Intrusion detection is moving up a couple of notches with a technology that overcomes one of the main vulnerabilities of conventional security systems. Oak Ridge National Laboratory's Quantum Optical Seal, ideal for securing nuclear, military and chemical facilities, monitors an optical network for ...
Theoretical physicists have long predicted the existence of a quantum state of matter they call "supersolidity," in which solid helium-4 loses its viscosity and flows like a liquid. Researchers are using the Spallation Neutron Source in a series of studies to pin down whether this paradoxical new st...