What family of crystals is PZT and PVDF? What is responsible for the pseudoelasticity property of Nitinol? who first discovered piezoelectric properties of PVDF?
PZT belongs to ceramics and also known as Lead zirconate titanate. It is a ceramic perovskite material that shows a marked piezoelectric effect.PVDF belongs to polymer.PVDF (Polyvinylidene fluoride) is a family of semi-crystalline fluoropolymers.
Nitinol is deformed upon action by some external disturbances and remains in same condition mean doesn't regain it's original shape by itself but above 40 degree celcius temperature it regains its shape so temperature is responsible for it's pseudoelasticity.
Dr. Heiji Kawai first discovered the piezoelectric properties of PVDF in 1969.