustering in the fluidlike regime. At the jamming threshold fractal clusters crowd in a metastable state at volume fractions depending on attractive energy and close to the volume fraction of hard nonattractive spheres at jamming. Near the phase transition the stress-(volume fraction) relationship can be fitted to a critical-like functional form for a small range of applied stresses J) as measured on foams, emulsions, and colloidal systems and predicted by numerical simulations on hard spheres.
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DOI: 10.1103/PhysRevLett.92.258303

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