The Complex Matter and Nonlinear Physics Laboratory at

Department of Physics Members of the Lab Research Emphasis Granular Matter Quantum Chaos Biological Physics Publications Movies Former Collaborators Press Lab Home Page Granular Materials Workshop at Clark Complex Fluids Workshop at Clark Place to unwind

Internal imaging of dense granular solids We measured the random packing fraction of the Platonic solids, and imaged the packing with newly acquired x-ray CT machine. more. Using a novel fluoroscent index matching technique, we show that the fluctuations in granular flows are remarkably similar to that observed in a dense liquids. more. Friction of a slider on a granular layer: Nonmonotonic thickness dependence and effect of boundary conditions Cohesive strength of wet grains We explain the increased stability of a wet granular pile with a new liquid bridge model. A copy of the Nature Physics paper can be downloaded here. See related News and Views, and Cover Story. Dynamics of a bouncing dimer Particle shape is observed to have a strong impact on the dynamics of granular materials. more Spontaneous vortex motion in anisotropic granular materials movies Flow of Granular Matter Image of granular matter draining from a silo. more

Capillary aggregation observed in particles floating at a liquid-air interface. Particle colors correspond to shape of associated Voronoi cell. movies. Inside Science Story. Lab Research on PRL Covers Self-propelled particles Geometry of crumpled paper Geomorphology: Physics of channelization more Failure of a granular step more Pattern Formation in Bacterial Colonies: Living on the Edge Bacillus Subtilis colonies form a ring when irradiated with ultraviolet light. more Also read story in , and , New Scientist. Self-assembing chains, rings and droplets in magnetized granular fluids more

Work supported by Research Corporation, Petroleum Research Fund, Alfred P. Sloan Foundation, Department of Energy, and National Science Foundation.

Last updated December 10, 2010