SFAs MonoLayer OpticalWaveguide PinpointPFM thermal_property FM_SKPM mono_layer PhaseChange Electical&Electronics ElectrostaticForceMicroscopy BiasMode Tin disulfide Conductive AFM HexagonalBN Scratch Organic UnivMaryland Defects SiliconOxide GaN AtomicLayer margarine TipBiasMode Corrosion ScanningKelvinProbeMicroscopy Wafer biocompatible Zhi Mechinical Phosphide ContactMode molecular_beam C_AFM Ram dichalcogenide