Electrical&Electronics Formamidinium_lead_iodide pinpoint mode Metal Composite PDMS Cross-section PANI Fe_film PinPointMode atomic_steps temp exfoliate I-VSpectroscopy rubber light_emission kelvin probe force microscopy Hexylthiophene vertical_PFM Gallium Phthalocyanine Calcite BariumTitanate BloodCell Hexatriacontane UnivOfMaryland Melt Lateral non_contact CNT BlockCopolymer CancerCell food Lateral_Force_Microscopy Topography