strontiu_titanate atomic_steps H-BN self-assembled_monolayer Piezo India LateralForceMicroscopy alkanes Holes CuParticle ContactMode SingleCrystal Metal-organicComplex Formamidinium_lead_iodide DLaTGS ScanningSpreadingResistanceMicroscopy AmplitudeModulation Glass SolarCell OrganicSemiconductor ferromagnetic Switching TiO2 SurfaceChange AdhesionEnergy CntFilm StainlessSteel ContactModeDot HBN Friction Crystal ThinFilm Barium_titanate doped Neodymium