Table 1. Comparison of theoretical relationship with experimental results for various porous membrane/gating liquid/transport liquid combinations.
The parameters are measured at room temperature (25°C). The unit of γA, γB, γAB, ΔEI, and ΔEII is mN/m. The unit of θA and θB is degrees (°). The case number is arranged on the basis of the order of solid materials.
| Case no. | Solid materials | Transport liquid (A) | Gating liquid (B) | γA | γB | γAB | θA | θB | ΔE1 | ΔE2 |
Stable system? |
|
| Theo. | Exp. | |||||||||||
| 1 | Silicone rubber | DI water | Silicone oil | 72.4 | 17.4 | 42.6 | 115.2 | 25.3 | 46.5 | 144.1 | Y | Y |
| 2 | Silicone rubber | DI water | Liquid paraffin | 72.4 | 29.6 | 41.6 | 115.2 | 61.3 | 41.8 | 126.2 | Y | Y |
| 3 | Silicone rubber | Liquid paraffin | Silicone oil | 29.6 | 17.4 | 0.4 | 61.3 | 25.3 | 2.6 | 15.2 | Y | Y |
| 4 | Silicone rubber | DI water | Krytox 103 | 72.4 | 17.7 | 53.7 | 115.2 | 39.9 | 34.9 | 143.3 | Y | Y |
| 5 | Silicone rubber | Silicone oil | Krytox 103 | 17.4 | 17.7 | 9.8 | 25.3 | 39.9 | −14.1 | −4.6 | N | N |
| 6 | Silicone rubber | Liquid paraffin | Krytox 103 | 29.6 | 17.7 | 11.0 | 61.3 | 39.9 | −12.4 | 10.6 | Y/N | N |
| 7 | PDMS | DI water | Silicone oil | 72.4 | 17.4 | 42.6 | 97.6 | 24.0 | 8.2 | 105.8 | Y | Y |
| 8 | PDMS | DI water | Liquid paraffin | 72.4 | 29.6 | 41.6 | 97.6 | 45.5 | 19.0 | 103.4 | Y | Y |
| 9 | PDMS | Liquid paraffin | Silicone oil | 29.6 | 17.4 | 0.4 | 45.5 | 24.0 | −10.1 | 2.5 | Y/N | N |
| 10 | PDMS | DI water | Krytox 103 | 72.4 | 17.7 | 53.7 | 97.6 | 39.1 | −7.2 | 101.2 | Y/N | Y |
| 11 | PDMS | Silicone oil | Krytox 103 | 17.4 | 17.7 | 9.8 | 24.0 | 39.1 | −14.1 | −4.6 | N | N |
| 12 | PDMS | Liquid paraffin | Krytox 103 | 29.6 | 17.7 | 11.0 | 45.5 | 39.1 | −25.1 | −2.2 | N | N |
| 13 | Polyurethane | DI water | Silicone oil | 72.4 | 17.4 | 42.6 | 73.3 | 11.9 | −50.2 | 47.4 | Y/N | N |
| 14 | Polyurethane | DI water | Liquid paraffin | 72.4 | 29.6 | 41.6 | 73.3 | 23.3 | −28.9 | 55.5 | Y/N | N |
| 15 | Polyurethane | Liquid paraffin | Silicone oil | 29.6 | 17.4 | 0.4 | 23.3 | 11.9 | −20.7 | −8.1 | N | N |
| 16 | Polyurethane | DI water | Krytox 103 | 72.4 | 17.7 | 53.7 | 73.3 | 37.0 | −67.1 | 41.3 | Y/N | N |
| 17 | Polyurethane | Silicone oil | Krytox 103 | 17.4 | 17.7 | 9.8 | 11.9 | 37.0 | −15.6 | −6.1 | N | N |
| 18 | Polyurethane | Liquid paraffin | Krytox 103 | 29.6 | 17.7 | 11.0 | 23.3 | 37.0 | −37.1 | −14.2 | N | N |