Abstract
Wearable chemical and biochemical sensors are a relatively new area of sensor research that poses unique challenges to the field of wearable sensing. The reason is that chemical sensors have a different mode of operation compared to physical transducers, and thus must be directly exposed, and interact with, specific molecular components in (usually liquid) samples. Wearable chemical and biochemical sensing has the potential to provide new sources of non-invasive physiological information through interaction with a variety of body fluids, such as sweat and interstitial fluids. This information may be used to enhance personal health through early detection of illness that in turn can trigger early interventions. There is also the potential to ensure personal safety by monitoring hazardous substances in the individual’s external environment. This chapter explains the design issues of wearable chemical sensors. Some of the main application areas of this novel technology are discussed with examples of the latest research developments.
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