Jumping-Droplet Electrostatic Energy Harvesting
Micro- and nanoscale wetting phenomena has been an active area of research due to its potential for improving engineered system performance involving phase change. With the recent advancements in micro/nanofabrication techniques, structured surfaces can now be designed to allow condensing coalesced...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | en_US |
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American Institute of Physics
2014
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| Online Access: | http://hdl.handle.net/1721.1/88037 https://orcid.org/0000-0001-7045-1200 |
| _version_ | 1826208933893636096 |
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| author | Miljkovic, Nenad Preston, Daniel John Enright, Ryan Wang, Evelyn N. |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Miljkovic, Nenad Preston, Daniel John Enright, Ryan Wang, Evelyn N. |
| author_sort | Miljkovic, Nenad |
| collection | MIT |
| description | Micro- and nanoscale wetting phenomena has been an active area of research due to its potential for improving engineered system performance involving phase change. With the recent advancements in micro/nanofabrication techniques, structured surfaces can now be designed to allow condensing coalesced droplets to spontaneously jump off the surface due to the conversion of excess surface energy into kinetic energy. In addition to being removed at micrometric length scales (~10 μm), jumping water droplets also attain a positive electrostatic charge (~10-100 fC) from the hydrophobic coating/condensate interaction. In this work, we take advantage of this droplet charging to demonstrate jumping-droplet electrostatic energy harvesting. The charged droplets jump between superhydrophobic copper oxide and hydrophilic copper surfaces to create an electrostatic potential and generate power during formation of atmospheric dew. We demonstrated power densities of ~15 pW/cm[superscript 2], which, in the near term, can be improved to ~1 μW/cm[superscript 2]. This work demonstrates a surface engineered platform that promises to be low cost and scalable for atmospheric energy harvesting and electric power generation. |
| first_indexed | 2024-09-23T14:15:03Z |
| format | Article |
| id | mit-1721.1/88037 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:15:03Z |
| publishDate | 2014 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | mit-1721.1/880372022-10-01T20:03:31Z Jumping-Droplet Electrostatic Energy Harvesting Miljkovic, Nenad Preston, Daniel John Enright, Ryan Wang, Evelyn N. Massachusetts Institute of Technology. Department of Mechanical Engineering Miljkovic, Nenad Miljkovic, Nenad Preston, Daniel John Wang, Evelyn N. Micro- and nanoscale wetting phenomena has been an active area of research due to its potential for improving engineered system performance involving phase change. With the recent advancements in micro/nanofabrication techniques, structured surfaces can now be designed to allow condensing coalesced droplets to spontaneously jump off the surface due to the conversion of excess surface energy into kinetic energy. In addition to being removed at micrometric length scales (~10 μm), jumping water droplets also attain a positive electrostatic charge (~10-100 fC) from the hydrophobic coating/condensate interaction. In this work, we take advantage of this droplet charging to demonstrate jumping-droplet electrostatic energy harvesting. The charged droplets jump between superhydrophobic copper oxide and hydrophilic copper surfaces to create an electrostatic potential and generate power during formation of atmospheric dew. We demonstrated power densities of ~15 pW/cm[superscript 2], which, in the near term, can be improved to ~1 μW/cm[superscript 2]. This work demonstrates a surface engineered platform that promises to be low cost and scalable for atmospheric energy harvesting and electric power generation. United States. Dept. of Energy. Office of Basic Energy Sciences (Award DE-FG02-09ER46577) United States. Office of Naval Research National Science Foundation (U.S.). Graduate Research Fellowship Program (Grant 1122374) 2014-06-19T19:38:59Z 2014-06-19T19:38:59Z 2014-06-19 Article http://purl.org/eprint/type/JournalArticle 0003-6951 1077-3118 http://hdl.handle.net/1721.1/88037 Miljkovic, Nenad, Daniel J. Preston, Ryan Enright, and Evelyn N. Wang. "Jumping-Droplet Electrostatic Energy Harvesting." Applied Physics Letters 105, 013111 (2014). https://orcid.org/0000-0001-7045-1200 en_US http://dx.doi.org/10.1063/1.4886798 Applied Physics Letters Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Institute of Physics Miljkovic |
| spellingShingle | Miljkovic, Nenad Preston, Daniel John Enright, Ryan Wang, Evelyn N. Jumping-Droplet Electrostatic Energy Harvesting |
| title | Jumping-Droplet Electrostatic Energy Harvesting |
| title_full | Jumping-Droplet Electrostatic Energy Harvesting |
| title_fullStr | Jumping-Droplet Electrostatic Energy Harvesting |
| title_full_unstemmed | Jumping-Droplet Electrostatic Energy Harvesting |
| title_short | Jumping-Droplet Electrostatic Energy Harvesting |
| title_sort | jumping droplet electrostatic energy harvesting |
| url | http://hdl.handle.net/1721.1/88037 https://orcid.org/0000-0001-7045-1200 |
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