Poled PVDF piezoelectric film 100 um thick. Uniaxially oriented with high d31 of 29-31 pC/N. d33 is around 28 pC/N and modulus is around 2.3 GPa.
with optically ransparent ITO Electrode with 150 ohm/sq resistance both surfaces.
One sheet with size is 210 mm x 280 mm, or 100 mm x 100 mm
Great for piezoelectric piezo eneregy harvesting, piezo sensors, microphones, transparent flexible loudspeakers, actuators.
Also for electroactive polymer EAP actuator, soft actuator, robotics
https://youtu.be/gCjqgMVjHGk Optically transparent flexible piezo speaker
Uniaxially oriented with high d31 (but almost no d32).