Table 1. Contact angles of bare Cu (Bare), hydrophobic (HPo), superhydrophilic (SHPi), superhydrophobic (SHPo), 5cst krytox oil-infused superhydrophobic (K.Oil 5cst), 5cst silicone oil-infused superhydrophobic (S.Oil 5cst), 100cst silicone oil-infused superhydrophobic (S.Oil 100cst), and 1000cst silicone oil-infused superhydrophobic (S.Oil 1000cst) surfaces in general and flooding conditions.
| Samples | Advancing (°) | Static (°) | Receding (°) | |||
|---|---|---|---|---|---|---|
| General | Flooded | General | Flooded | General | Flooded | |
| Bare | 101.5 ± 3.8 | 87.3 ± 2.4 | 89.6 ± 3.5 | 79.5 ± 2.3 | 30.9 ± 4.3 | 26.5 ± 2.3 |
| HPo | 131.9 ± 2.2 | 129.6 ± 1.7 | 116.1 ± 1.3 | 111.1 ± 1.5 | 81.2 ± 5.4 | 78.3 ± 2.3 |
| SHPi | <10 | <10 | <10 | <10 | 0 | 0 |
| SHPo | 162.7 ± 1.2 | 132.7 ± 4.2 | 161.7 ± 4.0 | 121.6 ± 3.3 | 161.1 ± 1.1 | 89.8 ± 2.4 |
| K.Oil 5cst | 123.8 ± 2.1 | 121.4 ± 2.6 | 122.0 ± 3.4 | 120.4 ± 1.2 | 121.6 ± 2.1 | 119.4 ± 1.5 |
| S.Oil 5cst | 109.6 ± 2.4 | 106.3 ± 3.7 | 108.3 ± 2.8 | 106.1 ± 2.5 | 107.3 ± 2.5 | 105.4 ± 4.2 |
| S.Oil 100cst | 105.3 ± 1.8 | 102.5 ± 2.0 | 104.2 ± 2.6 | 101.0 ± 3.6 | 103.9 ± 2.7 | 100.7 ± 2.1 |
| S.Oil 1000cst | 104.3 ± 2.3 | 102.6 ± 3.1 | 101.6 ± 4.3 | 100.2 ± 3.9 | 100.7 ± 2.7 | 94.8 ± 2.6 |