North Carolina State University in Raleigh, Night Vision Laboratory at Fort Belvoir, Va., and the Honeywell Technology Center of Minneapolis have completed a demonstration of a semiconductor-based, digital ultraviolet camera. The device employs a 1024-sensor array of AlGaN photodiodes sensitive to wavelengths of 320 to 365 nm. Large-format devices will have applications in astronomy, environmental sensing, and military detection of biological agents and missile- and shellfire. Jan F. Schetzina, a professor at the university's solid-state physics laboratory and director of the project, published the team's results online with the Materials Research Society's Internet Journal of Nitride Semiconductor Research.