PetruPoni_Institute AEAPDES Oxide PvdfFilm Dental FM_SKPM Barium_titanate mono_layer Gallium_Arsenide Polymer ContactModeDots HexagonalBoronNitride heterojunctions SmalScan HafniumDioxide FrictionalForceMicroscopy PinpointPFM PS_PVAC PVAC Oxidation Thermal Carbon Chemical_Vapor_Deposition Permalloy UTEM IISCBangalore Polarization amplitude_modulation Ferrite FastScan Phase norganic ContactMode InorganicCompound ThermalProperties