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

Luca Cipelletti (1) , Hugo Bissig (2) , Veronique Trappe (2) , Pierre Ballesta (1) , Sylvain Mazoyer (1)

1 GDPC - Groupe de Dynamique des Phases Condensées
2 FRIBPHYS - Physics Department

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.

Mots clés: light scattering; intermittency; heterogeneous dynamics; glasses; jamming

Domaines: Matière Molle [cond-mat.soft]

Luca Cipelletti, Hugo Bissig, Veronique Trappe, Pierre Ballesta, Sylvain Mazoyer. Time Resolved Correlation: a new tool for studying temporally heterogeneous dynamics. Journal of Physics: Condensed Matter, 2003, 15, pp.S257. ⟨hal-00004280⟩