Nonlinear response to probe vitrification

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P3 Voigtmann/Fuchs, DLR Köln und Universität Konstanz

Nonlinear mechanical response of supercooled melts under applied forces

The nonlinear response of supercooled, glass-forming melts under force-driven inhomogeneous
flow is studied using an integration-through-transients approach combined with modecoupling-
theory approximations and using mesoscopic lattice-Boltzmann simulations. Pressuredriven
flow through channels will be analyzed with both methods, allowing to investigate far from
equilibrium the importance of visco-elastic, retarded and non-local memory effects in the structural
relaxation, and the nonlinear yielding behavior in glass-forming liquids.