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ABF-STEM (left side) and HAADF-STEM (right side) images of the Pdi materials: (a) well-dispersed Pd nanoparticles with sizes between 6 and 10 nm; (b,c) Pd nanoparticles of 1–2 nm; (d) clusters of Pd atoms and HAADF-STEM images; and (e,f) Pd single atoms. For a better visualization, white circles were used.
