multi_layer EFM PolyStylene MolecularSelfAssembly CancerCell Ferrite DOE Chungnam_National_University Monisha LiftHeight PiezoelectricForceMicroscopy BiVO4 LaAlO3 Hexacontane Growth Foil Protein SolarCell Phase FFM silicon_oxide PMNPT Film SAM Reduction Graphene Sapphire PUR TiO2 3-hexylthiophene cannabidiol PvdfFilm FM_KPFM NCM Thermal