Fig. 3: Ag selective etching on three-dimensional Au octahedra@Ag cube supercrystals. | Nature Communications

Fig. 3: Ag selective etching on three-dimensional Au octahedra@Ag cube supercrystals.

From: Ensemble hot-spots in 3D supercrystals of plasmonic octahedral nanoparticles in tip-to-tip configured superlattices

Fig. 3

a Schematic illustration of three-dimensional tip-to-tip octahedral supercrystal. b SEM, c STEM, and EDS image (Au/yellow, Ag/blue) of three-dimensional tip-to-tip octahedral supercrystals. d–g SEM images of tip-to-tip octahedral supercrystals with different edge sizes (32, 45, 60, and 75 nm) of octahedral blocks, corresponding FFT pattern (scale bar = 0.1 μm−1) and figures of the edge size and distance of neighboring particles.

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