Figure 5.

(a) Schematic electrodeposition process with a three-electrode system (reprinted with permission from Ref. [98] Copyright 2021, John Wiley and Sons); (b) average resistance values of differently electroplated conductive threads (reprinted with permission from Ref. [97] Copyright 2021, Springer Nature Limited); (c) working principle of the thread sensor that detects chloride ions, pH and sweat simultaneously (reprinted with permission from Ref. [97] Copyright 2021, Springer Nature Limited); (d) SEM image of PET coated uniformly with amorphous NiWO₄ (adapted from Ref. [89]); (e) SEM of Cu NP-coated PET knitted fabric and corresponding conductivity test (adapted from Ref. [99]).