Figure 15.

TENGs for human–machine interface applications. (a) A paper-based TENG for self-powered sound recording. Reproduced with permission [154]. Copyright 2015, American Chemical Society. (b) Eardrum-inspired active sensors for self-powered throat-attached anti-interference voice recognition. Reproduced with permission [138]. Copyright 2015, John Wiley & Sons. (c) Dynamic triboelectrification-induced electroluminescence and its use in visualized sensing. Reproduced with permission [155]. Copyright 2016, John Wiley & Sons. (d) Self-powered high-resolution and pressure-sensitive triboelectric sensor matrix for real-time tactile mapping. Reproduced with permission [156]. Copyright 2016, John Wiley & Sons. (e) Screen-printed washable electronic textiles as self-powered touch gesture tribo-sensors. Reproduced with permission [157]. Copyright 2018, American Chemical Society. (f) Self-powered noncontact electronic skin for motion sensing. Reproduced with permission [158]. Copyright 2018, John Wiley & Sons. (g) Eye-motion-triggered self-powered mechnosensational communication system using TENG. Reproduced with permission [159]. Copyright 2017, American Association for the Advancement of Science. (h) Personalized keystroke dynamics for self-powered human–machine interfacing. Reproduced with permission [98]. Copyright 2015, American Chemical Society. (i) Keystroke-dynamics-enabled authentication and identification using TENG array. Reproduced with permission [160]. Copyright 2018, Elsevier.