Multilayer liquid spreading on superhydrophilic nanostructured surfaces
A phenomenon is presented where a propagating liquid on an array of nanopillars with scalloped features can separate into multiple layers of liquid films. The scallops were found to act as energy barriers that favor liquid separation into several layers over spreading in a uniform film. An analytica...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Institute of Physics
2011
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| Online Access: | http://hdl.handle.net/1721.1/64918 https://orcid.org/0000-0001-7045-1200 |
| _version_ | 1826214837196161024 |
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| author | Xiao, Rong Chu, Kuang-Han Wang, Evelyn N. |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Xiao, Rong Chu, Kuang-Han Wang, Evelyn N. |
| author_sort | Xiao, Rong |
| collection | MIT |
| description | A phenomenon is presented where a propagating liquid on an array of nanopillars with scalloped features can separate into multiple layers of liquid films. The scallops were found to act as energy barriers that favor liquid separation into several layers over spreading in a uniform film. An analytical model based on surface energy was developed to explain the phenomenon. Additional tailored pillar geometries were fabricated and tested to validate the theory and model. The results provide design guidelines for geometries that promote multiple layer separation and offer opportunities to control liquid film thickness on superhydrophilic surfaces. |
| first_indexed | 2024-09-23T16:11:56Z |
| format | Article |
| id | mit-1721.1/64918 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:11:56Z |
| publishDate | 2011 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | mit-1721.1/649182022-10-02T07:00:18Z Multilayer liquid spreading on superhydrophilic nanostructured surfaces Xiao, Rong Chu, Kuang-Han Wang, Evelyn N. Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Evelyn N. Xiao, Rong Chu, Kuang-Han Wang, Evelyn N. A phenomenon is presented where a propagating liquid on an array of nanopillars with scalloped features can separate into multiple layers of liquid films. The scallops were found to act as energy barriers that favor liquid separation into several layers over spreading in a uniform film. An analytical model based on surface energy was developed to explain the phenomenon. Additional tailored pillar geometries were fabricated and tested to validate the theory and model. The results provide design guidelines for geometries that promote multiple layer separation and offer opportunities to control liquid film thickness on superhydrophilic surfaces. National Science Foundation (U.S.) (award EEC-0824328) United States. Defense Advanced Research Projects Agency. Young Faculty Award Northrop Grumman Corporation. New Faculty Innovation Grant 2011-07-18T14:20:33Z 2011-07-18T14:20:33Z 2009-05 2008-12 Article http://purl.org/eprint/type/JournalArticle 1077-3118 0003-6951 http://hdl.handle.net/1721.1/64918 Xiao, Rong, Kuang-Han Chu, and Evelyn N. Wang. "Multilayer liquid spreading on superhydrophilic nanostructured surfaces." Appl. Phys. Lett. 94, 193104 (2009) ; doi:10.1063/1.3127461 (3 pages) © 2009 American Institute of Physics https://orcid.org/0000-0001-7045-1200 en_US http://dx.doi.org/10.1063/1.3127461 Applied Physics Letters 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 Institute of Physics MIT web domain |
| spellingShingle | Xiao, Rong Chu, Kuang-Han Wang, Evelyn N. Multilayer liquid spreading on superhydrophilic nanostructured surfaces |
| title | Multilayer liquid spreading on superhydrophilic nanostructured surfaces |
| title_full | Multilayer liquid spreading on superhydrophilic nanostructured surfaces |
| title_fullStr | Multilayer liquid spreading on superhydrophilic nanostructured surfaces |
| title_full_unstemmed | Multilayer liquid spreading on superhydrophilic nanostructured surfaces |
| title_short | Multilayer liquid spreading on superhydrophilic nanostructured surfaces |
| title_sort | multilayer liquid spreading on superhydrophilic nanostructured surfaces |
| url | http://hdl.handle.net/1721.1/64918 https://orcid.org/0000-0001-7045-1200 |
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