Controlling condensation and frost growth with chemical micropatterns

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Show simple item record Boreyko, J. B. Hansen, Ryan R. Murphy, K. R. Nath, S. Retterer, S. T. Collier, C. P. 2016-09-20T17:32:48Z 2016-09-20T17:32:48Z
dc.description Citation: Boreyko, J. B., Hansen, R. R., Murphy, K. R., Nath, S., Retterer, S. T., & Collier, C. P. (2016). Controlling condensation and frost growth with chemical micropatterns. Scientific Reports, 6, 15. doi:10.1038/srep19131
dc.description.abstract In-plane frost growth on chilled hydrophobic surfaces is an inter-droplet phenomenon, where frozen droplets harvest water from neighboring supercooled liquid droplets to grow ice bridges that propagate across the surface in a chain reaction. To date, no surface has been able to passively prevent the in-plane growth of ice bridges across the population of supercooled condensate. Here, we demonstrate that when the separation between adjacent nucleation sites for supercooled condensate is properly controlled with chemical micropatterns prior to freezing, inter-droplet ice bridging can be slowed and even halted entirely. Since the edge-to-edge separation between adjacent supercooled droplets decreases with growth time, deliberately triggering an early freezing event to minimize the size of nascent condensation was also necessary. These findings reveal that inter-droplet frost growth can be passively suppressed by designing surfaces to spatially control nucleation sites and by temporally controlling the onset of freezing events.
dc.rights Attribution 4.0 International (CC BY 4.0)
dc.subject Superhydrophobic Surfaces
dc.subject Dropwise Condensation
dc.subject Heat-Transfer
dc.subject Supercooled Water
dc.subject Ice Nucleation
dc.subject Solid-Surfaces
dc.title Controlling condensation and frost growth with chemical micropatterns
dc.type Article 2016
dc.citation.doi 10.1038/srep19131
dc.citation.issn 2045-2322
dc.citation.jtitle Scientific Reports
dc.citation.spage 15
dc.citation.volume 6
dc.contributor.authoreid rrhansen

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Attribution 4.0 International (CC BY 4.0) Except where otherwise noted, the use of this item is bound by the following: Attribution 4.0 International (CC BY 4.0)

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