PtfeMembrane Alkane atomic_layer neodymium_magnets Singapore MonoLayer Defect Lateral_Force_Microscopy SetpointMode OrganicCompound Tapping Resistance single_layer Neodymium ScanningTunnelingMicroscopy Magnetic Force Microscopy PhaseTransition semifluorinated alkane C_AFM phase_change Nanopattern self-assembled_monolayer oxide_layer CrossSection WS2 Worcester_Polytechnic_Institute SelfAssembly Ito Domain Electrode LightEmission ScratchMode CastIron Jason Ni81Fe19