Tapping vertical_PFM organic_polymer OxideLayer Hexylthiophene VerticalPFM SolarCell TransitionMetal CeramicCapacitor LiquidCrystal ForceVolume AdhesionEnergy Annealed EvatecAG Defect Polyurethane silicon_carbide Hexacontane Polytetrafluoroethylene Indium_tin_oxide Growing self-assembly Iron Conductance Galfenol Biofilm China LFM SiWafer FM-KPFM FrequencyModulation LateralForceMicroscopy InorganicCompound Step HighResolution