PiezoelectricForceMicroscopy layers TungstenThinFilmDeposition KevlarFiber Hysteresys HumanHair PrCurve hetero_structure hard_disk sputter Sphere LifeScience Ca10(PO4)6(OH)2 ElectroChemical plastics Dr.JurekSadowski self-assembled_monolayer Dopped DOE light_emitting Scratch Fet PvdfFilm BCZT Vanadate Co/Cr/Pt PFM SurfaceChange SSRM UTEM gallium_nitride thermal_conductivity biocompatible hard_disk_media mono_layer