Table 2.
Properties of the PVDF layer.
| Material Property | Symbol | Value |
|---|---|---|
| Relative permittivity | εr | 9.5 ± 1 |
| Piezoelectric constant | d31 | 17 × 10−12 C/N |
| Elastic modulus | Y | 2500 MPa |
| PVDF layer thickness | h | 30 μm |
| Yield strength | σs | 45∼55 MPa |
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