Yeditepe_University Gong FailureAnalysis Zhi Layer Ferrite PiezoelectricForceMicroscopy Pinpoint PFM InorganicCompound CrAu ThinFilm TipBiasMode Multiferroic_materials AEAPDES PVAP3HT Tapping plastics MetalCompound PFM ConductiveAFM conductive Sphere PinpointNanomechanicalMode Iron self_assembly Film biocompatible DOE PetruPoni Conduct Platinum Temasek_Lab Chemical_Vapor_Deposition nanobar plastic