Nanoengineered Surfaces for Efficient Energy Systems
Nanoengineered surfaces offer new possibilities to manipulate fluid transport and enhance heat dissipation characteristics for the development of efficient energy systems. In particular, nanostructures on these surfaces can be harnessed to achieve superhydrophilicity and superhydrophobicity, and to...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Published: |
ASME International
2019
|
| Online Access: | http://hdl.handle.net/1721.1/120176 https://orcid.org/0000-0001-7045-1200 |
| _version_ | 1826197097665265664 |
|---|---|
| author | Wang, Evelyn Xiao, Rong Chu, Kuang-Han Enright, Ryan |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Evelyn Xiao, Rong Chu, Kuang-Han Enright, Ryan |
| author_sort | Wang, Evelyn |
| collection | MIT |
| description | Nanoengineered surfaces offer new possibilities to manipulate fluid transport and enhance heat dissipation characteristics for the development of efficient energy systems. In particular, nanostructures on these surfaces can be harnessed to achieve superhydrophilicity and superhydrophobicity, and to control liquid behavior and phase-change processes. In this work, we will describe recent developments focused on using superhydrophilic nanostructure design to manipulate liquid spreading behavior and directionalities. In the presence of asymmetric nanopillars, uni-directional spreading of water droplets can be achieved where the liquid spreads only in the direction of the pillar deflection and becomes pinned on the opposite interface. In the presence of fine features on the pillars, we observed a multi-layer spreading effect due to their associated energy barriers. For both cases, we have developed energy-based models to accurately predict the liquid behavior as functions of pertinent parameters. Furthermore, we developed a semi-analytical model to predict liquid propagation rates in pillar arrays driven by capillarity. The results offer design guidelines to optimize propagation rates for fluidic wicks. These investigations offer insights and significant potential for the development and integration of advanced nanostructures to achieve efficient energy conversion systems. Copyright © 2011 by ASME. |
| first_indexed | 2024-09-23T10:42:46Z |
| format | Article |
| id | mit-1721.1/120176 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:42:46Z |
| publishDate | 2019 |
| publisher | ASME International |
| record_format | dspace |
| spelling | mit-1721.1/1201762022-09-27T14:26:29Z Nanoengineered Surfaces for Efficient Energy Systems Wang, Evelyn Xiao, Rong Chu, Kuang-Han Enright, Ryan Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Evelyn Xiao, Rong Chu, Kuang-Han Enright, Ryan Nanoengineered surfaces offer new possibilities to manipulate fluid transport and enhance heat dissipation characteristics for the development of efficient energy systems. In particular, nanostructures on these surfaces can be harnessed to achieve superhydrophilicity and superhydrophobicity, and to control liquid behavior and phase-change processes. In this work, we will describe recent developments focused on using superhydrophilic nanostructure design to manipulate liquid spreading behavior and directionalities. In the presence of asymmetric nanopillars, uni-directional spreading of water droplets can be achieved where the liquid spreads only in the direction of the pillar deflection and becomes pinned on the opposite interface. In the presence of fine features on the pillars, we observed a multi-layer spreading effect due to their associated energy barriers. For both cases, we have developed energy-based models to accurately predict the liquid behavior as functions of pertinent parameters. Furthermore, we developed a semi-analytical model to predict liquid propagation rates in pillar arrays driven by capillarity. The results offer design guidelines to optimize propagation rates for fluidic wicks. These investigations offer insights and significant potential for the development and integration of advanced nanostructures to achieve efficient energy conversion systems. Copyright © 2011 by ASME. National Science Foundation (U.S.) (Award EEC-0824328) United States. Defense Advanced Research Projects Agency (Young Faculty Award) United States. Office of Naval Research Northrop Grumman Corporation (New Faculty Innovation Grant) Intel Corporation (Higher Education Grant) 2019-02-04T18:39:19Z 2019-02-04T18:39:19Z 2011-06 2019-01-09T17:16:48Z Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-4464-9 http://hdl.handle.net/1721.1/120176 Wang, Evelyn N., Rong Xiao, Kuang-Han Chu, and Ryan Enright. “Nanoengineered Surfaces for Efficient Energy Systems.” ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2, 19-22 June, 2011, Edmonton, Alberta, Canada, ASME, 2011. © 2011 ASME https://orcid.org/0000-0001-7045-1200 http://dx.doi.org/10.1115/ICNMM2011-58300 ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2 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 ASME International ASME |
| spellingShingle | Wang, Evelyn Xiao, Rong Chu, Kuang-Han Enright, Ryan Nanoengineered Surfaces for Efficient Energy Systems |
| title | Nanoengineered Surfaces for Efficient Energy Systems |
| title_full | Nanoengineered Surfaces for Efficient Energy Systems |
| title_fullStr | Nanoengineered Surfaces for Efficient Energy Systems |
| title_full_unstemmed | Nanoengineered Surfaces for Efficient Energy Systems |
| title_short | Nanoengineered Surfaces for Efficient Energy Systems |
| title_sort | nanoengineered surfaces for efficient energy systems |
| url | http://hdl.handle.net/1721.1/120176 https://orcid.org/0000-0001-7045-1200 |
| work_keys_str_mv | AT wangevelyn nanoengineeredsurfacesforefficientenergysystems AT xiaorong nanoengineeredsurfacesforefficientenergysystems AT chukuanghan nanoengineeredsurfacesforefficientenergysystems AT enrightryan nanoengineeredsurfacesforefficientenergysystems |