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Bubble nucleation on hydrophobic islands provides evidence to anomalously high contact angles of nanobubbles
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10.1063/1.2981572
/content/aip/journal/apl/93/10/10.1063/1.2981572
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/10/10.1063/1.2981572
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the pool boiling experimental setup.

Image of FIG. 2.
FIG. 2.

Superheat required for bubble nucleation on each hydrophobic island. Case I: onset of nucleation; case II: sustenance of nucleation; case III: onset of nucleation (with water subjected to of degassing).

Image of FIG. 3.
FIG. 3.

Predicted temperature dependence of the net number flux of bubble embryos on smooth surfaces with different contact angles. The empirical threshold value of for bubble nucleation is , which implies that contact angles would be necessary to have the minimum superheat below required for bubble nucleation.

Image of FIG. 4.
FIG. 4.

Predicted minimum superheat for bubble nucleation as a function of the nanobubble base radius and contact angle with water.

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/content/aip/journal/apl/93/10/10.1063/1.2981572
2008-09-12
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Bubble nucleation on hydrophobic islands provides evidence to anomalously high contact angles of nanobubbles
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/10/10.1063/1.2981572
10.1063/1.2981572
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