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. 2021 Mar 17;7:25. doi: 10.1038/s41378-021-00248-z

Fig. 6. Portable and wearable self-powered systems assisted with machine learning technology.

Fig. 6

a Self-powered machine learning glove based on a superhydrophobic triboelectric fabric structure. Reprinted from ref. 101 with permission. b Self-powered triboelectricity-based touchpad (TTP). Reprinted from ref. 102 with permission. c Epidermal sEMG tattoo-like patch for silent speech recognition. Reprinted from ref. 103 with permission. d TENG-based smart electronics for both voice signal recognition and handwritten signal recognition. Reprinted from ref. 104 with permission.