CNT Nanotechnology PvdfFilm Co/Cr/Pt Molybdenum PatternedSapphireSubstrat BiFeO3 temp WPlug IIT-chennai ElectroChemical SThM Layer cross section kelvin probe force microscopy NusEce ito_film SingleLayer CalciumHydroxyapatite MeltingPoint ScanningTunnelingMicroscopy FFM ScanningThermalMicroscopy Boundary Pattern FAPbI3 CaMnO3 #Materials CP-AFM HfO2 StrontiuTitanate Tungsten_disulfide OpticalWaveguide SKKU UnivOfMaryland