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Table 1 Density, diameter, length, thickness, and average aspect ratio of the grown ZnO structures

From: Seed/catalyst-free growth of zinc oxide nanostructures on multilayer graphene by thermal evaporation

  Temperature (°C) Density (cm-2) Diameter of nanorods/nanoneedles (nm) Length of nanorods (nm) Thickness (nmn Average aspect ratio
This work 600 - - - ~200 -
800 6.86 × 109 50-150 200-380 - 2.85
1,000 - - - ~60 -
[1] 400 4 × 109 100 ± 10 1,000 ± 100 - 10.0
600 8 × 107 90 ± 20 4,000 ± 600 - 44.4
750 5 × 107 - 3,500 ± 500 - -
[29] 800 1.2 × 108 200-500 - - -