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- Time Resolved Correlation: a new tool for studying temporally heterogeneous dynamics hal link

Auteur(s): Cipelletti L., Bissig Hugo, Trappe Veronique, Ballesta Pierre, Mazoyer Sylvain

(Article) Publié: Journal Of Physics: Condensed Matter, vol. 15 p.S257 (2003)
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Résumé:

We introduce a new scheme to investigate temporally heterogeneous dynamics, which is termed Time Resolved Correlation (TRC). TRC is applied to data obtained by Diffusing Wave Spectroscopy probing the slow dynamics of a strongly aggregated colloidal gel. Other examples of TRC data, collected for different jammed materials in single and multiple scattering, are provided to demonstrate the wide range of applicability of this method. In all cases we find evidence that the slow dynamics results from a series of discrete steps rather than from a continuous motion, suggesting temporal heterogeneities to be a general feature of slow dynamics in jammed systems.



Commentaires: proceedings of the 5th Liquid Matter Conference (Konstanz 2002)