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. 2022 Feb 2;13(2):254. doi: 10.3390/mi13020254

Figure 4.

Figure 4

Triboelectric wearable sensors. (a) A novel structure named Non-Attached Electrode-Dielectric Triboelectric Sensor (NEDTS) that can detect eye motion. Reproduced with permission from Elsevier (2020) [56]. (b) The minimalistic design of a glove made up of several triboelectric textile sensors. Reproduced with permission from Wiley (2020) [57]. (c) The printed silk fibroin-based triboelectric nanogenerator that could realize the recognition of joint motion. Reproduced with permission from Elsevier (2019) [58]. (d) The mechanical characterization of the super-stretchable TENG. Reproduced with permission from Elsevier (2019) [59]. (e) Smart insoles assembled into the shoes to serve as a self-powered gait monitoring system and a warning system for falling down. Reproduced with permission from Wiley (2018) [60]. (f) Three kinds of polymer pattern arrays (line, cube and pyramid) in the electrification layer that could improve their sensitivity. Reproduced with permission from the American Chemical Society (2012) [63].