Chemical Sensors and Electronic Noses

Before we survey the wide range of technologies available for chemical sensing, a distinction must be made between chemical sensors and electronic noses 

Because e-noses are composed of an array of chemical sensors, the performance of the sensor array is limited by the properties (sensitivity, selectivity, reproducibility, reversibility, etc.) of the individual sensors. Therefore, this chapter will focus on the individual chemical sensing approaches and their transduction mechanisms, rather than the aggregate performance of the array coupled with signal processing techniques. 

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Our research on chemical sensors and electronic noses is supported by grants from the Swedish National Board for Technical and Industrial Development, the Swedish Engineering Sciences Research Council and the Center for Industrial Information Technology at Linkdping University. 

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