BiVO4 ContactModeDot AIN Sidewall SicMosfet Hydroxyapatite SolarCell Korea Spain MembraneFilter Annealed EPFL atomic_steps Collagen CrAu PinpointPFM oxide_layer fluorocarbon ScanningKelvinProbeMicroscopy chemical_compound rubber Aggregated_molecules PvdfFilm Optoelectronic TemperatureControllerStage blended polymers polymeric_arrays cross section UnivMaryland Resistance MultiferroicMaterials Sulfur Butterfly mfm_amplitude TemperatureControllerAFM