The Department of Physics welcomes Amy Graves, the Walter Kemp Professor in the Natural Sciences in the Department of Physics and Astronomy at Swarthmore College.
Abstract: Granular Materials are ubiquitous in daily life. By "granular" we mean not only hard objects like salt, rice or sand; but also soft objects like bubbles, and living entities like cells and pedestrians. Dense granular materials can behave dramatically by suddenly solidifying into a disorderly "jammed" structure. Much has been learned about jammed solids in last two decades. Our group at Swarthmore has been using computer simulations to ask what is new and different about jamming when the mobile grains are in contact with a fixed framework, like a lattice of diminutive obstacles, or "pins." These pins influence when a sudden transition occurs in a granular packing, and affect the structure and mechanical properties of the jammed solid which forms. Our work is both theory-rich and highly practical; with applications like utilizing obstacles for the prevention of jamming of particles or people and making new jammed materials which are more elastic and less bulky.
All talks begin promptly at 12:10 p.m. Lunch will be served from 11:50 a.m. to 12:10 p.m.
Friday, December 6, 2019 at 12:10pm to 1:00pm
Hayes Hall, 211/213
201 North College Road, Gambier, OH 43022