Table 2 Contact angles, feature thickness, plastron thickness, feature protrusion heights, repeating pattern length and solid fraction.
From: Flexible conformable hydrophobized surfaces for turbulent flow drag reduction
Copper mesh number or soot | Advancing contact angle (°) | Receding contact angle (°) | Roughness parameter (roughness scale/cylinder diameter) | Average feature thickness (μm) | Average plastron thickness post water flow (μm) | Average feature protrusion height post water flow (μm) | Repeating pattern length (L) (μm) | Solid fraction (%) |
|---|---|---|---|---|---|---|---|---|
40 | 161 ± 7 | 140 ± 11 | 0.049 ± 0.001 | 550 ± 9 | 506 ± 12 | 44 ± 3 | 709 ± 9 | 35 ± 5 |
60 | 158 ± 3 | 133 ± 2 | 0.034 ± 0.001 | 378 ± 7 | 283 ± 16 | 95 ± 9 | 428 ± 6 | 55 ± 6 |
100 | 163 ± 2 | 141 ± 3 | 0.013 ± 0.001 | 131 ± 7 | 103 ± 12 | 28 ± 5 | 267 ± 5 | 27 ± 4 |
200 | 152 ± 2 | 136 ± 1 | 0.0085 ± 0.0008 | 92 ± 6 | 64 ± 10 | 28 ± 4 | 132 ± 3 | 39 ± 9 |
Soot | 159 ± 2 | 153 ± 2 | n/a | n/a | n/a | n/a | n/a | n/a |
