Sapphire Mechanical&nanotechnology layers NanoLithography INSPParis Scanning_Thermal_Microscopy NeodymiumMagnets Step self-assembly small_scan mono_layer CntFilm AmplitudeModulation fluorocarbon ConductiveAFM Subhajjit CrAu Wafer LMF organic_polymer Polarization FloppyDisk Praseodymium PyroelectricDetector ElectroChemical PolyvinylAcetate Forevision Wonseok HexagonalBN Ucl Force-distance Beads BTO Titanate Optic