Boiling heat transfer on superhydrophilic, superhydrophobic, and superbiphilic surfaces

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Show simple item record Betz, Amy Rachel Jenkins, James Kim, Chang-Jin Attinger, Daniel 2013-07-09T20:53:56Z 2013-07-09T20:53:56Z 2013-02-01
dc.description.abstract With recent advances in micro- and nanofabrication, superhydrophilic and superhydrophobic surfaces have been developed. The statics and dynamics of fluids on these surfaces have been well characterized. However, few investigations have been made into the potential of these surfaces to control and enhance other transport phenomena. In this article, we characterize pool boiling on surfaces with wettabilities varied from superhydrophobic to superhydrophilic, and provide nucleation measurements. The most interesting result of our measurements is that the largest heat transfer coefficients are reached not on surfaces with spatially uniform wettability, but on biphilic surfaces, which juxtapose hydrophilic and hydrophobic regions. We develop an analytical model that describes how biphilic surfaces effectively manage the vapor and liquid transport, delaying critical heat flux and maximizing the heat transfer coefficient. Finally, we manufacture and test the first superbiphilic surfaces (juxtaposing superhydrophobic and superhydrophilic regions), which show exceptional performance in pool boiling, combining high critical heat fluxes over 100 W/cm² with very high heat transfer coefficients, over 100 kW/m²K. en_US
dc.language.iso en_US en_US
dc.relation.uri en_US
dc.rights This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.subject Superhydrophobic en_US
dc.subject Superhydrophilic en_US
dc.subject Biphilic en_US
dc.subject Enhanced heat transfer en_US
dc.subject Pool boiling en_US
dc.subject Nucleation en_US
dc.title Boiling heat transfer on superhydrophilic, superhydrophobic, and superbiphilic surfaces en_US
dc.type Article (author version) en_US 2013 en_US
dc.citation.doi 10.1016/j.ijheatmasstransfer.2012.10.080 en_US
dc.citation.epage 741 en_US
dc.citation.issue 2 en_US
dc.citation.jtitle International Journal of Heat and Mass Transfer en_US
dc.citation.spage 733 en_US
dc.citation.volume 57 en_US
dc.contributor.authoreid arbetz en_US

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