Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation
The evaporation of a liquid drop on a solid substrate is a remarkably common phenomenon. Yet, the complexity of the underlying mechanisms has constrained previous studies to spherically symmetric configurations. Here we investigate well-defined, non-spherical evaporating drops of pure liquids and bi...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2017
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| Online Access: | http://hdl.handle.net/1721.1/110123 https://orcid.org/0000-0002-9130-3589 |
| _version_ | 1811087655376519168 |
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| author | Wray, A. W. Che, Z. Matar, O. K. Valluri, P. Kim, J. Sefiane, K. Saenz Hervias, Pedro Javier |
| author2 | Massachusetts Institute of Technology. Department of Mathematics |
| author_facet | Massachusetts Institute of Technology. Department of Mathematics Wray, A. W. Che, Z. Matar, O. K. Valluri, P. Kim, J. Sefiane, K. Saenz Hervias, Pedro Javier |
| author_sort | Wray, A. W. |
| collection | MIT |
| description | The evaporation of a liquid drop on a solid substrate is a remarkably common phenomenon. Yet, the complexity of the underlying mechanisms has constrained previous studies to spherically symmetric configurations. Here we investigate well-defined, non-spherical evaporating drops of pure liquids and binary mixtures. We deduce a universal scaling law for the evaporation rate valid for any shape and demonstrate that more curved regions lead to preferential localized depositions in particle-laden drops. Furthermore, geometry induces well-defined flow structures within the drop that change according to the driving mechanism. In the case of binary mixtures, geometry dictates the spatial segregation of the more volatile component as it is depleted. Our results suggest that the drop geometry can be exploited to prescribe the particle deposition and evaporative dynamics of pure drops and the mixing characteristics of multicomponent drops, which may be of interest to a wide range of industrial and scientific applications. |
| first_indexed | 2024-09-23T13:49:54Z |
| format | Article |
| id | mit-1721.1/110123 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:49:54Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1101232022-09-28T16:29:55Z Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation Wray, A. W. Che, Z. Matar, O. K. Valluri, P. Kim, J. Sefiane, K. Saenz Hervias, Pedro Javier Massachusetts Institute of Technology. Department of Mathematics Saenz Hervias, Pedro Javier The evaporation of a liquid drop on a solid substrate is a remarkably common phenomenon. Yet, the complexity of the underlying mechanisms has constrained previous studies to spherically symmetric configurations. Here we investigate well-defined, non-spherical evaporating drops of pure liquids and binary mixtures. We deduce a universal scaling law for the evaporation rate valid for any shape and demonstrate that more curved regions lead to preferential localized depositions in particle-laden drops. Furthermore, geometry induces well-defined flow structures within the drop that change according to the driving mechanism. In the case of binary mixtures, geometry dictates the spatial segregation of the more volatile component as it is depleted. Our results suggest that the drop geometry can be exploited to prescribe the particle deposition and evaporative dynamics of pure drops and the mixing characteristics of multicomponent drops, which may be of interest to a wide range of industrial and scientific applications. 2017-06-21T15:38:18Z 2017-06-21T15:38:18Z 2017-03 2016-07 Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/110123 Sáenz, P. J.; Wray, A. W.; Che, Z.; Matar, O. K.; Valluri, P.; Kim, J. and Sefiane, K. “Dynamics and Universal Scaling Law in Geometrically-Controlled Sessile Drop Evaporation.” Nature Communications 8 (March 2017): 14783 © 2017 The Authors https://orcid.org/0000-0002-9130-3589 en_US http://dx.doi.org/10.1038/ncomms14783 Nature Communications Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature |
| spellingShingle | Wray, A. W. Che, Z. Matar, O. K. Valluri, P. Kim, J. Sefiane, K. Saenz Hervias, Pedro Javier Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation |
| title | Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation |
| title_full | Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation |
| title_fullStr | Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation |
| title_full_unstemmed | Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation |
| title_short | Dynamics and universal scaling law in geometrically-controlled sessile drop evaporation |
| title_sort | dynamics and universal scaling law in geometrically controlled sessile drop evaporation |
| url | http://hdl.handle.net/1721.1/110123 https://orcid.org/0000-0002-9130-3589 |
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