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Previous Research
Research at the Haverford Nonlinear Physics Laboratory with Jerry Gollub: We measured frictional forces and imaged particle motion in an air-fluidized granular material that is subjected to shear. In collaboration with Lyderic Bocquet (ENS-Lyon) and Tom Lubensky (University of Pennsylvania) we have developed a locally Newtonian, continuum model of granular flow . In collaboration with Jean-Christophe Geminard, a visitor from ENS-Lyon, we investigated friction in dry and in wet granular materials. David Cooper, a Haverford senior and I found a fascinating propagating front which develops in vertically vibrated granular materials below 1g acceleration. In measurements of the velocity statistics of an excited granular medium we found non-Gaussian velocity distributions in agreement with recent theories.
Thesis research at CCNY: I investigated the origin of patterns that appear in alloys when grown from a melt. Understanding the physics behind these patterns should help in the development of new alloys and alloy processing techniques, since the strength of the alloy strongly depends on this concentration microstructure. I developed a new perturbation technique that allows for measurements of the response of a growing solid to spatially periodic perturbations. Send comments to wlosert@glue.umd.edu . Last updated: 5/15/2005 |