Method and device for detection of a nitroaromatic explosive
First Claim
1. A method for detecting a nitroaromatic explosive, the method comprising:
- forming a microelectrode array on a semiconductor substrate;
depositing a polyamine or polyamine-functionalized coating on the microelectrode array and the 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,wherein a chemical reaction between a polyamine molecule or polyamine functional group of the polyamine or polyamine-functionalized coating and an explosive nitroaromatic molecule is exothermic.
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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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Citations
16 Claims
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1. A method for detecting a nitroaromatic explosive, the method comprising:
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forming a microelectrode array on a semiconductor substrate; depositing a polyamine or polyamine-functionalized coating on the microelectrode array and the 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, wherein a chemical reaction between a polyamine molecule or polyamine functional group of the polyamine or polyamine-functionalized coating and an explosive nitroaromatic molecule is exothermic. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A nitroaromatic explosive detector, comprising:
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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, wherein the polyamine or polyamine-functionalized coating includes an exposed surface upon which the nitroaromatic explosive is adsorbed; and a measuring device for measuring any of resistance, conductance, and capacitance across the microelectrode array to detect the nitroaromatic explosive, wherein a chemical reaction between a polyamine or polyamine functional group molecule of the polyamine or polyamine-functionalized coating and an explosive nitroaromatic molecule is exothermic. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification