HDD NCM Gold MagneticForce BloodCell self_assembly Growth Mechanical PolyimideFilm Zhi molecule Oxidation MESA structure Praseodymium Mechanical&nanotechnology Wang GranadaUniv ScanningTunnelingMicroscopy DOE HfO2 SiliconeOxide mechanical_property Ptfe MeltingPoint BoronNitride Pattern norganic Current Collagen EFMAmplitude Vacuum Heat PolymerPatterns MetalCompound InsulatorFilm