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dc.contributor.authorYu, Zhejun
dc.contributor.authorYang, Jieyi
dc.contributor.authorWan, Fang
dc.contributor.authorGe, Quan
dc.contributor.authorYang, Longlai
dc.contributor.authorDing, Zunliang
dc.contributor.authorYang, Dequan
dc.contributor.authorSacher, Edward R.
dc.contributor.authorIsimjan, Tayirjan T.
dc.date.accessioned2015-08-03T11:38:12Z
dc.date.available2015-08-03T11:38:12Z
dc.date.issued2014
dc.identifier.issn20507488
dc.identifier.doi10.1039/c4ta00882k
dc.identifier.urihttp://hdl.handle.net/10754/563209
dc.description.abstractSuperhydrophobic surfaces, with water contact angles greater than 150° and slide angles less than 10°, have attracted a great deal of attention due to their self-cleaning ability and excellent water-repellency. It is commonly accepted that a superhydrophobic surface loses its superhydrophobicity in contact with water hotter than 50 °C. Such a phenomenon was recently demonstrated by Liu et al. [J. Mater. Chem., 2009, 19, 5602], using both natural lotus leaf and artificial leaf-like surfaces. However, our work has shown that superhydrophobic surfaces maintained their superhydrophobicity, even in water at 80 °C, provided that the leaf temperature is greater than that of the water droplet. In this paper, we report on the wettability of water droplets on superhydrophobic thin films, as a function of both their temperatures. The results have shown that both the water contact and slide angles on the surfaces will remain unchanged when the temperature of the water droplet is greater than that of the surface. The water contact angle, or the slide angle, will decrease or increase, however, with droplet temperatures increasingly greater than that of the surfaces. We propose that, in such cases, the loss of superhydrophobicity of the surfaces is caused by evaporation of the hot water molecules and their condensation on the cooler surface. © 2014 the Partner Organisations.
dc.description.sponsorshipThe authors express their appreciation to Wuxi City Technology Innovation foundation for support. J.Y.Y. is grateful to Wuxi Shunye Technology for providing support. T.T.I. is grateful for the financial support of the Office of Competitive Research Funds (OCRF) at King Abdullah University of Science and Technology (KAUST), under the "Competitive Research Grant" (CRG) program.
dc.publisherRoyal Society of Chemistry (RSC)
dc.titleHow to repel hot water from a superhydrophobic surface?
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Materials Chemistry A
dc.contributor.institutionMaterials Research Lab., Wuxi Shunye Technology Co., Ltd., Shanshui Cheng Tech. Park, 29# Lianze Road, Binhu District, Wuxi Jiangsu 214125, China
dc.contributor.institutionDepartment of Biochemistry, Rosalind and Morris Goodman Cancer Research Centre, McGill University, 1160 Pine Ave. West, Montreal, QC H3A 1A3, Canada
dc.contributor.institutionLaboratory for the Analysis of the Surfaces of Materials, Department of Engineering Physics, École Polytechnique de Montreal, Case Postale 6079, succursale Centre-Ville, Montreal, QC H3C 3A7, Canada
kaust.personIsimjan, Tayirjan T.
kaust.acknowledged.supportUnitOffice of Competitive Research Funds (OCRF)
kaust.acknowledged.supportUnitCompetitive Research Grant" (CRG)


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