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Surface characteristics of HA-DA-coated Co-Cr substrates.
| Sample | Dopamine on surface (nmol/cm2) | Roughness (nm) | Water contact angle (degree) |
|---|---|---|---|
| Co-Cr | – | 1.67 ± 0.24 | 77.8 ± 2.2 |
| HA-DA50 | 3.04 ± 0.09 | 1.95 ± 0.26 | 57.3 ± 2.6 |
| HA-DA100 | 4.56 ± 0.12 | 1.69 ± 0.05 | 53.1 ± 2.6 |
| HA-DA250 | 13.31 ± 0.47 | 2.03 ± 0.17 | 51.4 ± 4.1 |
| HA-DA400 | 18.83 ± 0.50 | 2.77 ± 0.27 | 39.5 ± 3.1 |
