Juan Collar’s work focuses on developing innovative methods for detecting Weakly Interacting Massive Particles (WIMPs) and other hypothetical subatomic particles that could account for dark matter. His research group has developed the Chicagoland Observatory for Underground Particle Physics (COUPP) in its quest to detect dark matter. This unknown form of matter accounts for more than 90 percent of all matter in the universe. Although invisible to telescopes, scientists can observe the gravitational influence it exerts on galaxies. COUPP is part of SNOLAB, located in a Canadian mine more than a mile underground. Collar also is a member of the Coherent Germanium Neutrino Technology (CoGeNT) collaboration, which operates a detector that sits nearly half a mile deep at the Soudan Underground Mine State Park in Minnesota. In related work, Collar is a collaborator on the CERN Axion Solar Telescope of the European particle physics laboratory. He also is developing new methods of neutrino detection.