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.
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).
Quintic Calabi-Yau manifold
In superstring theory, the fundamental building block is an extended object, namely a string, whose vibrations would give rise to the particles encountered in nature. In order to solve certain classic problems of unified gauge theories, the 4-dimensional effective theory should be in a space which is a Calabi-Yau manifold of complex dimension 3.
The Epoch of Reionization
Astrophysicists are interested in tracing the development of large scale structure during the so-called Epoch of Reionization - the period in the history of the universe in which the first luminous sources turn on and ionize neutral hydrogen in their vicinity. Prof. Adam Lidz studies the theory of how to detect and gain information from radition emitted during this period.
The Best View in Philadelphia
The University of Pennsylvania recently finished their newest addition
to the campus, Penn Park, which adds a brilliant contrast to the
Philadelphia skyline and gives multiple sports teams a new place to
practice and engage in athletics.
Arjun Yodh showed how one form of a solid can transition to another by becoming a liquid first.
Two solids made of the same elements but with different geometric
arrangements of the atoms, or crystal phases, can produce materials with
different properties. Coal and diamond offer a spectacular example of
Natural selection in an extreme environment has gradually sculpted the giant clam into an exceedingly efficient farmer; it turns the fierce sunlight in its equatorial ocean home into algae, and those single-celled plants into food.