title: Aging of a colloidal glass under a periodic shear.
abstract: The aging dynamics under a periodic shear of a concentrated suspension of saponite particles is measured. It is observed that the dynamics is fastened by the application of a moderate shear amplitude. Nevertheless, this acceleration does not affect the dynamics of the suspension when the shear is ceased. By applying a succession of shear of various amplitudes, we conclude that the dynamics of the suspension at a time t(w) after complete rejuvenation is independent of the shear history between times 0 and t(w) , as soon as the amplitude of the applied shear is smaller than the characteristic shear gamma(c) necessary to completely rejuvenate the suspension.
authors.affiliation: IPCMS, UMR 7504, Strasbourg, France.
authors.forename: Soulaimane
authors.initials: S
authors.lastname: Kaloun
authors.forename: Mohammed
authors.initials: M
authors.lastname: Skouri
authors.forename: Alexandra
authors.initials: A
authors.lastname: Knaebel
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Münch
authors.forename: Pascal
authors.initials: P
authors.lastname: Hébraud