SPM study of ferroelectric properties of vinylidene fluoride and trifluoroethylene copolymer

Piezoelectric response force microscopy, PFM, is a kind of SPM technique. It measures the change of the position of surface in accordance with the applied voltage, giving local piezoelectric activity. This method is widely applied to ferroelectric ceramics as well as to ferroelectric polymers. We used this method to study the dynamics of polarization reversal in thin films of VDF/TrFE copolymer.