OVERVIEW OF CONTEMPORARY GAS SENSING TECHNOLOGIES IN ENOSE APPLICATIONS
Keywords:
Gas sensors, e-nose sensor array, MOS sensors, SAW sensors, QCM sensors, MOSFET sensors, Optical sensorsAbstract
Different types of gas sensors are utilized in electronic noses (E-noses) that have partial specificity. In this
paper, the main focus is on the range of sensors used in commercial and experimental electronic nose arrays to date.
This review paper outlines the construction, working principles, sensing materials, fabrication processes and application
areas of each sensor type which have been utilized. It also covers the advantages and disadvantages of each sensor type
for a cost-effective, low-power and portable e-nose system.