A wearable chemical electrophysiological hybrid biosensing system for real time health and fitness monitoring
Flexible, wearable sensing devices can yield important information about the underlying physiology of a human subject for applications in real time health and fitness monitoring. Despite significant progress in the fabrication of flexible biosensors that naturally comply with the epidermis, most designs measure only a small number of physical or electrophysiological parameters, and neglect the rich chemical information available from biomarkers. Here, we introduce a skin worn wearable hybrid sensing system that offers simultaneous real time monitoring of a biochemical (lactate) and an electrophysiological signal (electrocardiogram) for more comprehensive fitness monitoring than from physical or electrophysiological sensors alone. The two sensing modalities, comprising a three electrode amperometric lactate biosensor and a bipolar electrocardiogram sensor, are co fabricated on a flexible substrate and mounted on the skin. Human experiments reveal that physiochemistry and electrophysiology can be measured simultaneously with negligible cross talk, enabling a new class of hybrid sensing devices.
Nature communications