Pinpoint PFM Pattern Gold AtomicLayer Chungnam_National_University CrossSection BariumTitanate FM-KPFM Scanning_Thermal_Microscopy MeltingPoint Workfunction Wang Sic Piezoresponse Al2O3 heterojunctions Cell mechanical property layers DiffractiveOpticalElements MESA structure TemperatureControllerAFM Molybdenum BCZT Polytetrafluoroethylene ring shape Potential Granada MultiferroicMaterials Hydroxyapatite LeakageCurrent STM hard_disk Thermal FAFailureAnlaysis