Şenbil, Nesrin Gruber, Markus Zhang, Chi Fuchs, Matthias Scheffold, Frank 2019-03-13 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 their distributions. Our experiments reveal intermittent dynamics around a depinning transition at a threshold force. For smaller forces, linear response connects mean displacement, and quiescent mean squared displacement. Mode coupling theory calculations rationalize the observations. application/pdf https://folia.unifr.ch/global/documents/307837 https://folia.unifr.ch/documents/307837/files/sch_osh.pdf https://folia.unifr.ch/documents/307837/files/sch_osh_sm.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.122.108002 info:eu-repo/semantics/openAccess License undefined Physical Review Letters. - 2019, vol. 122, no. 10, p. 108002 info:eu-repo/classification/udc/53 Observation of strongly heterogeneous dynamics at the depinning transition in a colloidal glass http://purl.org/coar/resource_type/c_6501