New approaches for improving selectivity and sensitivity of resistive gas sensors: a review

被引：80

作者：

Smulko, Janusz Marek ^{[1
]}

Trawka, Maciej ^{[1
]}

Granqvist, Claes Goran ^{[2
]}

Ionescu, Radu ^{[3
]}

Annanouch, Fatima ^{[4
]}

Llobet, Eduard ^{[5
]}

Kish, Laszlo Bela ^{[6
]}

机构：

[1] Gdansk Univ Technol, Dept Metrol & Optoelect, Gdansk, Poland

[2] Uppsala Univ, Dept Engn Sci, Angstrom Lab, Solid State Phys, Uppsala, Sweden

[3] Rovira & Virgily Univ, Dept Elect, Elect & Automat Engn, Tarragona, Spain

[4] Rovira & Virgily Univ, Dept Elect Engn, Tarragona, Spain

[5] Rovira & Virgily Univ, Dept Elect Engn, Elect Technol, Tarragona, Spain

[6] Texas A&M Univ, Dept Elect Engn, Dept Elect & Comp Engn, College Stn, TX 77843 USA

来源：

SENSOR REVIEW | 2015年 / 35卷 / 04期

基金：

欧洲研究理事会;

关键词：

Noise; Gas sensors; Detection methods; Low-frequency noise; Photo-catalytic effect; SENSING PROPERTIES; ELECTRONIC NOSES; CHEMICAL SENSORS; OXIDE; NOISE; METAL; FILM; IDENTIFICATION; SPECTRA; DEVICES;

D O I：

10.1108/SR-12-2014-0747

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Purpose - This paper aims to present the methods of improving selectivity and sensitivity of resistance gas sensors. Design/methodology/approach - This paper compares various methods of improving gas sensing by temperature modulation, UV irradiation or fluctuation-enhanced sensing. The authors analyze low-frequency resistance fluctuations in commercial Taguchi gas sensors and the recently developed tungsten trioxide (WO3) gas-sensing layers, exhibiting a photo-catalytic effect. Findings - The efficiency of using low-frequency fluctuations to improve gas detection selectivity and sensitivity was confirmed by numerous experimental studies in commercial and prototype gas sensors. Research limitations/implications - A more advanced measurement setup is required to record noise data but it will reduce the number of gas sensors necessary for identifying the investigated gas mixtures. Practical implications - Fluctuation-enhanced sensing can reduce the energy consumption of gas detection systems and assures better detection results. Originality/value - A thorough comparison of various gas sensing methods in resistance gas sensors is presented and supported by exemplary practical applications.

引用

页码：340 / 347

页数：8

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