SICM piezoelectric force microscopy epitaxy PtfeMembrane ItoGlass RedBloodCell MoS2 Chungnam_National_University Tungsten_disulfide PinpointNanomechanicalMode TipBiasMode AtomicSteps MagneticPhase ForceVolumeImage Aluminum AAO StrontiuTitanate Magnets Silver Cell Dental Magnetic Force Microscopy Collagen PS_PVAC Sic VortexCore INSPParis Thermoplastic_polyurethane Polydimethylsiloxane Biology FrequencyModulation CuSubstrate Transparent Wafer Oxidation