self-assembled_monolayer SFAs ConductiveAFM ring shape MoS2 Kevlar DentalProsthesis Phenanthrene Nanopattern Magnetic HardDisk IVSpectroscopy VortexCore Barium_titanate StainlessSteel Phthalocyanine PolyvinylideneFluoride Composition Inorganic_Compound SurfaceChange ScanningSpreadingResistanceMicroscopy GaP SKPM CrAu Silver Ucl Fe_film LateralForce MagneticArray medical HBN DataStorage MagneticPhase LogAmplifier Non-ContactMode