HexagonalBN NUS contact HfO2 Dental F14H20 Polyethylene Writing Nanostructure BCZT Wafer LaAlO3 Chromium Vac Deposition CntFilm China 2-vinylpyridine mechanical_property nanobar AM-KPFM NCM\ Leakage TipBiasMode Thermal HexagonalBoronNitride Fluoride INSPParis rubber SFAs semifluorinated_alkane Materials BaTiO3 Mapping hydrocarbon