Potential frequency_modulation Pattern EFMAmplitude Chemical_Vapor_Deposition hetero_structure SPMLabs Polyethylene ContactModeDots FrequencyModulation MeltingPoint ContactModeDot Oxidation Flake Defect Tin sulfide organic_polymer flakes AM_KPFM NeodymiumMagnets LateralPFM FrictionalForceMicroscopy Polyurethane TyphimuriumBiofilm Polyvinylidene_fluoride Gallium_Arsenide Phosphide ForceVolumeImage heterojunctions Aluminium_Oxide piezoelectric force microscopy NiFe Jason Aggregated_molecules Sic