Figure 7
From: Graphene Oxide Papers in Nanogenerators for Self-Powered Humidity Sensing by Finger Tapping
Sensing mechanism. (a) Schematic of the fabricated GO TENG. Inset: SEM image of the surface of GO paper. (b) Electrical current generation between electrodes. (c) Reducing the current in the presence of medium humidity. Inset: adsorbed water molecules through double hydrogen bonding. (d) Minimizing the current amount under high humidity and formation of a continuous water layer. Inset: adsorbed water molecules through single hydrogen bonding.
