Advances in chemiresistive sensors for acetone gas detection

Detection of acetone gas embraces a broad range of purposes. It encompasses medical application for healthcare, serving as an alternative for conventional diagnosis of diabetes as well as aiding in environmental monitoring. Thus, a comprehensive understanding of recent development for chemiresistive acetone gas sensors is essential to ensure rapid progression is upheld in the future. The objectives of this review are to assess state-of-the-art of chemiresistive sensors for acetone gas detection and to identify factors affecting performance of the sensors which could bring about sensing developments. For these purposes, sensing characteristics entailing limit of detection, response and recovery time, stability as well as factors affecting sensing mechanisms are discussed thoroughly in the paper. This review informs readers about deficiencies that majority of gas sensors are still facing to date. Recognizing the shortcomings would encourage improvements on detection of acetone gas in the future.