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. 2019 Oct 14;4(17):17340–17351. doi: 10.1021/acsomega.9b02066

Figure 4.

Figure 4

Large AgAuPt and AuPt alloy NPs on sapphire fabricated with the Ag55nm/Au15nm/Pt15nm tri-layers by annealing between 550 and 900 °C for 120 s. (a–f) AFM images of the alloy nanostructures. The corresponding line profiles are shown below the AFM images. (g–i) Summary plots of Rq, SAR, and atom % of Ag, Au, and Pt, respectively. (j–m) SEM image and corresponding elemental maps of Ag, Au, and Pt for the sample fabricated at 600 °C. (n, o) EDS spectra of the AgAuPt and AuPt alloy NPs at 500 and 650 °C, respectively.