How Coalescing Droplets Jump
Surface engineering at the nanoscale is a rapidly developing field that promises to impact a range of applications including energy production, water desalination, self-cleaning and anti-icing surfaces, thermal management of electronics, microfluidic platforms, and environmental pollution control. A...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Chemical Society (ACS)
2015
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| Online Access: | http://hdl.handle.net/1721.1/99996 https://orcid.org/0000-0001-7045-1200 |
| _version_ | 1826202610175049728 |
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| author | Enright, Ryan Miljkovic, Nenad Sprittles, James Nolan, Kevin Mitchell, Robert Wang, Evelyn N. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Enright, Ryan Miljkovic, Nenad Sprittles, James Nolan, Kevin Mitchell, Robert Wang, Evelyn N. |
| author_sort | Enright, Ryan |
| collection | MIT |
| description | Surface engineering at the nanoscale is a rapidly developing field that promises to impact a range of applications including energy production, water desalination, self-cleaning and anti-icing surfaces, thermal management of electronics, microfluidic platforms, and environmental pollution control. As the area advances, more detailed insights of dynamic wetting interactions on these surfaces are needed. In particular, the coalescence of two or more droplets on ultra-low adhesion surfaces leads to droplet jumping. Here we show, through detailed measurements of jumping droplets during water condensation coupled with numerical simulations of binary droplet coalescence, that this process is fundamentally inefficient with only a small fraction of the available excess surface energy (≲6%) convertible into translational kinetic energy. These findings clarify the role of internal fluid dynamics during the jumping droplet coalescence process and underpin the development of systems that can harness jumping droplets for a wide range of applications. |
| first_indexed | 2024-09-23T12:10:03Z |
| format | Article |
| id | mit-1721.1/99996 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:10:03Z |
| publishDate | 2015 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/999962022-09-28T00:37:53Z How Coalescing Droplets Jump Enright, Ryan Miljkovic, Nenad Sprittles, James Nolan, Kevin Mitchell, Robert Wang, Evelyn N. Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Evelyn N. Enright, Ryan Miljkovic, Nenad Mitchell, Robert Wang, Evelyn N. Surface engineering at the nanoscale is a rapidly developing field that promises to impact a range of applications including energy production, water desalination, self-cleaning and anti-icing surfaces, thermal management of electronics, microfluidic platforms, and environmental pollution control. As the area advances, more detailed insights of dynamic wetting interactions on these surfaces are needed. In particular, the coalescence of two or more droplets on ultra-low adhesion surfaces leads to droplet jumping. Here we show, through detailed measurements of jumping droplets during water condensation coupled with numerical simulations of binary droplet coalescence, that this process is fundamentally inefficient with only a small fraction of the available excess surface energy (≲6%) convertible into translational kinetic energy. These findings clarify the role of internal fluid dynamics during the jumping droplet coalescence process and underpin the development of systems that can harness jumping droplets for a wide range of applications. Irish Research Council United States. Dept. of Energy. Office of Science (Solid-State Solar-Thermal Energy Conversion Center Award DE-FG02-09ER46577) United States. Office of Naval Research 2015-11-23T16:12:34Z 2015-11-23T16:12:34Z 2014-09 2014-07 Article http://purl.org/eprint/type/JournalArticle 1936-0851 1936-086X http://hdl.handle.net/1721.1/99996 Enright, Ryan, Nenad Miljkovic, James Sprittles, Kevin Nolan, Robert Mitchell, and Evelyn N. Wang. “How Coalescing Droplets Jump.” ACS Nano 8, no. 10 (October 28, 2014): 10352–10362. https://orcid.org/0000-0001-7045-1200 en_US http://dx.doi.org/10.1021/nn503643m ACS Nano 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 Chemical Society (ACS) Miljkovic |
| spellingShingle | Enright, Ryan Miljkovic, Nenad Sprittles, James Nolan, Kevin Mitchell, Robert Wang, Evelyn N. How Coalescing Droplets Jump |
| title | How Coalescing Droplets Jump |
| title_full | How Coalescing Droplets Jump |
| title_fullStr | How Coalescing Droplets Jump |
| title_full_unstemmed | How Coalescing Droplets Jump |
| title_short | How Coalescing Droplets Jump |
| title_sort | how coalescing droplets jump |
| url | http://hdl.handle.net/1721.1/99996 https://orcid.org/0000-0001-7045-1200 |
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