We discuss features of simple inter-particle potentials which are able to generate low-packing fraction arrested states, i.e. gels, in the absence of a macroscopic phase separation phenomenon. We suggest that the ratio between surface and bulk free energy is crucial in favoring ideal gel states. Two possible models for gels, one based on the competition of short range attraction and long range repulsions and the other on local constraints disfavoring packed local structures are discussed. © 2005 Elsevier B.V. All rights reserved.

Routes to colloidal gel formation / Sciortino, Francesco; Sergey V., Buldyrev; DE MICHELE, Cristiano; Giuseppe, Foffi; Neda, Ghofraniha; Emilia La, Nave; Angel, Moreno; Stefano, Mossa; Ivan Saika, Voivod; Tartaglia, Piero; Emanuela, Zaccarelli. - In: COMPUTER PHYSICS COMMUNICATIONS. - ISSN 0010-4655. - STAMPA. - 169:1-3(2005), pp. 166-171. (Intervento presentato al convegno Proceedings of the Europhysics Conference on Computational Physics 2004 CCP 2004 nel 1 September 2004 through 4 September 2004) [10.1016/j.cpc.2005.03.038].

Routes to colloidal gel formation

SCIORTINO, Francesco;DE MICHELE, CRISTIANO;TARTAGLIA, Piero;
2005

Abstract

We discuss features of simple inter-particle potentials which are able to generate low-packing fraction arrested states, i.e. gels, in the absence of a macroscopic phase separation phenomenon. We suggest that the ratio between surface and bulk free energy is crucial in favoring ideal gel states. Two possible models for gels, one based on the competition of short range attraction and long range repulsions and the other on local constraints disfavoring packed local structures are discussed. © 2005 Elsevier B.V. All rights reserved.
2005
colloids; gels; glasses
01 Pubblicazione su rivista::01a Articolo in rivista
Routes to colloidal gel formation / Sciortino, Francesco; Sergey V., Buldyrev; DE MICHELE, Cristiano; Giuseppe, Foffi; Neda, Ghofraniha; Emilia La, Nave; Angel, Moreno; Stefano, Mossa; Ivan Saika, Voivod; Tartaglia, Piero; Emanuela, Zaccarelli. - In: COMPUTER PHYSICS COMMUNICATIONS. - ISSN 0010-4655. - STAMPA. - 169:1-3(2005), pp. 166-171. (Intervento presentato al convegno Proceedings of the Europhysics Conference on Computational Physics 2004 CCP 2004 nel 1 September 2004 through 4 September 2004) [10.1016/j.cpc.2005.03.038].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/361687
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