ConductiveAFM IVSpectroscopy ScratchMode AdhesionEnergy non_contact Ferrite Steps Iron Hydroxyapatite self-assembled_monolayer Step InLiquid PhthalocyaninePraseodymium Hexatriacontane 2-vinylpyridine Vortex chemical_compound Croatia Writing Logo CuSubstrate NUS_NNI_Nanocore Oxide Sio2 Array mono_layer PVAP3HT CancerCell PVAC CarbonNanotube Metal-organicComplex semifluorinated_alkanes Fluoride MagneticPhase PMNPT