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Low density fragile states in cohesive powders

Paul B. Umbanhowar, Daniel I. Goldman

cond-mat.softarXiv:cond-mat/0512637

Abstract

We discuss the difference between cohesive and non-cohesive granular media in the context of a recent report of "dry quicksand." Weak low density states with properties like dry quicksand are readily formed in common household powders. In contrast, such states cannot be formed in cohesionless granular media such as ordinary sand.

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