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Room-Temperature Chemiresistive Effect of ${\rm TiO}_{2}\!-\!{\rm B}$ Nanowires to Nitroaromatic and Nitroamine Explosives

Room-Temperature Chemiresistive Effect of ${\rm TiO}_{2}\!-\!{\rm B}$ Nanowires to Nitroaromatic and Nitroamine Explosives,10.1109/JSEN.2010.2089618,I

Room-Temperature Chemiresistive Effect of ${\rm TiO}_{2}\!-\!{\rm B}$ Nanowires to Nitroaromatic and Nitroamine Explosives  
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nanowires and a consequent depletion of charge carriers in the nanowires by surface states created by the explosive molecules. The role of the nanowires is proposed to impart both an extremely large surface area for the adsorption of gas molecules and a surface enriched in hydroxyl groups which connect to nitro groups of the explosive molecules. Chemiresistive sensors made of semiconducting nanowires promised to achieve micro-sized devices with several orders of magnitude reduction in dimensions, weight, and power consumption over current explosive detectors. Index Terms—Charge transfer, chemiresistive sensor, surface depletion layer, nanowires, trace explosives detector.
Journal: IEEE Sensors Journal - IEEE SENS J , vol. 11, no. 6, pp. 1352-1358, 2011
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