Hydrophilic Directional Slippery Rough Surfaces for Water Harvesting

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dc.contributor.ORCID0000-0001-5050-2867 (Dai, X)
dc.contributor.VIAF308247739 (Dai, X)
dc.contributor.authorDai, Xianming
dc.contributor.authorSun, Nan
dc.contributor.authorNielsen, Steven O.
dc.contributor.authorStogin, Birgitt Boschitsch
dc.contributor.authorWang, Jing
dc.contributor.authorYang, Shikuan
dc.contributor.authorWong, Tak-Sing
dc.contributor.utdAuthorDai, Xianming
dc.contributor.utdAuthorNielsen, Steven O.
dc.date.accessioned2019-05-31T20:01:39Z
dc.date.available2019-05-31T20:01:39Z
dc.date.created2018-03-02
dc.description.abstractMultifunctional surfaces that are favorable for both droplet nucleation and removal are highly desirable for water harvesting applications but are rare. Inspired by the unique functions of pitcher plants and rice leaves, we present a hydrophilic directional slippery rough surface (SRS) that is capable of rapidly nucleating and removing water droplets. Our surfaces consist of nanotextured directional microgrooves in which the nanotextures alone are infused with hydrophilic liquid lubricant. We have shown through molecular dynamics simulations that the physical origin of the efficient droplet nucleation is attributed to the hydrophilic surface functional groups, whereas the rapid droplet removal is due to the significantly reduced droplet pinning of the directional surface structures and slippery interface. We have further demonstrated that the SRS, owing to its large surface area, hydrophilic slippery interface, and directional liquid repellency, outperforms conventional liquid-repellent surfaces in water harvesting applications.
dc.description.departmentSchool of Natural Sciences and Mathematics
dc.description.departmentErik Jonsson School of Engineering and Computer Science
dc.description.sponsorshipNSF CAREER (Faculty Early Career Development Program) Award 1351462; Advanced Research Projects Agency-Energy Award DE-AR0000326; Office of Naval Research Multidisciplinary University Research Initiatives Award N00014-12-1-0875; NSF Graduate Research Fellowship (grant no. DGE1255832).
dc.identifier.bibliographicCitationDai, Xianming, Nan Sun, Steven O. Nielsen, Birgitt Boschitsch Stogin, et al. 2018. "Hydrophilic directional slippery rough surfaces for water harvesting." Science Advances 4(3), doi:10.1126/sciadv.aaq0919
dc.identifier.issn2375-2548
dc.identifier.issue3
dc.identifier.urihttps://hdl.handle.net/10735.1/6519
dc.identifier.volume4
dc.language.isoen
dc.publisherAmer Assoc for the Advancement of Science
dc.relation.urihttp://dx.doi.org/10.1126/sciadv.aaq0919
dc.rightsCC BY-NC 4.0 (Attribution-NonCommercial)
dc.rights©2018 The Authors
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.source.journalScience Advances
dc.subjectCondensation
dc.subjectSolids--Surfaces
dc.subjectDrops
dc.subjectHydrophobic surfaces
dc.subjectBeetles
dc.subjectLubrication and lubricants
dc.subjectWater harvesting
dc.titleHydrophilic Directional Slippery Rough Surfaces for Water Harvesting
dc.type.genrearticle

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