Fig. 2: Material and structural optimizations of the DS-TENG.

a Preparation of the fur as the positive tribomaterial for the TENG. The output voltage of the DS-TENG: (b) with different fur lengths, (c) with different tribomaterials, (d) with different thicknesses of fluorinated ethylene propylene, (e) with different numbers of electrodes. Error bars represent the standard deviation over three independent measurements. f Transmission curve and (g) transmission hysteresis curve of the active and passive magnets at different transmission clearances.