TipBiasMode Fendb PinpointPFM Mosfet Barium_titanate ChemicalCompound FastScan Pinpoint PFM SiWafer Led molecular_beam Perovskite INSPParis Array InLiquid DataStorage SrO TappingMode pinpoint mode Hole hetero_structure Zhi FM-KPFM LiquidImaging Hexacontane Electrode FailureAnlaysis SKKU ElectroDeposition Ceramic Iron LiBattery VerticalPFM neodymium_magnets frequency_modulation