A representation of blood flow changes in a rat brain during cortical spreading depression. In the experiment, a large local concentration of KCl initiates a 'wave' of neuronal depolarization that propagates outward from a central point and then repeats itself. The figure shows images of blood flow in four parallel planes located within 3 millimeters of the skull.
Bio-optics and bio-optical materials
Prof. Alison Sweeney and her colleagues believe that the reflective structures in giant clams help them grow algae. The clams use sub-wavelength structures formed from a protein called reflectin to optimize the photosynthesis of the algae living in the clam tissues.
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.
Spatiotemporal heterogenous dynamics in air-fluidized grains near jamming. The colors represent the average speed over a time interval large enough for grain-sized rms displacement. The most mobile grains are in red, the least are in blue, across the rainbow. Note the stringy correlations of the mobile grains in red. From the lab of Prof. Doug Durian.
Penn physicists study graphenes, atomically thin sheets of carbon atoms in a honeycomb lattice. Graphene is the prototype Dirac material hosting a solid state realization of an ultra-relativistic electron gas and accessing new phenomena that are controlled by electric and magnetic fields and by the atomic registry when graphenes are stacked.
Devlin, Professor of Astronomy and Astrophysics, will be the spokesperson for
the newly formed Simons Observatory. The Simons Foundation funded Observatory
will mark a new astronomy facility in Chile’s Atacama Desert that will merge
and expand existing efforts to explore the evolution of the universe from its
earliest moments, to today. Devlin’s research focuses in the area of cosmology
and the evolution of structure in the universe as well as extra-galactic and
galactic star formation.
Congratulations to Professor Paul Heiney, the recipient of the Ludwig Award which recognizes his years of dedicated service and committment to our students.
As Dean of the College, Dennis DeTurck wrote in his letter,
“The Ludwig Award carries a special significance because the entire process of
soliciting nominations and selecting the recipient is carried out by the
Student Committee on Undergraduate Education, without intervention by the
faculty or administration.”
"The Drndic group and Project BioEyes from University of Pennsylvania demonstrated how DNA affects physical features in living organisms, like zebrafish, and the importance of DNA sequencing in an educational exhibit at Philadelphia Science Festival on Saturday April 30 2016 as a part of National DNA Day initiative.