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Boreyko JB, Hansen RR, Murphy KR, et al. Controlling condensation and frost growth with chemical micropatterns. Sci Rep. 2016;6:19131doi: 10.1038/srep19131.
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, 619131. https://doi.org/10.1038/srep19131
Boreyko, Jonathan B, et al. "Controlling condensation and frost growth with chemical micropatterns." Scientific reports vol. 6 (2016): 19131. doi: https://doi.org/10.1038/srep19131
Boreyko JB, Hansen RR, Murphy KR, Nath S, Retterer ST, Collier CP. Controlling condensation and frost growth with chemical micropatterns. Sci Rep. 2016 Jan 22;6:19131. doi: 10.1038/srep19131. PMID: 26796663; PMCID: PMC4726256.
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Sci Rep. 2016 Jan 22;6:19131. doi: 10.1038/srep19131.

Controlling condensation and frost growth with chemical micropatterns.

Scientific reports

Jonathan B Boreyko, Ryan R Hansen, Kevin R Murphy, Saurabh Nath, Scott T Retterer, C Patrick Collier

Affiliations

  1. Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia 24061, USA.
  2. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
  3. Bredesen Center for Interdisciplinary Research and Graduate Education, The University of Tennessee, Knoxville, Tennessee 37996, USA.
  4. Chemical Engineering Department, Kansas State University, Manhattan, Kansas 66506, USA.
  5. Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

PMID: 26796663 PMCID: PMC4726256 DOI: 10.1038/srep19131

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.

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