Almost any system composed of discrete pieces large enough that thermal fluctuations can be ignored can have a jamming transition: a point at which fluid flow is impeded by a change of state into a stable amorphous solid. The behavior is general enough to explain a pile of sand, a jar of candies, or cars in a traffic jam. Professor Andrea Liu was involved in recent theoretical breakthroughs in the study of this phenomenon.
Outreach Effort for Penn Physics and Astronomy
At the Penn Summer Science Academy (PSSA) students listen to a lecture, delivered from CERN by Professor Elliot Lipeles, on the discovery of a Higgs-like particle the day after the international announcement.
Singh Center for Nanotechnology
The newly-opened (Oct. 4, 2013) 78,000 square-foot Krishna P. Singh Center for Nanotechnology serves as Penn's focal point for nanoscience research and technology-development. P&A's Prof. Jay Kikkawa was instrumental in the planning and provision of vital services for the new facility.
Science Verification Images from DES
High resolution color image of area SPT-CL J2332-5358 from the Dark Energy Survey Science Verification stage of testing of the telescope and DECam.
Fluid Physics at the Molecular Scale
The image shows flagella driven by dynein molecular motors. The vectors show the position and time-dependent velocity. There is also a graph of the body velocity. Note the desychronization event.
This work comes from Adjunct Professor Jerry Gollub's lab.
"I didn't feel there was a book that
really spoke to Physics students about why this subject might be interesting to
them... There was a gap there." A textbook is a daunting proposition
for any academic, one that involves putting other research on hold...
Physics and Astronomy Professor Drndic has been chosen as a Penn Fellow for the next two years. The Penn Fellows program is designed to provide a select group of developing campus leaders with an opportunity to build University-wide networks, think strategically about higher education, and learn more about Penn and its programs by interacting informally with members of the University’s executive team.
Information about the current Fellows is listed at provost.upenn.edu/penn-fellows.