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Phys. Rev. Lett. 98, 204502 (2007) [4 pages]

Superstability of Surface Nanobubbles

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Bram M. Borkent1,2, Stephan M. Dammer1,2, Holger Schönherr2,3, G. Julius Vancso2,3, and Detlef Lohse1,2
1Physics of Fluids, Faculty of Science and Technology and J. M. Burgers Centre for Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
2MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
3Materials Science and Technology of Polymers, Faculty of Science and Technology, University of Twente,P.O. Box 217, 7500 AE Enschede, The Netherlands

Received 13 January 2007; published 16 May 2007

See accompanying Physics Focus

Shock wave induced cavitation experiments and atomic force microscopy measurements of flat polyamide and hydrophobized silicon surfaces immersed in water are performed. It is shown that surface nanobubbles, present on these surfaces, do not act as nucleation sites for cavitation bubbles, in contrast to the expectation. This implies that surface nanobubbles are not just stable under ambient conditions but also under enormous reduction of the liquid pressure down to -6  MPa. We denote this feature as superstability.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.204502
DOI:
10.1103/PhysRevLett.98.204502
PACS:
47.55.dp, 68.08.−p, 68.37.Ps
 
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