Jamming and the Glass Transition

Professor Andrea Liu's group studies the theory of jamming - the phenomenon wherein a system that normally flows much like a liquid (as with foams) become solid-like when subjected to shear stress.



Prof. Vijay Balasubramanian's research includes studies of structural and functional organization of the retina with multi-electrode arrays that record retinal ganglion cells. He also studies computational principles that underlie the organization of circuits in the early visual system.

Topology and Liquid Crystals

Liquid crystal molecules can be molded into shapes which resemble a Hopf fibration, a complex shape from topology resembling a series of linked rings wrapped into a torus. This fascinating shape has applications in mathematics, quantum physics, and computer graphics.

From the lab of Bryan Gin-Ge Chen, former grad student of Prof. Randy Kamien.

ATLAS Transition Radiation Tracker

The Penn HEP group played a major role in the design, construction, and commissioning of electronics to read the electrical signals on each wire of the TRT. This includes both analog electronics (ASDBLR) to discriminate and shape the analog signal from each wire, and digital electronics (DTMROC) to record the signal every 3.125ns and interface with the detector read-out.

Protein Design

Penn researchers including Penn physicists Marija Drndic and Jay Kikkawa have designed  specialized protein molecules that organize around carbon nanotubes into an atomistically-predefined pattern. Targeted design of such self-organization is a powerful tool for engineering at the nano scale.