Fig. 3: Examples of wearable sweat sensors made of different materials.
From: Wearable and flexible electrochemical sensors for sweat analysis: a review

a A fully integrated wearable sensing platform using PET as the substrate7. Copyright 2016, Springer Nature. b An embroidered electrochemical sensor for biomolecular detection fabricated on a cotton t-shirt104. Copyright 2016, RSC. c A thread-based multiplexed sensor patch for sweat monitoring9. Copyright 2020, Springer Nature. d A sweat analysis patch using a foldable all-paper substrate31. Copyright 2021, Elsevier. e A wearable electrochemical sensing array using SilkNCT as the working electrode117. Copyright 2019, AAAS. f A wearable laser-engraved sensor for sweat detection61. Copyright 2020, Springer Nature