Table 1.
Geometric properties of PLLA nanotopographies replicated from 5 %, 2% and 0.5% PS/PBrS demixed polymer blends presented as mean ± standard deviation. PLLA from the bimodal 5% master are presented as mean data, data from large topographies (area ≥ 3 μm2) and data from small topographies (area < 3 μm2)
| Rrms (nm) | Δ Sample Area (%) | Height (nm) | Topography Area (μm2) | Effective Radius (nm) | Center-Center Spacinga (nm) | Inter-Topography Spacinga (nm) | Edge Density (μm–1) | |
|---|---|---|---|---|---|---|---|---|
| 5% | 52.2 ± 4.3 | 1.10 ± 0.15 | 0.59 ± 0.16 | |||||
| ≥ 3 μm2 | 125.9 ± 12.7 | 12.8 ± 11.3 | 1900 ± 700 | 2850 ± 750 | 500 ± 400 | |||
| <3 μm2 | 83.7 ± 14.1 | 0.59 ± 0.37 | 400 ± 100 | 1750 ± 850 | 750 ± 750 | |||
| 2% | 11.3 ± 0.5 | 0.49 ± 0.03 | 30.9 ± 2.4 | 0.52 ± 0.26 | 400 ± 100 | 900 ± 175 | 125 ± 150 | 2.63 ± 0.15 |
| 0.5% | 3.5 ± 0.3 | 0.18 ± 0.06 | 10.7 ± 1.4 | 0.12 ± 0.07 | 180 ± 60 | 470 ± 130 | 100 ± 90 | 4.77 ± 1.13 |
a
Center-center and inter-topography spacing assessed between each feature its three nearest neighbors