Fig. 3

TEM images of Fe nanoparticle arrays with different deposition rates: a 0.3 Å s⁻¹, b 0.5 Å s⁻¹, c 0.7 Å s⁻¹. The insets show the fast Fourier transform of each spatial distribution. d Histograms of nanoparticle numbers contained within an individual monolayer domain in the nanoparticle arrays deposited with different deposition rates. The average nanoparticle numbers within an individual monolayer domain are counted to 77, 55, 39, and 27 for deposition rates of 0.1 Å s⁻¹, 0.3 Å s⁻¹, 0.5 Å s⁻¹, and 0.7 Å s⁻¹, respectively. e Radial distribution function of the Fe nanoparticle arrays with different deposition rates