Flexible and low cost piezoelectric composites with high d33 values

The disclosure concerns filled a polymer composite comprising a piezoelectric filler and a polymer resin. The composite may exhibit a piezoelectric coefficient d33 of greater than 30 pC/N when measured according to the Berlincourt Method using a d33 piezometer and a density of less than 5 g/cc according to the Archimedes method

Shape-controlled ceramic fillers for enhanced piezoelectric properties of structured composites

A lead-free lithium doped potassium sodium niobate piezoelectric ceramic material powdered form and having a single crystalline phase and uses thereof are described. Methods of making the said piezoelectric ceramic material are also described