Fig. 8.

(a) Calibration curve derived from FFT analysis of an electrical response of the SbSeI nanogenerator and (b) FFT spectrum of the open-circuit voltage response to ultrasound excitation emitted by the Sonic-6 reactor (Polsonic). Black points in (a) represent experimental values of the squared total RMS voltage as a function of acoustic power. Solid red curve shows the best fit dependence (6). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)