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Table 4

Average properties† of the PZTs and the particle.

Property Symbol Measured value
Piezoelectric constant d33 239 × 10-12 m V-1
Capacitance C 14.2 nF
PZT’s reduced Young’s modulus EPZT 74.5 GPa
Particle’s reduced Young’s modulus Ep > 15 MPa
Particle’s bulk density ρ ≳ 250 kg m-3

Notes.

(†)

Ep and ρ were measured for aerogel (See Sect. 5.2 and Appendix B).

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