Excitons are electrically neutral excited states of a material consisting of a bound state of an electron and a hole. Prof. Jay Kikkawa explores previously unseen "dark exciton" states in carbon nanotubes and shows their dependence on geometry of the nanotube.
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.
Cargo vesicles traveling along microtubles
Cargo vesicles (stained with green fluorescent dye) travelling along microtubules (stained red) in a living cell as studied in Professor Phil Nelson's group.
Large Synoptic Survey Telescope Site
A rendering of the LSST summit facility. Nearby is Calypso, a small telescope adjacent to the LSST 8-meter telescope. Calypso will monitor the atmosphere.
Large Hadron Collider - ATLAS Higgs candidate event
An event captured by the ATLAS detector in the search for a Higgs boson decaying into two Z bosons, one of which goes into a pair of electrons and two muons (the two tracks shown in red). There is no way to tell if this particular event comes from a Higgs decay or simply from a background event such as one containing two Z bosons.
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.