Convection-enhanced water evaporation
Water vapor is lighter than air; this can enhance water evaporation by triggering vapor convection but there is little evidence. We directly visualize evaporation of nanoliter (2 to 700 nL) water droplets resting on silicon wafer in calm air using a high-resolution dual X-ray imaging method. Tempora...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2011-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.3554333 |
| _version_ | 1818055042110849024 |
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| author | B. M. Weon J. H. Je C. Poulard |
| author_facet | B. M. Weon J. H. Je C. Poulard |
| author_sort | B. M. Weon |
| collection | DOAJ |
| description | Water vapor is lighter than air; this can enhance water evaporation by triggering vapor convection but there is little evidence. We directly visualize evaporation of nanoliter (2 to 700 nL) water droplets resting on silicon wafer in calm air using a high-resolution dual X-ray imaging method. Temporal evolutions of contact radius and contact angle reveal that evaporation rate linearly changes with surface area, indicating convective (instead of diffusive) evaporation in nanoliter water droplets. This suggests that convection of water vapor would enhance water evaporation at nanoliter scales, for instance, on microdroplets or inside nanochannels. |
| first_indexed | 2024-12-10T12:06:39Z |
| format | Article |
| id | doaj.art-4a153480088448269ac08a8b69d16b0c |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-10T12:06:39Z |
| publishDate | 2011-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-4a153480088448269ac08a8b69d16b0c2022-12-22T01:49:27ZengAIP Publishing LLCAIP Advances2158-32262011-03-0111012102012102-610.1063/1.3554333002101ADVConvection-enhanced water evaporationB. M. Weon0J. H. Je1C. Poulard2X-ray Imaging Center, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, 790-784, KoreaX-ray Imaging Center, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, 790-784, KoreaLaboratoire de Physique des Solides, Universite Paris-Sud 11, UMR CNRS 8502, Bat. 510, Campus d’Orsay, F-91405 Orsay Cedex, FranceWater vapor is lighter than air; this can enhance water evaporation by triggering vapor convection but there is little evidence. We directly visualize evaporation of nanoliter (2 to 700 nL) water droplets resting on silicon wafer in calm air using a high-resolution dual X-ray imaging method. Temporal evolutions of contact radius and contact angle reveal that evaporation rate linearly changes with surface area, indicating convective (instead of diffusive) evaporation in nanoliter water droplets. This suggests that convection of water vapor would enhance water evaporation at nanoliter scales, for instance, on microdroplets or inside nanochannels.http://dx.doi.org/10.1063/1.3554333 |
| spellingShingle | B. M. Weon J. H. Je C. Poulard Convection-enhanced water evaporation AIP Advances |
| title | Convection-enhanced water evaporation |
| title_full | Convection-enhanced water evaporation |
| title_fullStr | Convection-enhanced water evaporation |
| title_full_unstemmed | Convection-enhanced water evaporation |
| title_short | Convection-enhanced water evaporation |
| title_sort | convection enhanced water evaporation |
| url | http://dx.doi.org/10.1063/1.3554333 |
| work_keys_str_mv | AT bmweon convectionenhancedwaterevaporation AT jhje convectionenhancedwaterevaporation AT cpoulard convectionenhancedwaterevaporation |