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. 2022 Jun 26;22(13):4837. doi: 10.3390/s22134837

Figure 2.

Figure 2

Structures of sliding mode TENGs: (a) A wearable TENG integrated into a deformable band (Reproduced with permission [21]. Copyright 2019 The Authors); (b) A TENG with grating structures (Reproduced with permission [33]. Copyright 2019 WILEY-VCH Verlag GmbH & Co., KGaA, Weinheim, Germany).