Fig. 9

a Schematic of the ETCs (left) and the biosensor multilayers (right). b A biosensor attached to skin surface for glucose monitoring. c Results of glucose monitoring in one day by a glucometer and a biosensor. d Results of glucose monitoring in 5 days by a glucometer and a biosensor. Adapted with permission from ref. 48. Copyright 2017 American Association for the Advancement of Science. e Schematic of the sensor system for multiplexed sweat analysis. f Photograph of a flexible integrated sensing device. g The result of sweat analysis by wearing the sensor on the forehead of the subject. h The result of sweat analysis by wearing the sensor on the forehead of another subject. Adapted with permission from ref. 54. Copyright 2016 Springer Nature