Linking Particle Dynamics to Local Connectivity in Colloidal Gels

Physical Review Letters
Jan Maarten van DoornJ Sprakel

Abstract

Colloidal gels are a prototypical example of a heterogeneous network solid whose complex properties are governed by thermally activated dynamics. In this Letter we experimentally establish the connection between the intermittent dynamics of individual particles and their local connectivity. We interpret our experiments with a model that describes single-particle dynamics based on highly cooperative thermal debonding. The model, in quantitative agreement with experiments, provides a microscopic picture for the structural origin of dynamical heterogeneity in colloidal gels and sheds new light on the link between structure and the complex mechanics of these heterogeneous solids.

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Citations

Jan 27, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Moumita Maiti, Michael Schmiedeberg
Mar 28, 2019·The European Physical Journal. E, Soft Matter·Moumita Maiti, Michael Schmiedeberg
Jun 5, 2018·Physical Review Letters·Jan Maarten van DoornJasper van der Gucht
Mar 14, 2020·Physical Review Letters·Jae Hyung ChoIrmgard Bischofberger
May 20, 2018·Physical Review. E·Armand BarbotSylvain Patinet
Sep 19, 2020·Physical Review. E·Joep RouwhorstAlessio Zaccone
Jul 18, 2020·Nature Communications·Joep RouwhorstPeter Schall
Jul 10, 2021·The Journal of Chemical Physics·M Gimperlein, M Schmiedeberg
Jul 16, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Minaspi BantawaEmanuela Del Gado
Aug 20, 2020·ACS Applied Materials & Interfaces·Qimeng WuJasper van der Gucht
Oct 6, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Yuehua ZhaoDapeng Wang

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