Ferroelectric polymers are a type of electronic electroactive polymer (EAP) that is similar to ferromagnets in the sense that once an electric field is applied to the material, polarized domains within the material will be aligned, creating a permanent polarization that can be reversed or switched.
Polyvinylidene fluoride (PVDF) is a typical ferroelectric polymer that exhibits efficient piezoelectric and pyroelectric properties.
Applications:
Ferroelectric polymers, such as PVDF, are used in acoustic transducers and electromechanical actuators because of their inherent piezoelectric response and as heat sensors because of their inherent pyroelectric response.
Figure57.1 Chemical structure ...
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