Figure 6.

Real-time on-body evaluation of the MXene-based sensor patch indicating the pH levels, lactate, and glucose concentrations. (a) Schematic illustration of the oxygen-rich enzyme electrode. (b) The wearable sweat-monitoring patch is connected to a portable electrochemical analyzer on the skin. (c) Cycling resistance profile for on-body tests. (d) Measured chronoamperometric responses of glucose sensors and pH changes before and after meals with three different glucose sensors. (e) Measured pH level of pH sensor at different times during the exercise. (f) Measured chronoamperometric responses of the lactate sensor at different times during the exercise. Reprinted with permission from Ref. [64]. 2022, John Wiley and Sons.