tip_bias_mode Wang dielectric trench Al2O3 Flake Temperature AEAPDES DomainSwitching Vacuum Transparent ScanningKelvinProbeMicroscopy ElectrostaticForceMicroscopy NCM Electronics KelvinProbeForceMicroscopy TungstenThinFilmDeposition BoronNitride CalciumHydroxide FloppyDisk AM-KPFM PS_PVAC ScratchMode gallium_nitride InorganicCompound PinpointPFM Genetic LightEmiting Phase FrequencyModulation Indent Optic FailureAnlaysis Sapphire SolarCell Platinum