KelvinProbeForceMicroscopy LithiumNiobate Ucl AnodizedAluminumOxide ForceMapping CuFoil ScanningSpreadingResistanceMicroscopy Vacuum Memory PolymerBlend HiVacuum light_emission LiftMode organic_polymer ferromagnetic LiBattery MfmAmplitude Polypropylene Holes ring shape self-assembly Celebration Gallium_Arsenide pinpoint mode 2dMaterials LeakageCurrent Optical Strontium Writing MagneticPhase Fujian Copper Change CeNSE_IISc Platinum