Fig. 5

Evolution of AgPt nanoclusters and Pt NPs by the dewetting of Ag_21nm/Pt_4.5nm bilayers between 500 °C and 900 °C for 120 s. a–d AFM side-views of 500 × 500 nm². (a-1)–(d-1) Cross-sectional line profiles. e Summary plots of AD and AH of isolated NPs above 650 °C. f, g Summary plots of Rq and SAR. h Plot of at % of Ag and Pt at increased temperatures. i, j EDS spectra of the samples annealed at 500 and 700 °C. The elemental composition of Ag and Pt are enclosed in the EDS spectra