A Self-Powered Triboelectric Nanosensor for PH Detection

Figure 2

Working mechanism of the fabricated TENG sensor. (a) Electrode A is partially submerged. (b) The water surface levels with the middle point of the device. (c) Electrode B is being covered by water, (d) electrode B is partially exposed, (d) electrode B is completely exposed, and (f) electrode A is partially exposed.