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Journal article
Biotemplated hierarchical surfaces and the role of dual length scales on the repellency of impacting droplets
Applied physics letters, v 100(26), p263701
25 Jun 2012
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We fabricated biomimetic hierarchical superhydrophobic surfaces using the Tobacco mosaic virus and investigated the role of each length scale during droplet impact by decomposing the micro and nanoscale components. We found that 10 mu l water droplets rebounded at impact velocities greater than 4.3 m/s on the hierarchical surfaces, outperforming the nanostructured surfaces, which underwent an observable wetting transition at an impact velocity of 2.7 m/s. This finding demonstrates that each length scale plays a distinct, but complementary, role in maximizing water repellency during droplet impact and, thus, provides insight into the evolutionary development of highly water-repellant hierarchical plant leaves. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729935]
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Details
- Title
- Biotemplated hierarchical surfaces and the role of dual length scales on the repellency of impacting droplets
- Creators
- Matthew McCarthy - Drexel UniversityKonstantinos Gerasopoulos - Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USARyan Enright - MIT, Dept Mech Engn, Cambridge, MA 02139 USAJames N. Culver - Univ Maryland, Inst Biosci & Biotechnol Res, College Pk, MD 20742 USAReza Ghodssi - Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USAEvelyn N. Wang - MIT, Dept Mech Engn, Cambridge, MA 02139 USA
- Publication Details
- Applied physics letters, v 100(26), p263701
- Publisher
- American Institute of Physics
- Number of pages
- 5
- Grant note
- DARPA; United States Department of Defense; Defense Advanced Research Projects Agency (DARPA) Marie Curie Actions under FP7 Irish Research Council for Science, Engineering, and Technology; Irish Research Council for Science, Engineering and Technology
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000305831500102
- Scopus ID
- 2-s2.0-84863330950
- Other Identifier
- 991019168615904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Applied