Distinction of gaseous mixtures based on different cyclic temperature modulations

Distinction of gaseous mixtures based on different cyclic temperature modulations
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基于不同循环温度调制的气体混合物的区分

DOI:
10.1016/j.snb.2022.131615
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发表时间:
2022
期刊:
Sensors and Actuators B
影响因子:
--
通讯作者:
Naho Takahara
Naho Takahara
中科院分区:
--
文献类型:
--
作者:
Satoshi Nakata;Naho Takahara

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为了提高SnO 2半导体气体传感器对气体混合物的选择性,研究了两种温度调制下SnO 2半导体气体传感器的动态非线性响应。对SnO2半导体气敏元件进行了“急升慢降”和“缓升快降”的周期性温度扫描。所得的动态变化的传感器的电导的特征性地改变取决于气体和混合物的组合。气体混合物的部分可能区分的三种类型的分类的基础上的总和的个别传感器的响应和选择性的响应到一个特定的气体。
The dynamic nonlinear response of a SnO2semiconductor gas sensor under two types of temperature modulations was investigated to enhance the selectivity of the sensor for gaseous mixtures. A “rapid increase and slow decrease” and “slow increase and rapid decrease” in temperature scan were periodically applied to the SnO2semiconductor gas sensor. The resultant dynamic change in the conductance of the sensor was characteristically changed depending on the gases and the combination of the mixture. The gaseous mixtures were partly possible to distinguish by the three types of classification based on the sum of the individual sensor responses and the selective response to a specific gas.
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