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Do surfaces with mixed hydrophilic and hydrophobic areas enhance pool boiling?
Applied Physics Letters (2010)
  • Amy Rachel Betz, Columbia University
  • Jie Xu, Washington State University
  • Huihe Qiu, Columbia University
  • Daniel Attinger, Columbia University
We demonstrate that smooth and flat surfaces combining hydrophilic and hydrophobicpatterns improve pool boiling performance. Compared to a hydrophilicsurface with 7° wetting angle, the measured critical heat flux and heat transfer coefficients of the enhanced surfaces are, up to respectively, 65% and 100% higher. Different networks combining hydrophilic and hydrophobic regions are characterized. While all tested networks enhance the heat transfer coefficient, large enhancements of critical heat flux are typically found for hydrophilic networks featuring hydrophobic islands. Hydrophilic networks indeed are shown to prevent the formation of an insulating vapor layer.
  • Hydrophilic interactions,
  • hydrophobic interactions,
  • surface patterning,
  • surface finishing,
  • nucleation
Publication Date
October 6, 2010
Publisher Statement
The following article appeared in Applied Physics Letters 97, 141909 (2010); and may be found at, doi:10.1063/1.3485057. Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Citation Information
Amy Rachel Betz, Jie Xu, Huihe Qiu and Daniel Attinger. "Do surfaces with mixed hydrophilic and hydrophobic areas enhance pool boiling?" Applied Physics Letters Vol. 97 Iss. 141909 (2010)
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