New sensor technology developed by engineers at the US Department of Energy's Argonne National Laboratory can now detect chemical, biological, nuclear, and explosive materials much more quickly and efficiently. From the article: "The millimeter/terahertz technology detects the energy levels of a molecule as it rotates. The frequency distribution of this energy provides a unique and reproducible spectral pattern - its 'fingerprint' - that identifies the material. The technology can also be used in its imaging modality - ranging from concealed weapons to medical applications such as tumor detection."
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