Ferrite AmplitudeModulation Mobile CntFilm NeodymiumMagnets ScanningKelvinProbeMicroscopy Polyethylene MolecularSelfAssembly FM-KPFM INSPParis PhaseChange Phosphide frequency_modulation Etch PinpointNanomechanicalMode FrictionForce Nanofiber Pattern Biofilm C60H122 LowDensityPolyethylene Patterns LiftHeight ring shape FM_SKPM Conductance medical Sidewall Non-ContactMode #EC Polyaniline Blood Fendb Foil Tin disulfide