FFM FM_KPFM epitaxy DOE AmplitudeModulation NCM AnodizedAluminumOxide mfm_amplitude Styrene 2d_materials Step ThinFilm Annealing Defects VinylAlcohol Stiffness OpticalWaveguides light_emitting Fe_film Mechinical Biology Chrome Typhimurium Photovoltaics PhaseImaging PolyimideFilm Electical&Electronics Pinpoint PFM OrganicCompound PDMS graphene_hybrid Fujian EFMAmplitude cannabidiol KPFM