Colloidal gelation, percolation and structural arrest

A. de Candia, E. Del Gado, A. Fierro, N. Sator and A. Coniglio

Physica A: Statistical Mechanics and its Applications, 2005, vol. 358, issue 2, 239-248

Abstract: By means of molecular dynamics, we study a model system for colloidal suspensions where the interaction is based on a competition between attraction and repulsion. At low temperatures the relaxation time first increases as a power law as a function of the volume fraction and then, due to the finite lifetime of the bonded structures, it deviates from this critical behavior. We show that colloidal gelation at low temperatures and low volume fractions is crucially related to the formation of a spanning long living cluster. Besides agreeing with experimental findings in different colloidal systems, our results shed new light on the different role played by the formation of long living bonds and the crowding of the particles in colloidal structural arrest.

Keywords: Colloidal gelation; Cluster phase; Percolation (search for similar items in EconPapers)
Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:358:y:2005:i:2:p:239-248

DOI: 10.1016/j.physa.2005.07.003

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