• Terrorists in Europe more difficult to track

    As intelligence services and law enforcement use ever-more-sophisticated technology to monitor and track terrorists, al Qaeda operatives and sympathizers are countering by using different measures to avoid detection; they avoid places that they assume are bugged or monitored, such as mosques and Islamic bookshops, use more sophisticated codes, and more

  • New T-ray source would improve airport security, cancer detection

    Terahertz radiation does not have sufficient energy to “ionize” an atom by knocking loose one of its electrons, which is good news, because this ionization causes the cellular damage that can lead to radiation sickness or cancer; T-ray absorption patterns could not only detect but also identify a much wider variety of hazardous or illegal substances than X-ray

  • DSC receives Home Office funding for improved explosive detector

    U.K. company has developed technology to produce from vapor single crystals of the compound semiconductor cadmium telluride, which can be used as detectors of X-rays and gamma rays

  • New X-ray technique developed

    The tomographic energy dispersive diffraction imaging (TEDDI) harnesses all the wavelengths present in an X-ray beam to create 3D pictures; could be used to detect hidden explosives, drugs, and human cancers more effectively

  • Europeans install radiation detectors as U.S. question detectors' efficacy

    U.S. legislators raise questions about DHS’s $1.4 billion program which aims to deploy nuclear radiation detectors in U.S. ports; GAO raises questions about test methodology of latest technology; Europeans, though forge ahead with port deployment

  • Living cells as bioterror detectors

    Terrapin researcher has an idea for bioterror attack detection: Use cells that die when exposed to a particular pathogen, thus providing the early warning; the cells are also engineered to produce a signal, such as fluorescence, when attacked

  • Hygiena launches hand-held device for contaminant detection

    A New Jersey food processor just went belly up as a result of having to launch the second largest recall of contaminated beef in U.S. history; a California company says that if its hand-held contamination monitor were used, the contaminant would have been found earlier, reducing the size of the recall and the subsequent financial hit

  • 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