Droplet Coalescence and Freezing on Hydrophilic, Hydrophobic, and Biphilic Surfaces

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dc.contributor.author Van Dyke, Alexander S. en_US
dc.contributor.author Collard, Diane en_US
dc.contributor.author Derby, Melanie M. en_US
dc.contributor.author Betz, Amy Rachel en_US
dc.date.accessioned 2015-11-11T18:36:03Z
dc.date.available 2015-11-11T18:36:03Z
dc.identifier.uri http://hdl.handle.net/2097/20503
dc.description Frost and ice formation can have severe negative consequences, such as aircraft safety and reliability. At atmospheric pressure, water heterogeneously condenses and then freezes at low temperatures. To alter this freezing process, this research examines the effects of biphilic surfaces (surfaces which combine hydrophilic and hydrophobic regions) on heterogeneous water nucleation, growth, and freezing. Silicon wafers were coated with a self-assembled monolayer and patterned to create biphilic surfaces. Samples were placed on a freezing stage in an environmental chamber at atmospheric pressure, at a temperature of 295 K, and relative humidities of 30%, 60%, and 75%. Biphilic surfaces had a significant effect on droplet dynamics and freezing behavior. The addition of biphilic patterns decreased the temperature required for freezing by 6 K. Biphilic surfaces also changed the size and number of droplets on a surface at freezing and delayed the time required for a surface to freeze. The main mechanism affecting freezing characteristics was the coalescence behavior. en_US
dc.description Citation: A. Van Dyke, D. Collard, M. M. Derby and A. R. Betz, "Droplet Coalescence and Freezing on Hydrophilic, Hydrophobic, and Biphilic Surfaces," Applied Physics Letters, 107, Issue 14, 2015 en_US
dc.relation.uri http://dx.doi.org/10.1063/1.4932050 en_US
dc.rights.uri http://www.sherpa.ac.uk/romeo/issn/0003-6951/ en_US
dc.subject Biphilic en_US
dc.subject droplet coalescence en_US
dc.subject freezing en_US
dc.subject frost en_US
dc.title Droplet Coalescence and Freezing on Hydrophilic, Hydrophobic, and Biphilic Surfaces en_US
dc.date.published 2015 en_US
dc.citation.doi 10.1063/1.4932050 en_US
dc.citation.issue 14 en_US
dc.citation.jtitle Applied Physics Letters en_US
dc.citation.spage 141602 en_US
dc.citation.volume 107 en_US
dc.contributor.authoreid derbym en_US
dc.contributor.authoreid arbetz en_US

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