Method and device for detection of a nitroaromatic explosive
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United States of America Patent
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Jul 31, 2012
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app pub date -
May 28, 2008
filing date -
May 28, 2008
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Abstract
Detecting a nitroaromatic explosive via an exothermic chemical reaction of the nitroaromatic explosive with a polyamine or polyamine functional group is accomplished by depositing a polyamine or polyamine-functionalized coating on a microelectrode array and a semiconductor substrate, introducing a nitroaromatic explosive to an exposed surface of the polyamine or polyamine-functionalized coating, and measuring changes in electrical properties of the polyamine or polyamine-functionalized coating associated with the introducing of the nitroaromatic explosive. The nitroaromatic explosive detector comprises a microelectrode array formed on a semiconductor substrate, a polyamine or polyamine-functionalized coating deposited on and contiguous with the microelectrode array and the semiconductor substrate, and a measuring device for measuring any of resistance, conductance, and capacitance across the microelectrode array.
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