F14H20 CntFilm DOE Growth Tapping Bio Electical&Electronics Patterns MESA structure UnivCollegeLondon doped layers Cobalt-dopedIronOxide ito_film WWafer MagneticPhase NUSNNI MonoLayer SAM LeakageCurrent PvdfBead piezoelectric force microscopy AEAPDES 3-hexylthiophene TungstenThinFilmDeposition SmallScan medical PECurve EFMAmplitude HumanHair Sio2 strontiu_titanate contact CrossSection Blend