Abstract
A brief outline of existing sensing response systems based on metal oxide thin films utilizing conductometric, surface acoustic wave (SAW), and infrared gas sensing techniques is presented. Recent results on conductometric and SAW techniques demonstrate the advantages of these techniques in detecting gases, such as O3, H2 and NO2, at very low concentrations. Present detection limits are in the low ppb range and show the potential for the development of low cost, low temperature gas sensing systems. Infra-red (IR) gas sensing provides an attractive alternative for high-resolution, non-destructive, quantifiable and fast detection technique for important chemical species. In the last two decades, these detection techniques have earned significant attention by the research community in an effort to overcome the technological hurdles faced by conventional technologies. Finally, a discussion on graphene based sensors capable of detecting individual events when a gas molecule interacts with the graphene’s surface is presented.
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Kiriakidis, G., Moschovis, K., Sadale, S.B. (2009). Systems and Set-ups for Effective Sensing Response Applications. In: Baraton, MI. (eds) Sensors for Environment, Health and Security. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9009-7_10
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DOI: https://doi.org/10.1007/978-1-4020-9009-7_10
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