Skin sensor measures Vitamin C

This is from researchers at the University of California in San Diego: “By stimulating sweating in the underlying skin, the sensors can generate enough sweat to analyze for vitamin C levels. The flexible structure contains an enzyme, ascorbate oxidase that converts vitamin C to dehydroascorbic acid, consuming oxygen in the process. This generates an electrical current that flexible electrodes within the devices can sense, providing a data readout that is proportional to the level of vitamin C present in the sweat.”  MORE

Image Credit:  UCSD and MedGadget.com