Lattice Polyvinylidene_fluoride IVSpectroscopy amplitude_modulation Ferroelectric AM-KPFM AM_SKPM Spincast BaTiO3 BoronNitride GaP BTO plastic Lift PolycrystallineFerroelectricBCZT Chemical Vapor Deposition aluminum_nitride ScanningTunnelingMicroscopy Tin disulfide HafniumDioxide Pinpoint Sphere Polyimide Filter Biology LDPE Cancer EFM TPU PhthalocyaninePraseodymium Gallium BiasMode Optic Ecoli contact