Nowadays, wearable sensors such as heart rate monitors and pedometers are in common use. The use of
wearable systems such as these for personalized exercise regimes for health and rehabilitation is particularly interesting.
In particular, the true potential of wearable chemical sensors, which for the real-time ambulatory monitoring of bodily
fluids such as tears, sweat, urine and blood has not been realized. Here we present a brief introduction into the fields of
ionogels and organic electrochemical transistors, and in particular, the concept of an OECT transistor incorporated into a
sticking-plaster, along with a printable "ionogel" to provide a wearable biosensor platform.
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