Gas Sensors: A Review

Sensors & Transducers

Zaiki Awang¹  Mohd. Nizar Hamidon²  Zainab Yunusa²  Ahsanul Kaiser³ 

[1] Faculty of Electrical Engineering, Universiti Teknologi MARA 40150 Shah Alam, Selangor, Malaysia;Institute of Advanced Technology, Universiti Putra Malaysia 43400 Serdang, Selangor, Malaysia ;Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia 43400 Serdang, Selangor, Malaysia ;

关键词: Gas Sensor;    Sensitivity;    Selectivity;    Surface Acoustic Wave.;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this paper a review of different technologies for gas sensors is presented. The different types of gas sensors technologies including catalytic gas sensor, electrochemical gas sensors, thermal conductivity gas sensor, optical gas sensor and acoustic gas sensor are discussed together with their principle of operation. The Surface Acoustic Wave Gas Sensor technology is discussed in greater detail. The advantages and disadvantages of each sensor technology are also highlighted. All these technologies have been used for several decades for the development of highly sensitive and responsive gas sensors for the detection of flammable and hazardous gases. However, for improved sensitivity and selectivity for these sensors, future trends and outlook for researchers are suggested in the conclusion of this article.

【 授权许可】

Unknown