TPU FastScan YttriaStabilizedZirconia Patterns Ram Liquid Roughness piezoelectric force microscopy Magnetic NeodymiumMagnets Bio Mfm AEAPDES tip_bias_mode MeltingPoint Plug Thermoplastic_polyurethane GaP AtomicSteps Magnets ferromagnetic Conducting HOPG Topography Electrode AmplitudeModulation Lateral Array cross section SmallScan heterojunctions Stiffness AIN Copper CrAu