CopperFoil Piezoelectric ConductingPolymer Vanadate hydrocarbon Copolymer Steps FrequencyModulation Monisha Led Solar Permalloy SmallScan Oxidation Polarization Polypropylene MfmAmplitude NUS_Physics Ceramic LightEmiting Magnetic PvdfFilm Topography biocompatible HOPG Formamidinium_lead_iodide MfmPhase lift_mode strontiu_titanate Materials BCZT BiasMode NUSNNI InorganicCompound temp_control