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Novel sensor array based on doped tin oxide nanowires for organic vapor detection

机译：基于掺杂氧化锡纳米线的新型传感器阵列，用于有机蒸气检测

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摘要

A novel sensor array consisting of four types of doped tin oxide nanowires was developed for organic vapor detection. The sensing materials were synthesized into nanowires instead of the traditional thin films to increase the surface-to-volume ratio, and then assembled into sensor units. Four different dopants were used to increase the selectivity of the sensor array, including platinum, copper, indium and nickel. Dynamic and static testing methods were utilized to characterize the performance of the sensor array to eight organic vapors. Results indicated high response of the sensor array in the order of tens of ppb. The investigation on response kinetics revealed fast response/recovery time and good repeatability of the sensor array. A database was compiled from the sensor response of four types of nanowire sensors to different vapor concentration levels. Principle component analysis (PCA) was conducted to reduce the dimensionality of the results and to classify the various organic vapors. PCA plots showed that most of the groups were separable, and hence proved the analyte discrimination capability of the sensor array.
机译：开发了一种由四种类型的掺杂氧化锡纳米线组成的新型传感器阵列，用于有机蒸气检测。传感材料被合成为纳米线，而不是传统的薄膜，以增加表面体积比，然后组装为传感器单元。四种不同的掺杂剂被用来提高传感器阵列的选择性，包​​括铂，铜，铟和镍。利用动态和静态测试方法来表征传感器阵列对八种有机蒸气的性能。结果表明传感器阵列的响应速度高达几十ppb。对响应动力学的研究表明，响应/恢复时间快，传感器阵列的重复性好。从四种类型的纳米线传感器对不同蒸气浓度水平的传感器响应中编译出一个数据库。进行了主成分分析（PCA），以减少结果的尺寸并分类各种有机蒸气。 PCA图显示大多数组是可分离的，因此证明了传感器阵列的分析物区分能力。

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  • 来源
    《Sensors and Actuators》 |2012年第1期|p.251-258|共8页
  • 作者

    Xiaopeng Li; Jung Hwan Cho; Pradeep Kurup; Zhiyong Gu;

  • 作者单位

    Department of Chemical Engineering, University of Massachusetts Lowell, One University Ave., Lowell, MA 01854, USA;

    Department of Civil and Environmental Engineering, University of Massachusetts Lowell, One University Ave., Lowell, MA 01854, USA;

    Department of Civil and Environmental Engineering, University of Massachusetts Lowell, One University Ave., Lowell, MA 01854, USA;

    Department of Chemical Engineering, University of Massachusetts Lowell, One University Ave., Lowell, MA 01854, USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    sensor array; nanowire; tin oxide; dopant; organic vapor; principle component analysis;

    机译：传感器阵列纳米线氧化锡掺杂剂有机蒸气主成分分析;

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