Nanotechnology Korea gallium_nitride ScanningSpreadingResistanceMicroscopy Al2O3 Magnetic Force Microscopy Annealed graphene_hybrid SingleCrystal Austenite NCM\ DIWafer Piezoelectric Imprint STM NeodymiumMagnets polyvinyl acetate Hair India Microchannel chemical_compound ContactModeDot fluoroaalkane Spincast Polypropylene PhaseImaging Granada Implant Sic HanyangUniv AM_KPFM ForceVolumeMapping self_assembly atomic_steps CaMnO3