Perovskite solar cells are a promising new low-cost photovoltaic technology, but most contain toxic lead; a team led by Brown researchers has introduced solar cells with a new titanium-perovskite material that gets the lead out. (more…)
Daya Bay neutrino experiment publishes a new result on its first search for a “sterile” neutrino
BEIJING; BERKELEY, CA; and UPTON, NY—The Daya Bay Collaboration, an international group of scientists studying the subtle transformations of subatomic particles called neutrinos, is publishing its first results on the search for a so-called sterile neutrino, a possible new type of neutrino beyond the three known neutrino “flavors,” or types. The existence of this elusive particle, if proven, would have a profound impact on our understanding of the universe, and could impact the design of future neutrino experiments. The new results, appearing in the journal Physical Review Letters, show no evidence for sterile neutrinos in a previously unexplored mass range. (more…)
UA physicists have discovered how to change the crystal structure of graphene. The finding could lead to smaller and faster microprocessors
A University of Arizona-led team of physicists has discovered how to change the crystal structure of graphene, more commonly known as pencil lead, with an electric field, an important step toward the possible use of graphene in microprocessors that would be smaller and faster than current, silicon-based technology. (more…)
