Fig. 1: Electrical output performance of PENGs under different human motions.
From: Advances in flexible piezoelectrics for wearable and implantable medical devices

Output voltage generated from BTO-GFEC/PVDF-based PENG subjected to different body movements: a Fist beating, b Finger tapping and c Elbow bending104. Reproduced with permission. Copyright 2024, John Wiley and Sons. d Charging curves of capacitors powered by the PVDF/CsPbBr3/Ti3C2Tx-based PENG. e Output voltage of the PVDF/CsPbBr3/Ti3C2Tx-based PENG under foot stepping105. Reproduced with permission. Copyright 2023, John Wiley and Sons. f Schematic illustration of the prepared BCZT@PDA/PLA-based PENG. g VOC and h ISC of the BCZT@PDA/PLA-based PENG. i Charging curves of the BCZT@PDA/PLA-based PENG. (Insets show a zoomed-in portion of the charging curve.)106 Reproduced with permission. Copyright 2021, Elsevier.