Fig. 6From: Modulation of Morphology and Optical Property of Multi-Metallic PdAuAg and PdAg Alloy NanostructuresFabrication of bi-metallic PdAg nanostructures on saaphire (0001) by the control of annealing time with the Pd150 nm/Ag80 nm bi-layers annealed at 850 °C (bi-layers). a–d SEM images. a-1–d-1 Corresponding AFM side-views (10 × 10 μm2). a-2–d-2 Cross-sectional line profiles. e, f Plots of Rq and SARBack to article page