Organic Electrochemical Transistors as Wearable, Human-Biochemistry Monitoring Technologies

Sweat is a biomarker-rich biofluid, where biomarkers can inform about performance, health, disease state, nutrition, and environmental impacts. The possibility of continuous, non-invasive collection makes sweat an attractive source to monitor and heal but also could facilitate diagnostics and performance augmentation. Organic electrochemical transistors (OECTs) are a new type of field-effect transistor that can be entirely printed on flexible substrates, with a large transconductance (~mS) with low operating voltages (<1 V). This talk will focus on device physics, interface characterizations, and the viability of organic electrochemical transistors for wearable sweat sensors. Experimental results on devices will be complemented with benchtop laboratory chemistries and virtual sweat sensor simulations.