Biaxially oriented PVDF-HFP film with thickness from 2 um or 3 um. High dielectric constant >10, High Dielectric Breakdown Strength > 600 MV/m.
With one surface coated with 30 nm gold electrode.
For electrostatic actuators, electrostatic adhesive, electrostatic brake, electrostatic haptics, electrostatic chuck, etc. As the electrostatic force is proportional to the dielectric constant, and reversly proportional to the square of the thickness, this film can generte quite high electrostatic force even at low electric voltage.
For example, for 2 um thick film, at 200 V (100 V/um), the electrostatic force can be 89 N (9 kg) per square cm.
The biaxial orientation significantly improved the dielectric breakdown strength (energy density) and reduced the leakage current and energy loss.
This film is NOT poled and it is non-piezoelectric.
HIGH ENERGY DENSITY FILM CAPACITORS https://pdfs.semanticscholar.org/bb9b/3f453fa4a838607814e4a77800a66ebb80f9.pdf
Science: A Dielectric Polymer with High Electric Energy Density and Fast Discharge Speed