Poled PVDF-TrFE Copolymer piezoelectric film with 100 nm thick gold electrode fully covered both surfaces.
Composition: VDF/TrFE (VF3) = 80/20 mol, 75/25 mol, 70/30 mol [Other compositions can be special produced, 65/35, 55/45, and 50/50)
Can be used for Ultrasound Fingerprint Sensor
Thickness: 3 um to 100 um, other thickness can be produced based on request
d33 >20 pC/N.
d31=d32 ~ 8 pC/N
Dielectric Constant: ~8.0-8.5
Coupling Factor: >0.30
Poisson's ratio: ~0.225
Density: 1.80 g/cc
Resonance Frequency: thickness related
Curie Transition (80/20 mol): >130 C
Operation: <120 C
Curie Transition (75/25 mol): >110 C
Operation: <100 C
Curie Transition (70/30 mol): >90 C
Operation: <80 C
For piezo sensors. ultrashound transducers.
With 100 nm gold electrode both surfaces. It has 6 mm diameter on positive side and 8 mm on the negative side, each with a tail for electrical connection. Effective area is 6 mm diameter. Each sheet has 32 active ultrasound transducers.
Also sell in smaller package, such as 8 transducer pack.