Dynamics of particles and cages in an experimental 2D glass former

Abstract

We investigate the dynamics of a glass forming 2D colloidal mixture and show the existence of collective motions of the particles. We introduce a mean square displacement MSD with respect to the nearest neighbors which shows remarkable deviations from the usual MSD quantifying the individual motion of our particles. Combined with the analysis of the self part of the Van Hove function this indicates a coupled motion of particles with their cage as well as intra cage hopping processes.

arXiv commentSubmitted to EPL

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• Local Density Fluctuation Governs the Divergence of Viscosity underlying Elastic and Hydrodynamic Anomalies in a 2D Glass-Forming Liquid
• Decoupling of translational and rotational diffusion in quasi-2D colloidal fluids
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• Nonadditive Interactions Unlock Small-Particle Mobility in Binary Colloidal Monolayers
• Enhanced Long Wavelength Mermin-Wagner Fluctuations in Active Crystals and Glasses
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• Dynamical heterogeneities as fingerprints of a backbone structure in Potts models
• Rearrangements during slow compression of a jammed two-dimensional emulsion
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