Table 1.
Physical characteristics of nano/microtextured surfaces.
| Characteristics | Nanotextured | Microtextured |
|---|---|---|
| Consistent surface roughness | 4000 nanometers on average (Ra) | 17 ± 3 µm |
| Median profile height (µm) | 13 ± 2 | 57 ± 15 |
| Kurtosis | 3.1 ± 0.4 | 2.6 ± 0.3 |
| Skewness | 0.4 ± 0.2 | 0.1 ± 0.2 |
| Contact angle * | 131° ± 4° | 119° ± 3° |
| Contact points per cm2 | 49,000 | 1800–2200 |
* Contact angle reveals how the topography increases hydrophobicity compared to a smooth PDMS (surface contact angle of less than 110° ± 4°) [121].