Ptfe align Force-distance HexacontaneFilm Ferrite SKPM Temasek_Lab DNA Ananth Chemical Vapor Deposition blended polymers solar_cell NCM Ucl epitaxy Polymer HardDiskMedia DOE GaP Vanadate BismuthVanadate silicon_oxide vertical_PFM CrAu LowDensityPolyethylene GlassTemp Ni-FeAlloy SFAs WWafer Vacuum Scratch gallium_nitride ScanningTunnelingMicroscopy CNT polyvinyl acetate