TipBiasMode Leakage StrontiuTitanate KAIST fe_nd_b ReflexLens Piezo SurfaceOxidation Ferroelectric MESA structure cannabis LiquidCell FFM Techcomp Neodymium tip_bias_mode AdhesionForce DeoxyribonucleicAcid ferromagnetic polymeric_arrays Polyethylene Etch Magnetic Cobalt-dopedIronOxide KPFM Tungsten_disulfide ForceMapping PolyimideFilm Spain Hole ForceVolumeMapping Annealed Calcium SSRM OxideLayer