Perovskite BiVO4 UnivMaryland I-VSpectroscopy nanomechanical TappingMode mono_layer Change TempControl LeakageCurrent Trench GlassTemperature Corrosion alkanes PolycrystallineFerroelectricBCZT AlkaneFilm Conduct Aggregated_molecules Sperm Tungsten_disulfide HardDiskMedia Gold Growing Galfenol Techcomp Hexylthiophene CompactDisk temp Fe_film Conductive AFM bias_mode self-assembled_monolayer PhaseTransition light_emitting Cell