Skip over navigation  Granular Streams as Sensitive Probes of
Interparticle Forces  Speaker: Heinrich Jaeger, The University
of Chicago Series: CBE Departmental Seminars Location: Elgin
Room (E-Quad A224) Date/Time: Wednesday, April 10, 2013, 4:00
p.m. - 5:00 p.m.  Particle beams are important tools for probing
atomic and molecular interactions. In this talk  I demonstrate
that particle “beams” also offer a unique opportunity to
investigate interactions in granular media, a situation where
the particles are much more macroscopic. Motivated by recent
experiments on streams and jets of particles that exhibit
liquid-like breakup into droplets, we developed an experimental
set-up in which we can investigate the evolution of a dense
stream of spheres freely falling out of an opening at the bottom
of a reservoir inside a vacuum system.  Tracking individual
particles with a high-speed camera that freefalls with the
stream we can study interparticle forces typically masked by
weight, such as van der Waals forces, cap