Wildtype MBE INSP CrossSection FrictionalForceMicroscopy Litho FFM Barium_titanate Mechanical Steps BoronNitride temp_control bias_mode Conductivity multi_layer StrontiuTitanate STM Formamidinium_lead_iodide MagneticForce Fiber MLCC Co/Cr/Pt Sic Graphite temperature_control GaN KAIST MeltingPoint HOPG FrictionalForce membrane Flake Workfunction HfO2 fe_nd_b