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Special ICMT/Condensed Matter Seminar: "Getting jamming into shape"

SpeakerDr. Matthias Schroeter, Max Planck Institute, Goettingen, Germany
Date Mar 26, 2013
Time 1:00 pm  
Location 190 Engineering Sciences Building
Sponsor Department of Physics, ICMT
Contact Becky McDuffee
Phone 217-244-4268
Event type Other
Views 954


Granular matter is often taken to be part of the class of soft matter
systems whose mechanical properties are well described by the jamming
paradigm. However, emulsions, foams, and colloids are in a first
approximation frictionless spheres. This differs for most granular
materials like sand, snow, salt or sugar; they are not comprised of
spherical particles and definitely possess surface friction.

This talk will discuss in which way granular matter deviates from the
classical jamming paradigm. X-ray tomography (in-house and at the ESRF
synchrotron in Grenoble) allows us to measure the geometrical properties
of packings o frictional spheres and tetrahedra and relate those to
mechanical properties like mechanical stability and dilatancy onset.


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