TY - JOUR AB - 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. VL - 35 IS - 4 SN - 0260-2288 DO - 10.1108/SR-12-2014-0747 UR - https://doi.org/10.1108/SR-12-2014-0747 AU - Smulko Janusz Marek AU - Trawka Maciej AU - Granqvist Claes Goran AU - Ionescu Radu AU - Annanouch Fatima AU - Llobet Eduard AU - Kish Laszlo Bela PY - 2015 Y1 - 2015/01/01 TI - New approaches for improving selectivity and sensitivity of resistive gas sensors: a review T2 - Sensor Review PB - Emerald Group Publishing Limited SP - 340 EP - 347 Y2 - 2024/03/28 ER -