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. Author manuscript; available in PMC: 2022 Sep 24.
Published in final edited form as: Acc Mater Res. 2021 Aug 23;2(9):739–750. doi: 10.1021/accountsmr.1c00078

Figure 2.

Figure 2.

NG as a self-sustainable power supply. (a) Working mechanism of PENG. (b) ZnO-MW based i-PENG harvesting energy from a rat heart. Reproduced with permission from ref 28. Copyright 2010 Wiley-VCH. (c) Digital image of a PVDF-based NG (i) and its cardiac energy harvesting by wrapping around the aorta (ii). Reproduced with permission from ref 33. Copyright 2016 Elsevier. (d) Perovskite ceramic-based i-PENGs: (i) a PZT-based PENG operating on a porcine heart and (ii) a PENG built on PMN–PT thin films (Reproduced with permission from ref 18. Copyright 2017 Wiley-VCH); (iii) a PENG built on lead-free KNN thin films. (Reproduced with permission from ref 31. Copyright 2017 American Institute of Physics). (e)Working mechanism of CS-mode TENG. (f) Dense nanowire array created by ICP on a polymer surface. Reproduced with permission from ref 17. Copyright 2019 Wiley-VCH. (g) Multilayered TENG designed for cardiac applications. Reproduced with permission from ref 16. Copyright 2016 American Chemical Society.