Figure 3.

(a) The fully integrated wearable multiplexed sensing system on a subject’s arm. Diagrams of a flexible sensor array containing Ca²⁺, pH, and temperature sensors patterned on a flexible polyethylene terephthalate substrate and corresponding surface membrane electrode compositions. Reprinted with permission from ref. [113]. Copyright 2016 American Chemical Society. (b) Schematic representation of the tailor-made stretchable materials and the wearable sensor based on textile and ion-selective membranes composition. Reproduced with permission [114]. Copyright 2016, Wiley-VCH. (c) The images of a Chem-Phys patch along with the wireless electronics. The schematics show the lactate oxidase-based lactate biosensor along with the enzymatic and detection reactions. Reproduced with permission [116]. Copyright 2016, Springer Nature. (d) Schematic illustration of the general sensing mechanism of the resultant hydrogel electrode platform based on PANI/PtNPs/enzyme hybrid films. Reprinted with permission from ref. [117]. Copyright 2015 American Chemical Society.