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. 2017 Dec 11;7:17290. doi: 10.1038/s41598-017-17791-3

Figure 4.

Figure 4

The resonance frequency ƒr and the voltage Vpp at ƒr were plotted as functions of the stress for two different samples: (a) G/PVDF/G device and (b) M/PVDF/M device. The left axis indicates the peak-to-peak voltage scale, and the right shows the resonance frequencies.