| | |
| | |
Stat |
Members: 3645 Articles: 2'500'096 Articles rated: 2609
18 April 2024 |
|
| | | |
|
Article overview
| |
|
Aging and effective delays in colloidal glasses under shear | Virgile Viasnoff
; Francois Lequeux
; | Date: |
16 May 2003 | Subject: | Soft Condensed Matter; Disordered Systems and Neural Networks | cond-mat.soft cond-mat.dis-nn | Abstract: | 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. | Source: | arXiv, cond-mat/0305389 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |