Piezoelectric sensors and methods and apparatuses for producing piezoelectric sensors

Abstract

Piezoelectric devices and methods and apparatus for producing piezoelectric devices. Such a method includes printing a poly(vinylidene fluoride) (PVdF) film having a first side and a second side to form a dielectric, printing a first electrode on the first side of the PVdF film, and printing a second electrode on the second side of the PVdF film. An apparatus for producing a piezoelectric device includes a corona poling apparatus having an anode with an electrically conductive ionizer needle, a cathode spaced apart from and facing the ionizer needle, and a shield surrounding the ionizer needle. The shield focuses ions created during corona discharge toward a location between the ionizer needle and the cathode.

Dependencies are inferred from the claim text.