Dynamic air layer on textured superhydrophobic surfaces

Handle URI:
http://hdl.handle.net/10754/562959
Title:
Dynamic air layer on textured superhydrophobic surfaces
Authors:
Vakarelski, Ivan Uriev ( 0000-0001-9244-9160 ) ; Chan, Derek Y C; Marston, Jeremy; Thoroddsen, Sigurdur T. ( 0000-0001-6997-4311 )
Abstract:
We provide an experimental demonstration that a novel macroscopic, dynamic continuous air layer or plastron can be sustained indefinitely on textured superhydrophobic surfaces in air-supersaturated water by a natural gas influx mechanism. This type of plastron is an intermediate state between Leidenfrost vapor layers on superheated surfaces and the equilibrium Cassie-Baxter wetting state on textured superhydrophobic surfaces. We show that such a plastron can be sustained on the surface of a centimeter-sized superhydrophobic sphere immersed in heated water and variations of its dynamic behavior with air saturation of the water can be regulated by rapid changes of the water temperature. The simple experimental setup allows for quantification of the air flux into the plastron and identification of the air transport model of the plastron growth. Both the observed growth dynamics of such plastrons and millimeter-sized air bubbles seeded on the hydrophilic surface under identical air-supersaturated solution conditions are consistent with the predictions of a well-mixed gas transport model. © 2013 American Chemical Society.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; High-Speed Fluids Imaging Laboratory
Publisher:
American Chemical Society (ACS)
Journal:
Langmuir
Issue Date:
3-Sep-2013
DOI:
10.1021/la402306c
PubMed ID:
23919719
Type:
Article
ISSN:
07437463
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorVakarelski, Ivan Urieven
dc.contributor.authorChan, Derek Y Cen
dc.contributor.authorMarston, Jeremyen
dc.contributor.authorThoroddsen, Sigurdur T.en
dc.date.accessioned2015-08-03T11:17:04Zen
dc.date.available2015-08-03T11:17:04Zen
dc.date.issued2013-09-03en
dc.identifier.issn07437463en
dc.identifier.pmid23919719en
dc.identifier.doi10.1021/la402306cen
dc.identifier.urihttp://hdl.handle.net/10754/562959en
dc.description.abstractWe provide an experimental demonstration that a novel macroscopic, dynamic continuous air layer or plastron can be sustained indefinitely on textured superhydrophobic surfaces in air-supersaturated water by a natural gas influx mechanism. This type of plastron is an intermediate state between Leidenfrost vapor layers on superheated surfaces and the equilibrium Cassie-Baxter wetting state on textured superhydrophobic surfaces. We show that such a plastron can be sustained on the surface of a centimeter-sized superhydrophobic sphere immersed in heated water and variations of its dynamic behavior with air saturation of the water can be regulated by rapid changes of the water temperature. The simple experimental setup allows for quantification of the air flux into the plastron and identification of the air transport model of the plastron growth. Both the observed growth dynamics of such plastrons and millimeter-sized air bubbles seeded on the hydrophilic surface under identical air-supersaturated solution conditions are consistent with the predictions of a well-mixed gas transport model. © 2013 American Chemical Society.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleDynamic air layer on textured superhydrophobic surfacesen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentHigh-Speed Fluids Imaging Laboratoryen
dc.identifier.journalLangmuiren
dc.contributor.institutionDepartment of Mathematics and Statistics, University of Melbourne, Parkville, VIC 3010, Australiaen
dc.contributor.institutionFaculty of Life and Social Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australiaen
kaust.authorVakarelski, Ivan Urieven
kaust.authorMarston, Jeremyen
kaust.authorThoroddsen, Sigurdur T.en

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