Evaporation driven pumping for chromatography application
- 8 October 2002
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Lab on a Chip
- Vol. 2 (4) , 219-223
- https://doi.org/10.1039/b208031c
Abstract
A continuous transport process for liquids in micro-channels is reported. Flow was generated by evaporation at the channel end plus capillary forces. The micro-channels integrated into a two-glass-layer device were 110 μm wide, 28 μm deep and 4 or 10 cm long. A continuous liquid transport velocity of up to 2.25 mm s−1 was observed for aqueous solutions. The flow velocity is shown to increase when an air stream is guided over the evaporation zone.Keywords
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