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. 2020 Aug 10;6:56. doi: 10.1038/s41378-020-0163-1

Fig. 6. Output performance characterizations of the W-TENG for sinusoidal excitations in the horizontal axial and vertical lateral directions.

Fig. 6

a Open-circuit voltage waveforms for the two different directions at 6m/s2; b output voltage amplitude variations for the two directions with excitation acceleration; c output voltage and power optimizations for the horizontal axial direction with different load resistances ranging from 3 to 105 MΩ; d output performance stability of the W-TENG during continuous operation over ~37,800 cycles; e enlarged view of output voltage waveforms; f output voltage and power optimizations with different load resistances ranging from 3 to 105 MΩ for the vertical lateral direction