Table 1. Critical heat flux measurements on micro- and nano-textured surfaces.
| Sample type | bd (μm) | b(μm) | h(μm) | CHF (W cm−2) |
|---|---|---|---|---|
| Micro | 2 | 1.7 | 15.6 | 130 |
| Micro | 3 | 3, 2.6 | 17.1, 16.4 | 140, 155 |
| Micro | 5 | 5.5, 5.1 | 12.2, 12.1 | 171, 169 |
| Micro | 10 | 10.9, 10.4 | 11.2, 10.7 | 160, 187 |
| Micro | 25 | 25.6, 25.4 | 10.3, 10.2 | 150, 140 |
| Micro | 50 | 50.6, 50.6 | 10.2, 9.6 | 115, 110 |
| Micro | 200 | 200 | 15.8 | 110 |
| Micro | — | — | — | 100,100 |
| Nano | 2 | 2.1, 2.1 | 16.4, 15.7 | 140, 137 |
| Nano | 3 | 3.2, 3.3 | 16.9, 16.0 | 150, 150 |
| Nano | 5 | 6.7, 6.5 | 13.3, 10.4 | 201, 186 |
| Nano | 10 | 12.2, 13 | 11.9, 11.2 | 211, 188 |
| Nano | 25 | 27.4, 27.4 | 10.8, 10.8 | 191, 180 |
| Nano | 50 | 52.6, 51.5 | 10.7, 9.6 | 170, 186 |
| Nano | 200 | 200 | 15.7 | 120 |
| Nano | — | — | — | 131, 115 |
CHF, critical heat flux.
bd is design micropillar spacing, b is measured micropillar spacing, h is measured micropillar height and CHF is measured critical heat flux. Measurements on the two nominally similar samples are listed in order.