Aging and effective delays in colloidal glasses under shear
| dc.creator | Viasnoff, Virgile | |
| dc.creator | Lequeux, Francois | |
| dc.date | 2003-05-16 | |
| dc.date.accessioned | 2026-07-07T02:51:22Z | |
| dc.date.available | 2026-07-07T02:51:22Z | |
| dc.description | In this paper we analyze the changes in the microscopic dynamics of a colloidal glass submitted to an oscillatory shear. We use Multispeckle diffusing Wave Spectroscopy to monitor the transient dynamical regimes following a shear application. We show that the system displays a spontaneous aging that is amplified by a low amplitude oscillation (overaging) but stopped by a high amplitude one (rejuvenation). Intermediate amplitudes drive the system into a dynamical state that cannot be reached through spontaneous evolution. We demonstrate that theses systems present a weak long term memory and that the all observed phenomenology can be explained by a broadening of the relaxation time distribution under oscillatory strain. We discussed the similarities of our results with the behavior of spin glasses upon temperature shifts. We eventually propose a scenario based on the existence of harder and softer regions in the material. | |
| dc.description | Submitted to PRE | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0305389 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0305389 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/21429 | |
| dc.subject | Soft Condensed Matter | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Aging and effective delays in colloidal glasses under shear | |
| dc.type | text |