Giant stress fluctuations at the jamming transition

We study the stress response to a steady imposed shear rate in a concentrated suspension of colloidal particles. We show that, in a small range of concentrations and shear rates, stress exhibits giant fluctuations. The amplitude of these fluctuations obeys a power-law behavior, up to the apparition...

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Bibliographic Details
Published inPhysical review letters Vol. 90; no. 17; p. 178301
Main Authors Lootens, Didier, Van Damme, Henri, Hébraud, Pascal
Format Journal Article
LanguageEnglish
Published United States 02.05.2003
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Summary:We study the stress response to a steady imposed shear rate in a concentrated suspension of colloidal particles. We show that, in a small range of concentrations and shear rates, stress exhibits giant fluctuations. The amplitude of these fluctuations obeys a power-law behavior, up to the apparition of a new branch of flow, leading to an excess of high amplitude fluctuations which exhibit a well-defined periodicity.
ISSN:0031-9007
DOI:10.1103/physrevlett.90.178301