One-dimensional cluster growth and branching gels in colloidal systems with short-range depletion attraction and screened electrostatic repulsion

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dc.creatorSciortino, Francesco
dc.creatorTartaglia, Piero
dc.creatorZaccarelli, Emanuela
dc.date2005-05-18
dc.date2005-06-07
dc.date.accessioned2026-07-07T06:24:00Z
dc.date.available2026-07-07T06:24:00Z
dc.descriptionWe report extensive numerical simulations of a simple model for charged colloidal particles in suspension with small non-adsorbing polymers. The chosen effective one-component interaction potential is composed of a short-range attractive part complemented by a Yukawa repulsive tail. We focus on the case where the screening length is comparable to the particle radius. Under these conditions, at low temperature, particles locally cluster into quasi one-dimensional aggregates which, via a branching mechanism, form a macroscopic percolating gel structure. We discuss gel formation and contrast it with the case of longer screening lengths, for which previous studies have shown that arrest is driven by the approach to a Yukawa glass of spherical clusters. We compare our results with recent experimental work on charged colloidal suspensions [A. I. Campbell {\it et al.} cond-mat/0412108, Phys. Rev. Lett. in press].
dc.description14 pages, 25 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0505453
dc.identifierhttp://arxiv.org/abs/cond-mat/0505453
dc.identifierJ. Phys. Chem. B 109, 21942 (2005)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96403
dc.subjectSoft Condensed Matter
dc.subjectDisordered Systems and Neural Networks
dc.titleOne-dimensional cluster growth and branching gels in colloidal systems with short-range depletion attraction and screened electrostatic repulsion
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