首页> 外文会议>International Symposium on Chemical and Biological Sensors and Analytical Methods II, 2001 >PROGRESS IN USE OF CARBON BLACK-POLYMER COMPOSITE ARRAYS FOR VAPOR DETECTION
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PROGRESS IN USE OF CARBON BLACK-POLYMER COMPOSITE ARRAYS FOR VAPOR DETECTION

机译:碳黑聚合物复合阵列在气相检测中的应用进展

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Thin films of carbon black-organic polymer composites have been deposited across two metallic leads, with swelling-induced resistance changes of the films signaling the presence of vapors. To identify and classify vapors, arrays of such vapor sensing elements have been constructed. Each element contained a different organic polymer as the insulating phase. The differing gas-solid partition coefficients for the various polymers of the detector array produced a pattern of resistance changes that was used to classify vapors and vapor mixtures. The performance of this system towards DNT, the predominant signature in the vapor phase above land mines, has been evaluated in detail, with robust detection demonstrated in the laboratory in less than 5 s in air at DNT levels in the low ppb range.
机译:炭黑-有机聚合物复合材料的薄膜已经沉积在两条金属引线之间,薄膜的膨胀引起的电阻变化表明存在蒸汽。为了识别和分类蒸气,已经构造了这种蒸气感测元件的阵列。每个元素包含不同的有机聚合物作为绝缘相。检测器阵列的各种聚合物的气固分配系数不同,产生了电阻变化模式,该模式用于对蒸气和蒸气混合物进行分类。已经详细评估了该系统对DNT的性能,DNT是地雷上方气相中的主要特征,实验室在低ppb范围内的DNT水平下,在不到5 s的时间内就证明了强大的检测性能。

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