conductive FastScan Dental Formamidinium_lead_iodide SurfaceOxidation mechanical_property LiquidCell LiftMode TipBiasMode UnivOfMaryland ring shape Tin sulfide Electical&Electronics PyroelectricDetector FAPbI3 Bismuth Ucl VinylAlcohol MechanicalProperties LightEmiting FrictionForce MoirePattern NCM\ block_copolymer Styrene PiezoelectricForceMicroscopy Cobalt-dopedIronOxide Nanostructure Topography SrO NanoLithography PDMS Electronics dielectric_trench 2d_materials