Formamidinium_lead_iodide Step Titanate SKKU FrictionalForce SurfaceOxidation TCS Conducting PolycrystallineFerroelectricBCZT NTU MoS2 DIWafer Ni81Fe19 membrane Workfunction norganic Pinpoint PFM Dimethicone YszSubstrate TemperatureControllerAFM Floppy CeramicCapacitor Non-ContactMode Semiconductor kelvin probe force microscopy Conductance flakes 2-vinylpyridine Organic Transparent KPFM Microchannel cannabidiol Inorganic Tin sulfide