Phys. Rev. Lett. 90, 178301 (2003) [4 pages]Giant Stress Fluctuations at the Jamming TransitionReceived 6 December 2002; published 29 April 2003 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. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.178301
DOI:
10.1103/PhysRevLett.90.178301
PACS:
82.70.Dd, 83.60.Rs, 83.80.Hj
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