Dynamics in Colloidal Liquids near a Crossing of Glass- and Gel-Transition Lines

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dc.creatorSperl, M.
dc.date2003-08-21
dc.date.accessioned2026-07-07T02:53:02Z
dc.date.available2026-07-07T02:53:02Z
dc.descriptionWithin the mode-coupling theory for ideal glass-transitions, the mean-squared displacement and the correlation function for density fluctuations are evaluated for a colloidal liquid of particles interacting with a square-well potential for states near the crossing of the line for transitions to a gel with the line for transitions to a glass. It is demonstrated how the dynamics is ruled by the interplay of the mechanisms of arrest due to hard-core repulsion and due to attraction-induced bond formation as well as by a nearby higher-order glass-transition singularity. Application of the universal relaxation laws for the slow dynamics near glass-transition singularities explains the qualitative features of the calculated time dependence of the mean-squared displacement, which are in accord with the findings obtained in molecular-dynamics simulation studies by Zaccarelli et. al [Phys. Rev. E 66, 041402 (2002)]. Correlation functions found by photon-correlation spectroscopy in a micellar system by Mallamace et. al [Phys. Rev. Lett. 84, 5431 2000)] can be interpreted qualitatively as a crossover from gel to glass dynamics.
dc.description13 pages, 12 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0308425
dc.identifierhttp://arxiv.org/abs/cond-mat/0308425
dc.identifierPhys. Rev. E 69, 011401 (2004)
dc.identifierdoi:10.1103/PhysRevE.69.011401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22059
dc.subjectSoft Condensed Matter
dc.titleDynamics in Colloidal Liquids near a Crossing of Glass- and Gel-Transition Lines
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