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The aspect ratio of ZnO NWs with the variation of ammonium hydroxide.
| Ammonia concentration mM | Average length µm | Aspect Ratio Tip | Aspect ratio Base |
|---|---|---|---|
| 0 | 4.6 | 22 ± 6 | 9 ± 1 |
| 10 | 4.7 | 29 ± 4 | 10 ± 1 |
| 20 | 4.8 | 30 ± 4 | 12 ± 2 |
| 30 | 3.4 | 19 ± 3 | 10 ± 2 |
| 40 | 2.2 | 20 ± 3 | 10 ± 2 |
