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.
A synthetic peptide candidate that can be used for single molecule electronic measurements. Single molecules can act as a functioning part of a field effect transistor device as studied in Professor Charlie Johnson's lab.
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.
Euclid Mission to Explore Dark Energy
Euclid is an ESA mission to map the geometry of the dark Universe. The mission will investigate the distance-redshift relationship and the evolution of cosmic structures. Penn researchers are part of the Euclid science team.
Dark Energy Studies
Professor Masao Sako uses Type Ia supernovae to study the expansion history of the universe. The graphs show (left and middle) Hubble diagrams from a simulated 5-year Type Ia sample from the Dark Energy Survey. The right graph shows the 95% confidence limits on dark energy parameters.
The Honors and Awards Committee of the ILCS selected Dr.
Beller for his thesis work:
For his outstanding theoretical work to identify the rich
possibilities and outcomes of controlling defects in nematic and smectic liquid
crystals under a variety of boundary conditions. The demonstration of the well controlled disclinations
and focal conics is expected to open up a novel route for self-assembly in soft-ordered
The supermassive black holes found at the centre of every
galaxy may be smaller than previously thought. If
Mariangela Bernardi and her colleagues are right, then the gravitational waves
produced when they merge will be harder to detect than previously assumed.