Sebastian Pitikaris

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Granular materials consist of macroscopic, athermal packings of particles which
only interact via dissipative contact forces. The systems can adopt different
states of aggregation depending on the external driving conditions.
The viscosity dependence of a granular fluid will be probed
by an active microrheology setup. We demonstrate access to three viscosity
regimes depending on the shear rate. In a static granular system we measure
the contact forces on grain scale and evaluate the local mechanical heterogeneities
in an amorphous and crystalline packing.

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DLR
Conference room TP 0.02
Contact: Andreas Schadschneider