Cell Holes HardDisk frequency_modulation Hexatriacontane temperature_control blended polymers silicon_carbide polyvinyl acetate PVAC Friction UnivOfMaryland AtomicSteps Terrace PhaseChange PS_PVAC Christmas Cobalt-dopedIronOxide TipBiasMode Vacuum Conductive AFM ScanningThermalMicroscopy FFM Growth Pyroelectric Defect Pattern ScanningTunnelingMicroscopy Pinpoint PFM PolyimideFilm BFO SRAM OpticalElement Polyvinylidene_fluoride mfm_amplitude