• Laser diodes with world's shortest wavelength for bioterror detection

    Currently, the shortest laser diode reported measures 343nm — which is problematic: Most biological molecules show strong absorption in the ultraviolet spectral region ranging from 280nm to 340nm; researchers at Bristol and Sheffield universities fabricate the first 337nm laser diode — allowing for continuous monitoring of biological molecules; technology will also increase capacity for information storage

  • DHS bolsters anti-IED efforts

    Expert say it is only a question of time before IED’s show up on U.S. soil; DHS’s Science & Technology Directorate wants to have technologies on hand to deal with the threat when it materializes

  • Inexpensive sensors could capture your every move

    A system of cheap and small sensors is similar to, but much simpler than, bats’ ultrasonic echolocation, and together with the motion sensors provides a more accurate overall picture of body movement

  • DHS's ambitious nuclear radiation detection plan has its critics

    DHS envisions a protective radiation system which will ring the United States with radiation monitors at ports, along isolated sea coasts, traveling the oceans, roaming highways in police cars, and even located at checkpoints and toll booths on routes into major cities — all connected to a central national command center and staffed around the clock; critics have their questions

  • Border Web cameras along Texas-Mexico border go online again

    Texas governor Rick Perry found the funds to have virtual watch up and running — again — as early as January; Texans can register to have 200 border cameras feed images to their home PCs; if they see people crossing the border, the can call or e-mail authorities