Device detects nanogram-sized explosives

U.S. researchers have developed a prototype of a tool that can fight terrorism by detecting nanogram-sized samples of explosives.

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<p><a href="http://www.physorg.com/news6905.html">Device detects nanogram-sized explosives</a></p> <p>U.S. researchers have developed a prototype of a tool that can fight terrorism by detecting nanogram-sized samples of explosives. </p>