Thermocapillary motion on lubricant-impregnated surfaces
We show that thermocapillary-induced droplet motion is markedly enhanced when using lubricant-impregnated surfaces as compared to solid substrates. These surfaces provide weak pinning, which makes them ideal for droplet transportation and specifically for water transportation. Using a lubricant with...
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American Physical Society (APS)
2019
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| Online Access: | http://hdl.handle.net/1721.1/119884 https://orcid.org/0000-0003-2578-7850 https://orcid.org/0000-0003-0834-8047 https://orcid.org/0000-0001-5937-1525 https://orcid.org/0000-0002-6846-152X |
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| author | Quéré, David Bjelobrk, Nada Girard, Henri-Louis Bengaluru Subramanyam, Srinivas Prasad Kwon, HyukMin Varanasi, Kripa |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Quéré, David Bjelobrk, Nada Girard, Henri-Louis Bengaluru Subramanyam, Srinivas Prasad Kwon, HyukMin Varanasi, Kripa |
| author_sort | Quéré, David |
| collection | MIT |
| description | We show that thermocapillary-induced droplet motion is markedly enhanced when using lubricant-impregnated surfaces as compared to solid substrates. These surfaces provide weak pinning, which makes them ideal for droplet transportation and specifically for water transportation. Using a lubricant with viscosity comparable to that of water and temperature gradients as low as 2 K/mm, we observe that drops can propel at 6.5 mm/s, that is, at least 5 times quicker than reported on conventional substrates. Also in contrast with solids, the liquid nature of the different interfaces makes it possible to predict quantitatively the thermocapillary Marangoni force (and velocity) responsible for the propulsion. |
| first_indexed | 2024-09-23T08:20:18Z |
| format | Article |
| id | mit-1721.1/119884 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:20:18Z |
| publishDate | 2019 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1198842022-09-30T09:06:31Z Thermocapillary motion on lubricant-impregnated surfaces Quéré, David Bjelobrk, Nada Girard, Henri-Louis Bengaluru Subramanyam, Srinivas Prasad Kwon, HyukMin Varanasi, Kripa Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Bjelobrk, Nada Girard, Henri-Louis Bengaluru Subramanyam, Srinivas Prasad Kwon, HyukMin Varanasi, Kripa We show that thermocapillary-induced droplet motion is markedly enhanced when using lubricant-impregnated surfaces as compared to solid substrates. These surfaces provide weak pinning, which makes them ideal for droplet transportation and specifically for water transportation. Using a lubricant with viscosity comparable to that of water and temperature gradients as low as 2 K/mm, we observe that drops can propel at 6.5 mm/s, that is, at least 5 times quicker than reported on conventional substrates. Also in contrast with solids, the liquid nature of the different interfaces makes it possible to predict quantitatively the thermocapillary Marangoni force (and velocity) responsible for the propulsion. 2019-01-09T16:55:22Z 2019-01-09T16:55:22Z 2016-10 2016-03 2019-01-08T19:05:37Z Article http://purl.org/eprint/type/JournalArticle 2469-990X 2469-9918 http://hdl.handle.net/1721.1/119884 Bjelobrk, Nada et al. “Thermocapillary Motion on Lubricant-Impregnated Surfaces.” Physical Review Fluids 1, 6 (October 2016): 06302 © 2016 American Physical Society https://orcid.org/0000-0003-2578-7850 https://orcid.org/0000-0003-0834-8047 https://orcid.org/0000-0001-5937-1525 https://orcid.org/0000-0002-6846-152X http://dx.doi.org/10.1103/PHYSREVFLUIDS.1.063902 Physical Review Fluids Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Quéré, David Bjelobrk, Nada Girard, Henri-Louis Bengaluru Subramanyam, Srinivas Prasad Kwon, HyukMin Varanasi, Kripa Thermocapillary motion on lubricant-impregnated surfaces |
| title | Thermocapillary motion on lubricant-impregnated surfaces |
| title_full | Thermocapillary motion on lubricant-impregnated surfaces |
| title_fullStr | Thermocapillary motion on lubricant-impregnated surfaces |
| title_full_unstemmed | Thermocapillary motion on lubricant-impregnated surfaces |
| title_short | Thermocapillary motion on lubricant-impregnated surfaces |
| title_sort | thermocapillary motion on lubricant impregnated surfaces |
| url | http://hdl.handle.net/1721.1/119884 https://orcid.org/0000-0003-2578-7850 https://orcid.org/0000-0003-0834-8047 https://orcid.org/0000-0001-5937-1525 https://orcid.org/0000-0002-6846-152X |
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