Figure 4
From: Graphene Oxide Papers in Nanogenerators for Self-Powered Humidity Sensing by Finger Tapping
Characterization of the GO TENG. (a) Dependence of the voltage and current peak on the external loading resistance. (b) Charging of capacitors with three different values of capacitance. (c) Lightening of 44 diodes by assistance of the GO TENG.
