TappingMode NUS_NNI_Nanocore Mapping KPFM LiBattery HanyangUniv Perovskite membrane CuFoil Step FrictionalForceMicroscopy IndiumTinOxide biocompatible PMNPT Polyaniline Cobalt-dopedIronOxide Pyroelectric Ceramics Led TungstenThinFilmDeposition GlassTemperature Styrene MultiferroicMaterials Roughness ContactMode RedBloodCell Gong TriGlycineSulphate ForceVolume VortexCore MLCC Thermal LateralForceMicroscopy Boundary Electronics