Table 1.
Surface composition (%wt) evaluated by X-ray photo electron spectroscopy
| Ti | Al | V | F | |
|---|---|---|---|---|
| Bulk | 90 | 6 | 4 | 0 |
| Nanotubes | 74 | 18 | 4 | 4 |
| Etched (284 nm) nanotubes | 80 | 12 | 5 | 3 |
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