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. 2020 May 21;20(10):2925. doi: 10.3390/s20102925

Figure 11.

Figure 11

Smart shoes based on TENGs. (a) A packaged power-generating insole with built-in flexible multi-layered TENGs. Reproduced with permission [132]. Copyright 2013, Elsevier. (b) A multilayer TENG embedded into the sole to exploit human biomechanical energy. Reproduced with permission [133]. Copyright 2015, Springer Nature. (c) A soft TENG fabricated by elastomeric materials and a helix inner electrode sticking on a tube with the dielectric layer and outer electrode. Reproduced with permission [119]. Copyright 2016, Springer Nature. (d) A TENG with a multilayer elastomeric structure with closely stacked arches as basic functional units as a continuous energy source for wearable electronics. Reproduced with permission [120]. Copyright 2017, John Wiley & Sons. (e) A practical, ultraflexible, and three-dimensional TENG fabricated by 3D printing. Reproduced with permission [134]. Copyright 2018, Elsevier. (f) Stretchable porous carbon nanotube-elastomer hybrid nanocomposite for harvesting mechanical energy and detecting motion types. Reproduced with permission [135]. Copyright 2017, John Wiley & Sons. (g) A TENG-based smart insole for multifunctional gait monitoring. Reproduced with permission [136]. Copyright 2019, John Wiley & Sons.