We observed that water-filled nanochannels dried up to 1000 times faster than predicted by vapor diffusional drying. Here we show that this ultra-rapid water transport is caused by very sharp channel corners siphoning (wicking) the water to the channel exit before it evaporates. Evidence is also provided that these sharp corners make the drying process independent of the relative humidity (RH) of the environment up to an RH of more than 0.9. To our knowledge this is the first time that nanochannel drying has been observed, and both the acceleration of drying and the independence of RH are highly surprising.
|Title of host publication||MicroTAS 2005 Conference -9th International Conference on Miniaturized Systems for Chemistry and Life Sciences|
|Editors||K.F Jensen, J. Han, D.J. Harrison, J. Voldman|
|Place of Publication||San Diego, CA, USA|
|Publisher||Transducers Research Foundation, Inc.|
|Number of pages||3|
|Publication status||Published - 2005|
|Event||9th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2005 - Boston, United States|
Duration: 9 Oct 2005 → 13 Oct 2005
Conference number: 9
|Name||Micro total analysis systems 2005|
|Publisher||Transducer Research Foundation|
|Conference||9th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2005|
|Period||9/10/05 → 13/10/05|
- Corner flow
Eijkel, J. C. T., Dan, B., Bomer, J. G., & van den Berg, A. (2005). Ultra-rapid and relative humidity independent drying of nanochannels. In K. F. Jensen, J. Han, D. J. Harrison, & J. Voldman (Eds.), MicroTAS 2005 Conference -9th International Conference on Miniaturized Systems for Chemistry and Life Sciences (pp. 1258-1260). (Micro total analysis systems 2005; Vol. 2). San Diego, CA, USA: Transducers Research Foundation, Inc..