BismuthVanadate PetruPoni_Institute Magnetic Styrene CNT ferromagnetic ScanningKelvinProbeMicroscopy Device LateralPFM Conductance Potential DNAProtein Granada alkanes HardDiskMedia Memory BismuthFerrite KelvinProbeForceMicroscopy biocompatible LithiumNiobate PolycrystallineFerroelectricBCZT Polyurethane VerticalPFM conductive PolyStylene Water TemperatureControlledAFM PpLdpe TransitionMetal Polyaniline lift_mode Electical&Electronics SKPM AmplitudeModulation Oxide