organic_polymer LDPE Ptfe HydroGel FrequencyModulation ScanningTunnelingMicroscopy MagneticPhase norganic Boundary Zhi Cobalt-dopedIronOxide blended polymers Alkane Defects Molybdenum_disulfide Nickel Polydimethylsiloxane PDMS PpLdpe Boron STM ScanningThermalMicroscopy Lateral_Force_Microscopy StyreneBeads Potential HighAspect ImideMonomer HardDiskMedia Platinum lithography CrystalGrowing Vanadate atomic_steps TempControl Dimethicone