Professor Alison Sweeney studies bio-optical properties of cephalopods and the cellular and biochemical mechanisms of dynamic camouflage.
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.
Nanoscale Electronic Nose
Prof. Charlie Johnson's group at Penn have coupled olfactory receptor proteins from mice to carbon nanotubes to create a prototype electronic nose. Olfactory receptors are embedded in nanodiscs that mimic the environment of the olfactory cell membrane. Odorant molecules bind to the receptor, which produces an electrical response in the carbon nanotube (gray cylinder).
Professor Randall Kamien studies the physics and mathematics of kirigami — an extension of origami that allows cutting holes into the paper. By treating the sheet of paper as a two-dimensional crystalline lattice, the folds, cuts, and pleats, can be understood in terms of topological defects in the underlying structure.
LaBr3 detector modules for Next Generation PET scanners
On the left is a schematic of adjacent modules with overlapping photomultiplier tubes while the right is a photograph of a single module with PMT's and 8-mm thick light guide. Improvements in timing resolution for time-of-flight PET is the research of Adjunct Prof. Joel Karp in Penn Radiology.
Physics and Astronomy graduate student, Dillon Fox, is challenged to answer the question "What is energy?" judged by a team of eleven year old scientists in training in a bid to amplify effective communication with the public. To watch Fox's Flame Challenge video entry, visit OMNIA
published in Advanced
kirigami structures will someday literally reshape our world. These
metamaterials have the unique ability to control their shape and design in
response to external stimuli. With the introduction of notches, kirigami
structures gain even more mobility and control. These enhanced kiri-kirigami
implement thermal control and light control that can be especially useful in
architecture and energy saving buildings.