fig5

Figure 5. Common ways to induce sweat. Physical activity such as (A) running. Reproduced under the terms and conditions of the CC BY-NC^[59]. Copyright 2020, Author(s), published by The American Association for the Advancement of Science; (B) cycling. Reproduced under the terms and conditions of the CC BY-NC^[60]. Copyright 2019, Author(s), published by The American Association for the Advancement of Science; (C) Schematic diagram of iontophoresis methods. Reproduced with permission^[61]. Copyright 2017, National Academy of Sciences Publishing Group; (D) Tattoo-based iontophoretic-biosensor. Reproduced with permission^[62]. Copyright 2016, American Chemical Society; (E) Triboelectric nanogenerator Enabled Sweat Extraction. Reproduced with permission^[63]. Copyright 2023, Wiley-VCH.