fluoroaalkane Tungsten NiFe Aluminum PolymerPatterns EFMAmplitude GaN ScanningTunnelingMicroscopy non_contact strontiu_titanate ThermalConductivity Tin disulfide Liquid hydrocarbon chemical_compound BariumTitanate TemperatureControllerAFM 2d_materials Permalloy H-BN vertical_PFM molecular_self_assembly AnodizedAluminumOxide Hole ForceMapping ring shape Defects ScratchMode HfO2 WS2 Pzt Array OpticalModulator Hexatriacontane Optoelectronic