Distinction of gases with a semiconductor sensor depending on the scanning profile of a cyclic temperature

被引：19

作者：

Nakata, S ^{[1
]}

Okunishi, H ^{[1
]}

Nakashima, Y ^{[1
]}

机构：

[1] Nara Univ Educ, Dept Chem, Nara 6308528, Japan

来源：

ANALYST | 2006年 / 131卷 / 01期

关键词：

D O I：

10.1039/b509996j

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A gas-sensing system based on a dynamic nonlinear response is reported to improve the selectivity in the sensor response toward sample gases. A cyclic temperature composed of fundamental and second harmonics was applied to a SnO2 semiconductor gas sensor and the resulting conductance of the sensor was analyzed by fast Fourier transformation (FFT). The dynamic nonlinear responses to the gas species were further characterized depending on the scanning profile of the temperature. These characteristic sensor responses under the application of second-harmonic perturbation were theoretically considered based on a reaction-diffusion model for the semiconductor surface.

引用

页码：148 / 154

页数：7

共 37 条

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