Physics Colloquium
Friday, April 30th, 2004 3:30 P.M.
E200 Math/Science Center
Arshad Kudrolli
Clark University
We will discuss self-organization of granular materials as a result of
shape anisotropy or magnetic interactions. While granular materials come
in all shapes and sizes, most of the studies so far have focused on the
properties of spherical non-cohesive particles. In this talk, we will
examine examples beyond this simplest situation. Novel anisotropy driven
vortex patterns and dynamics are observed in granular rods. Magnetized
particles are observed to self-assemble to form chains, rings and other
clusters depending on applied conditions. High speed-imaging and
processing is extensively used to obtain quantitative measurements of
these properties and develop models of the observed phenomena.
|
