HOPG Polyurethane Conductive AFM strontiu_titanate Ram hard_disk_media nanomechanical Tape Phthalocyanine Workfunction NCM SiliconeOxide CalciumHydroxyapatite OpticalWaveguides Inorganic PrCurve Pinpoint Polyvinylidene Boundary Change HiVacuum Scratch Device NtuEee hard_disk Pores CeramicCapacitor HDD fe_nd_b SKPM Domain Nanotechnology BismuthVanadate IVSpectroscopy Electrode