Figure 6
From: Strongly confined localized surface plasmon resonance (LSPR) bands of Pt, AgPt, AgAuPt nanoparticles
Evolution of large AgAuPt and AuPt NPs on sapphire (0001) with the Ag16.5nm/Au4.5nm/Pt4.5nm tri-layers annealed between 500 and 900 °C for 120 s. (a–f) AFM top-views (5 × 5 µm2). Insets show the corresponding FFT patterns. (a-1) – (f-1) Enlarged AFM 3D side-views of typical NPs at different temperature. (a-2) – (f-2) Corresponding line profiles across the typical NPs. (g) Summary of AD and AH of isolated AuAgPt and AuPt NPs. (h) Summary of Rq and SAR. (i,j) EDS spectra of the samples at 500 and 700 °C. (j) Summary plots of at % of Ag, Au and Pt.
