Figure 3
From: Graphene Oxide Papers in Nanogenerators for Self-Powered Humidity Sensing by Finger Tapping
Output signals of the fabricated GO TENG. (a) Open-circuit voltage under frequencies from 1 to 4 Hz. (b) Magnified voltage peak at frequency of 1 Hz. (c) Stability of the output voltage at 3 Hz. (d) Short-circuit current under frequencies from 1 to 4 Hz. (e) Individual current peak at 4 Hz.
