484381.fig.004a
(a) Regulation layer locates at top and substrate locates at bottom
484381.fig.004b
(b) Regulation layer locates in the middle and substrate locates at bottom
484381.fig.004c
(c) Regulation layer locates at top and substrate locates in the middle
484381.fig.004d
(d) Regulation layer locates at bottom and substrate locates in the middle
Figure 4: Schemes of the piezoelectric generator based on capacitor FM.