Table 2.
Geometric parameters of drops and conduits
| Conduit width w (μm) | Parameter | Drop volume (μl) | |||
|---|---|---|---|---|---|
| 2.5 | 5 | 10 | 20 | ||
| 300 | Radius of curvature, R (μm) | 757 | 1038 | 1521 | 2586 |
| Height of center of conduit, h (μm) | 15.0 | 10.9 | 7.4 | 4.4 | |
| Contact angle, CA (degree) | 11.4 | 8.3 | 5.7 | 3.3 | |
| Length of interface, L (μm) | 302.0 | 301.1 | 300.5 | 300.2 | |
| Cross-sectional area, CSA (μm2) | 3008 | 2181 | 1483 | 871 | |
| 600 | Radius of curvature, R (μm) | 757 | 1038 | 1521 | 2586 |
| Center height conduit, h (μm) | 62.0 | 44.3 | 29.9 | 17.5 | |
| Contact angle, CA (degree) | 23.3 | 16.8 | 11.4 | 6.7 | |
| Length of interface, L (μm) | 616.9 | 608.7 | 604.0 | 601.4 | |
| Cross-sectional area, A (μm2) | 25,001 | 17,795 | 11,974 | 6989 | |
| 900 | Radius of curvature, R (μm) | 757 | 1038 | 1521 | 2586 |
| Center height conduit, h (μm) | 148.3 | 102.6 | 68.1 | 39.5 | |
| Contact angle, CA (degree) | 36.5 | 25.7 | 17.2 | 10.0 | |
| Length of interface, L (μm) | 963.8 | 930.9 | 913.7 | 904.6 | |
| Cross-sectional area, CSA (μm2) | 90,856 | 62,200 | 41,038 | 23,711 | |
Conduits with varying conduit width are connected to drops of varying volume (values calculated assuming a contact angle of 70°, an interfacial tension of 40 mN/m, and an overlay of FC40 with a depth of 3 mm)