Fig. 2From: Observation of Shape, Configuration, and Density of Au Nanoparticles on Various GaAs Surfaces via Deposition Amount, Annealing Temperature, and Dwelling TimeSelf-assembled Au droplets synthesized via the variation of deposition amount (2–20 nm) on GaAs (111). The resulting Au droplets are shown with AFM top views in (a–e). AFM images are 1 × 1 μm2. Cross-sectional line-profiles in (a-1)–(e-1) are acquired from the white lines in (a–e). 2-D Fourier filter transform (FFT) power spectra are shown in (a-2)–(e-2). f–i Average height, lateral diameter, density, and root-mean-squared (RMS) surface roughness. Error bars are ±5 %Back to article page