Fig. 4From: Modulation of Morphology and Optical Property of Multi-Metallic PdAuAg and PdAg Alloy NanostructuresPdAuAg nanostructures based on the multi-layers of 15 nm Pd/Au/Ag films (15 layers) with 1 nm each. The annealing temperature was systematically varied between 400 and 900 °C for 450 s (multi-layers). a–f AFM top views (3 × 3 μm2). a-1–f-1 Magnified AFM side views (750 × 750 nm2). a-2–f-2 Cross-sectional line profilesBack to article page