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. Author manuscript; available in PMC: 2021 Nov 1.
Published in final edited form as: Nano Energy. 2020 Jul 22;77:105131. doi: 10.1016/j.nanoen.2020.105131

Fig. 2.

Fig. 2.

Mechanism of piezoelectric energy harvesting. a) Schematic of a piezoelectric energy harvesting device. Reproduced with permission [36]. Copyright 2018, Elsevier. b) Simulation of the piezoelectric potential distribution in a ZnO nanowire under axial strain. Reproduced with permission [37]. Copyright 2009, AIP Publishing LLC. c) Atomic model and the different piezopotential in tension and compression modes of the wurtzite-structured ZnO. Reproduced with permission [38]. Copyright 2017, Wiley-VCH.