Figure 8

(A) Power harvested as a function of the cantilever excitation frequency for a = 7.3 g, \({R}_{load}\)=15 \(\mathrm{M\Omega }\), \(E=96\mathrm{V}\). The resonant frequency \({f}_{opt}\)(40 Hz) is highlighted by a blue dashed line. (B) Power harvested as a function of the load resistance (\({R}_{load}\)) for a = 7.3 g, \({f}_{opt}\) and \(E=96\mathrm{V}\). The optimal load resistance \({R}_{opt}\) is highlighted by a blue dashed line. (C) Power harvested as a function of the acceleration amplitude, for the resonant frequency \({f}_{opt}\), \({R}_{load}\)=15 \(\mathrm{M\Omega }\), \(E=96\mathrm{V}\). (D) Power harvested as a function of the bias voltage \(E\) for a = 3.9 g (blue circles) and a = 7.3g (orange circles), at \({R}_{load}\),\({f}_{opt}.\)