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Microstrip Resonant Sensor for Differentiation of Components in Vapor Mixtures

机译：微带共振传感器用于区分蒸气混合物中的组分

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摘要

A novel microstrip resonant vapor sensor made from a conductive multiwalled carbon nanotubes/ethylene-octene copolymer composite, of which its sensing properties were distinctively altered by vapor polarity, was developed for the detection of organic vapors. The alteration resulted from the modified composite electronic impedance due to the penetration of the vapors into the copolymer matrix, which subsequently swelled, increased the distances between the carbon nanotubes, and disrupted the conducting paths. This in turn modified the reflection coefficient frequency spectra. Since both the spectra and magnitudes of the reflection coefficients at the resonant frequencies of tested vapors were distinct, a combination of these parameters was used to identify the occurrence of a particular vapor or to differentiate components of vapor mixtures. Thus, one multivariate MWCNT/copolymer microstrip resonant sensor superseded an array of selective sensors.
机译：开发了由导电多壁碳纳米管/乙烯 - 辛烯共聚物复合材料制成的新型微带谐振蒸气传感器，其中开发了其感测性能以通过蒸气极性显着改变，用于检测有机蒸汽。由于蒸汽渗透到随后膨胀的共聚物基质中，改性复合电子阻抗导致改变的改变，增加了碳纳米管之间的距离，并破坏导电路径。这反过来修改了反射系数频谱。由于测试蒸汽的谐振频率下反射系数的光谱和幅度都是不同的，因此这些参数的组合用于识别特定蒸汽或分化蒸气混合物的组分的发生。因此，一种多变量MWCNT /共聚物微带谐振传感器被取代了一系列选择性传感器。

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