SPMLabs Zagreb MembraneFilter HighResolution Treatment AEAPDES Polyaniline FM_SKPM piezoelectric force microscopy PatternedSapphireSubstrat SiliconeOxide InLiquid SFAs Stiffness SrTiO3 Conductive AFM Gallium_Arsenide Polystyrene Pattern FloppyDisk Adhesive non_contact PinpointNanomechanicalMode FM_KPFM PVAC Metal-organicComplex conductive CastIron ferromagnetic SoftSample Ram lithography Glass Ucl Cross-section