Knudsen gas provides nanobubble stability.

@article{Seddon2011KnudsenGP,
  title={Knudsen gas provides nanobubble stability.},
  author={James Richard Thorley Seddon and Harold J. W. Zandvliet and Detlef Lohse},
  journal={Physical review letters},
  year={2011},
  volume={107 11},
  pages={
          116101
        }
}
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… 
View on PubMed
arxiv.org
104 Citations
Highly Influential Citations
1
Background Citations
12
Methods Citations
1
Results Citations
1

Figures from this paper

104 Citations

Surface Nanobubbles Are Stabilized by Hydrophobic Attraction.

This model shows that, in this model, only substrate pinning is strictly required for stabilization; while hydrophobicity and supersaturation both aid stability, neither is mandatory-the absence of one can be compensated by an excess of the other.

A History of Nanobubbles.

The history of nanobubbles is followed from the earliest experiments pointing to their existence to recent years, and the dominant approach to understanding bubble stability becomes a consideration of the rate of bubble dissolution.

Diffusive shielding stabilizes bulk nanobubble clusters.

  • J. WeijsJ. SeddonD. Lohse
  • Physics, Economics
    Chemphyschem : a European journal of chemical physics and physical chemistry
  • 2012
It is found that, as long as the bubble-bubble interspacing is small enough, bulk nanobubbles are stable against dissolution, and simple diffusion calculations provide an excellent match with the simulation results, giving insight into the reason for the stability.

Computational investigation of the stability and dissolution of nanobubbles

Hidden Nanobubbles in Undersaturated Liquids.

This work proposes theoretically the existence of a new type of nanobubble in undersaturated liquids that has a concave vapor-liquid interface featured with a negative curvature rather than a positive curvature and whose curvature radius is dependent on the chemical potential but independent of the base radius.

Stability of surface and bulk nanobubbles

Investigating Interfacial Effects on Surface Nanobubbles without Pinning Using Molecular Dynamics Simulation.

It is concluded that gas nanobubble stability does not necessarily require three-phase pinning sites, and the gas enrichment layer, gas adsorption monolayer on the hydrophobic substrate, and water hydrogen bonding near the interface are likely necessary conditions for nanobUBble stability.

Molecular Dynamics Simulation of nanobubbles in the bulk and on the substrate

Nanobubbles are considered to be one origin of characteristic behaviors of fluids in microscopic systems, such as boundary slip in channels and long-range attractive force acting between hydrophobic…

Understanding the stability of surface nanobubbles

The result demonstrates that surface nanobubbles are kinetically stable and the liquid/gas interface is gas impermeable, and suggests that surface Nanobubble may be stabilized by a layer which has a great diffusive resistance.

Why surface nanobubbles live for hours.

A theoretical model is presented that can explain why, under normal experimental conditions, surface nanobubbles are stable for many hours or even up to days rather than the expected microseconds.
...

References

SHOWING 1-10 OF 52 REFERENCES

Nanoscience : Colloidal and Interfacial Aspects

Forces in Nanosystems Surface Forces in Nanostructures, N. V. Churaev and V. D. Sobolev Effects of Nanoparticles on Forces between Colloids in Solution, J. Y. Walz Surface Forces and Nanoscale…

12

: Simultaneous MIMO-free transmission of 12 orbital angular momentum (OAM) modes over a 1.2 km air-core fiber is demonstrated. WDM compatibility of the system is shown by using 60, 25 GHz spaced WDM…

The Influence of Nanobubbles on Colloid Stability

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 2008

acknowledge funding from the European Community's Seventh Framework Programme (FP7/ 2007-2013) under Grant Agreement No

  • 235873 and from the Foundation for Fundamental Research on Matter (FOM), which is sponsored by the Netherlands Organization for Scientific Research (NWO)

J. Colloid Interface Sci

  • J. Colloid Interface Sci
  • 2004

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 2011

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 2001

Cond

  • Mat. 23, 133001
  • 2011

Phys

  • Rev. E 82, 056310
  • 2010
...