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Table 1 Characteristic features of substrates annealed at different temperatures and nanostructures grown on these substrates

From: Effects of substrate annealing on the gold-catalyzed growth of ZnO nanostructures

Substrate anneal T (°C) RMS roughness (nm) Terrace width (nm) Gold droplet size (nm) Gold droplet density (cm-2) Nanostructure density (cm-2)
As-received 0.46 N/A 24.5 ± 10.8 7.3 · 1010 2.53 · 108
1,000 0.36 30-150 22.3 ± 10.2 7.0 · 1010 4.21 · 108
1,200 0.24 100-700 24.0 ± 9.3 6.8 · 1010 1.19 · 109
1,400 0.16 100-350 19.4 ± 6.5 1.4 · 1011 9.87 · 108