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Engineers at the U.S. Department of Energy's Argonne National Laboratory, using an emerging sensing technology, have developed a suite of sensors for national security applications that can quickly and effectively detect chemical, biological, nuclear and explosive materials.
"We can use this technology to detect chemical and biological agents and also to determine if a country is using its nuclear reactors to produce material for nuclear weapons or to track the direction of a chemical or radioactive plume to evacuate an area," explained Paul Raptis, section manager. Raptis is developing these sensors with Argonne engineers Sami Gopalsami, Sasan Bakhtiari and Hual-Te Chien.
Argonne engineers have successfully performed the first-ever remote detection of chemicals and identification of unique explosives spectra using a spectroscopic technique that uses the properties of the millimeter/terahertz frequencies between microwave and infrared on the electromagnetic spectrum. The researchers used this technique to detect spectral "fingerprints" that uniquely identify explosives and chemicals.