Effect of wetting on capillary pumping in microchannels
| Authors |
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| Publication date | 2013 |
| Journal | Scientific Reports |
| Article number | 1412 |
| Volume | Issue number | 3 |
| Number of pages | 6 |
| Organisations |
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| Abstract | We investigate capillary pumping in microchannels both experimentally and numerically. Putting two droplets of different sizes at the in/outlet of a microchannel, there will in general be a flow from the smaller droplet to the larger one due to the Laplace pressure difference. We show that an unusual flow from a larger droplet into a smaller one is possible by manipulating the wetting properties, notably the contact line pinning. In addition, we propose a way to actively control the flow by electrowetting. |
| Document type | Article |
| Language | English |
| Published at | https://doi.org/10.1038/srep01412 |
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