Roughness BFO BariumTitanate Potential Sperm InsulatorFilm Gong SFAs Fet LogAmplifier Reduction Implant fifber Filter SrTiO3 Korea piezoelectric force microscopy Polyurethane aluminum_nitride self-assembled_monolayer KAIST KPFM SurfaceOxidation ScanningThermalMicroscopy Fe_film LaAlO3 Array PetruPoni_Institute IMT_Bucharest phase_change LowDensityPolyethylene SRAM Yeditepe 2-vinylpyridine PtfeFilter