FFM Mosfet PolyimideFilm plastic C_AFM non_contact PhaseImaging Lift UnivMaryland Singapore SKPM FM_KPFM Conductance NiFe Praseodymium norganic Nanotechnology membrane HardDisk DIWafer PinpointPFM MagneticArray nanomechanical pinpoint mode Laser self_healing CaMnO3 NTU ScanningKelvinProbeMicroscopy Sulfur PyroelectricDetector phase_change Reduction BoronNitride AnodizedAluminumOxide