Fig. 11.

Blow-driven TENG as an active alcohol breathalyzer. a Schematic illustrations of the functional components of the blow-driven triboelectric nanogenerator, which mainly consists of three parts, a rotator, a stator and a soft elastic. b A SEM image of the FEP polymer NWs (scale bar, 500 nm). c A photograph of the as-fabricated stator (scale bar, 1 cm). d A schematic illustration of an as-fabricated device (scale bar, 2 cm). e The variation of the output voltage and current with external load resistances under a fixed blowing speed of 6 m/s (the inset shows the measurement circuit diagram). f A real-time continuously measured voltage profile to show the dynamic response to ambient alcohol concentrations. g A schematic illustration showing the self-power breathalyzer. Figures adapted from [102]