Dynamic Equilibrium Mechanism for Surface Nanobubble Stabilization

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Dynamic Equilibrium Mechanism for Surface Nanobubble Stabilization

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Title: Dynamic Equilibrium Mechanism for Surface Nanobubble Stabilization
Author: Brenner, Michael; Lohse, Detlef

Note: Order does not necessarily reflect citation order of authors.

Citation: Brenner, Michael P. and Detlef Lohse. 2008. Dynamic equilibrium mechanism for surface nanobubble stabilization. Physical Review Letters 101(21): 214505(1-4).
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Abstract: Recent experiments have convincingly demonstrated the existence of surface nanobubbles on submerged hydrophobic surfaces. However, classical theory dictates that small gaseous bubbles quickly dissolve because their large Laplace pressure causes a diffusive outflux of gas. Here we suggest that the bubbles are stabilized by a continuous influx of gas near the contact line, due to the gas attraction towards hydrophobic walls [Dammer and Lohse, Phys. Rev. Lett. 96, 206101 (2006); Zhang et al., Phys. Rev. Lett. 98, 136101 (2007); Mezger et al., J. Chem. Phys. 128, 244705 (2008)]. This influx balances the outflux and allows for a metastable equilibrium, which, however, vanishes in thermodynamic equilibrium. Our theory predicts the equilibrium radius of the surface nanobubbles, as well as the threshold for surface nanobubble formation as a function of hydrophobicity and gas concentration.
Published Version: http://dx.doi.org/10.1103/PhysRevLett.101.214505
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:2757497
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