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Updated: May 12, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
Published on: April 19, 2018
Microrheology of supercooled liquids in terms of a continuous time random walk
Carsten F E Schroer1, Andreas Heuer
1Westfälische Wilhelms-Universität Münster, Institut für Physikalische Chemie, Corrensstraße 28/30, 48149 Münster, Germany. c.schroer@uni-muenster.de
Abstract:
Molecular dynamics simulations of a glass-forming model system are performed under application of a microrheological perturbation on a tagged particle. The trajectory of that particle is studied in its underlying potential energy landscape. Discretization of the configuration space is achieved via a metabasin analysis. The linear and nonlinear responses of drift and diffusive behavior can be interpreted and analyzed in terms of a continuous time random walk. In this way, the physical origin of linear and nonlinear response can be identified. Critical forces are determined and compared with predictions from literature.
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