PpLdpe Alloy tip_bias_mode Sperm optoelectronics graphene_hybrid HfO2 LightEmiting GlassTemp MagneticForce atomic_steps amplitude_modulation Temperature Butterfly small_scan kelvin probe force microscopy TungstenThinFilmDeposition fe_nd_b NanoLithography Adhesive AM-KPFM PolyvinylideneFluoride NCM\ Domain LiquidImaging HexacontaneFilm TransitionMetal PANI MolecularSelfAssembly LiNbO3 Memory MagneticForceMicroscopy HexagonalBN Cobalt-dopedIronOxide PECurve