Fig. 2From: Omni-directional wind-driven triboelectric nanogenerator with cross-shaped dielectric filmOutput performances of the C-TENG and CIA-TENG using the etched PTFE film at a wind speed of 9 m s− 1; Voc, Isc and output power density of a–c C-TENG, and d–f CIA-TENG, respectivelyBack to article page