Physics Colloquium - Fall 2005 - Jamming and the Low-Temperature Properties of Glasses
Dept of Physics & Astronomy
University of Maine, Orono, Maine
Presents
Dr. Sidney Nagel
Stein-Freiler Distinguished Service Professor
Department of Physics
University of Chicago
Jamming and the Low-Temperature Properties of Glasses
The transition in which a disordered material becomes rigid encompasses a wide range of phenomena, from the liquid-glass transition to the onset of flow in granular materials and colloidal dispersions. This talk will pose the question: Can the different ways of creating a rigid solid be profitably thought of as being part of the same phenomenon? That is, does jamming in a granular material and glass formation in a molecular liquid share features in common? I will argue that one can learn from granular materials about the properties of glasses (and vice versa). An understanding of the origin of these commonalities may shed light on describing problems as diverse as force propagation through amorphous packings, dynamical heterogeneities in supercooled liquids, and the nature of the low-lying energy states of glasses. I will analyze the properties of the marginally jammed state and describe what might be a structural signature of jamming.
Friday, September 30, 2005
3:10 pm
140 Bennett Hall
Refreshments will follow in Rm. 114, Bennett Hall
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