NCM EFM semifluorinated_alkanes TiO2 SmalScan lithography NUS_Physics silicon_oxide CNT FrequencyModulation Layer CrystalGrowing vertical_PFM PpLdpe BTO Melt CP-AFM Topography multi_layer light_emission flakes CBD Calcite GaP India TungstenDeposition Grain Defects NiFe Blend non_contact PolyimideFilm optoelectronics Etch bias_mode