GaN Chungnam_National_University BiasMode CuSubstrate pinpoint mode LiBattery WWafer ForceMapping nanobar SicMosfet KPFM SRAM NanoLithography molecular_self_assembly Polydimethylsiloxane SmallScan EFMAmplitude Holes Metal-organicComplex PtfeFilter EFM ConductiveAFM organic_polymer IIT-chennai fluoroalkane PrCurve Tungsten ElectrostaticForceMicroscopy AmplitudeModulation Lateral high_resolution hard_disk PvdfFilm Implant Phthalocyanine