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    Université de Fribourg

    Observation of strongly heterogeneous dynamics at the depinning transition in a colloidal glass

    Şenbil, Nesrin ; Gruber, Markus ; Zhang, Chi ; Fuchs, Matthias ; Scheffold, Frank

    In: Physical Review Letters, 2019, vol. 122, no. 10, p. 108002

    We study experimentally the origin of heterogeneous dynamics in strongly driven glass-forming systems. Thereto, we apply a well-defined force with a laser line trap on individual colloidal polystyrene probe particles seeded in an emulsion glass composed of droplets of the same size. Fluid and glass states can be probed. We monitor the trajectories of the probe and measure displacements and...