Subhajjit FloppyDisk AAO blended polymers Moire suspended_graphene AnodizedAluminumOxide dichalcogenide PetruPoni ring shape Galfenol CuFoil ScanningTunnelingMicroscopy PhaseTransition InsulatorFilm OrganicCompound Nickel Self-assembledMonolayer ContactModeDot SurfaceOxidation gallium_nitride Domain PetruPoni_Institute CuSubstrate Conducting MultiferroicMaterials Morphology Electrical&Electronics MagneticForce SKKU LaAlO3 DOE PhaseChange Vacuum conductive