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Glassy dynamics and flow properties of soft colloidal pastes
Michel Cloitre1, Régis Borrega, Fabrice Monti
1Laboratoire Matière Molle et Chimie, UMR 167, CNRS/ESPCI/ATOFINA, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex, France.
Physical Review Letters
|March 14, 2003
Abstract:
The local dynamics and the nonlinear rheology of soft colloidal pastes are shown to exhibit a remarkable universal behavior in terms of a unique microscopic time scale. This variable is associated with structural relaxation under the combined action of local frictional forces and elastic driving forces. These results establish a link between the local dynamics of pastes and their nonlinear flow behavior and provide a unified description of paste rheology.