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Knudsen Gas Provides Nanobubble Stability
Seddon, James R.T. and Zandvliet, Harold J.W. and Lohse, Detlef (2011) Knudsen Gas Provides Nanobubble Stability. Physical Review Letters, 107 (11). p. 116101. ISSN 0031-9007
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| Abstract: | We provide a model for the remarkable stability of surface nanobubbles to bulk dissolution. The key to the solution is that the gas in a nanobubble is of Knudsen type. This leads to the generation of a bulk liquid flow which effectively forces the diffusive gas to remain local. Our model predicts the presence of a vertical water jet immediately above a nanobubble, with an estimated speed of ∼3.3 m/s, in good agreement with our experimental atomic force microscopy measurement of ∼2.7 m/s. In addition, our model also predicts an upper bound for the size of nanobubbles, which is consistent with the available experimental data.
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| Item Type: | Article |
| Copyright: | © American Physical Society |
| Faculty: | Science and Technology (TNW) |
| Research Group: | |
| Link to this item: | http://purl.utwente.nl/publications/78754 |
| Official URL: | http://dx.doi.org/10.1103/PhysRevLett.107.116101 |
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Metis ID: 278049