Volume 72, Number 6, December 2005
|Page(s)||1032 - 1038|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||25 November 2005|
Structure and relaxation dynamics of a colloidal gel
Dipartimento di Scienze Fisiche, Università di Napoli “Federico II” 80125 Napoli, Italy
2 Laboratoire des Colloïdes, Verres et Nanomatériaux, Université Montpellier 2 34095 Montpellier, France
Accepted: 21 October 2005
Using molecular dynamics computer simulations, we investigate the structural and dynamical properties of a simple model for a colloidal gel at low volume fraction. We find that at low T the system forms an open percolating cluster, without any sign of phase separation. The nature of the relaxation dynamics strongly depends on the length scale/wave vector considered and can be directly related to the geometrical properties of the spanning cluster.
PACS: 82.70.Gg – Gels and sols / 82.70.Dd – Colloids / 64.70.Pf – Glass transitions
© EDP Sciences, 2005
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