A review of recent theoretical and computational studies on pinned surface nanobubbles

  title={A review of recent theoretical and computational studies on pinned surface nanobubbles},
  author={Yawei Liu and Xianren Zhang},
  journal={Chinese Physics B},
The observations of long-lived surface nanobubbles in various experiments have presented a theoretical challenge, as they were supposed to be dissolved in microseconds owing to the high Laplace pressure. However, an increasing number of studies suggest that contact line pinning, together with certain levels of oversaturation, is responsible for the anomalous stability of surface nanobubbles. This mechanism can interpret most characteristics of surface nanobubbles. Here, we summarize recent… 
11 Citations
Surface Nanobubbles with Fixed Boundaries
The formation and stability of surface-charged nanobubbles with fixed boundaries of substrate contact (so-called “pinning of contact lines”) was studied theoretically. Thermodynamic analysis showed
Mechanisms of Nucleation and Stationary States of Electrochemically Generated Nanobubbles.
Molecular simulations with an algorithm that mimics the electrochemical formation of gas are used to investigate the mechanisms of nucleation of gas bubbles on nanoelectrodes, and characterize their stationary states, concluding that all surface nanobubbles must nucleate heterogeneously.
Stability of Charged Nanobubbles in Water
It is shown that experimentally discovered nanosized bubbles in a water medium arise spontaneously due to the minimization of the Gibbs energy of the gas–liquid disperse system. Increased gas
Effect of Sodium Oleate on the Adsorption Morphology and Mechanism of Nanobubbles on the Mica Surface.
This study will help understand the interaction between nanobubbles and collectors to further apply nanobUBbles to treat fine-grained mineral particles.
Plasma physics of liquids—A focused review
The interaction of plasma with liquids has led to various established industrial implementations as well as promising applications, including high-voltage switching, chemical analysis, nanomaterial
Stimuli-responsive nanobubbles for biomedical applications.
An overview of the recent advances in the development of stimuli-responsive nanobubbles and their novel applications and the methods used for synthesis and characterization are presented.
The essential role of the plasma sheath in plasma–liquid interaction and its applications—A perspective
Based on the current knowledge, a plasma–liquid interface looks and behaves very differently from its counterpart at a solid surface. Local processes characteristic to most liquids include a stronger


Nanobubble stability induced by contact line pinning.
Using the constrained lattice density functional theory (LDFT) and kinetic LDFT, it is proved thermodynamically and dynamically that the state with nanobubbles is in fact a thermodynamic metastable state.
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.
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.
Contact line pinning and the relationship between nanobubbles and substrates.
It is found that for stable nanobubbles, the contact angles are independent of substrate chemistry as its effects are cancelled out by the pinning effect.
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 Nanobubbles: A Molecular Dynamics Study.
Equilibrium simulations of surface nanobubbles at different gas oversaturation levels ζ > 0 reveal how pinning of the three-phase contact line on the surface can lead to the stability of the surface Nanobubble, provided that the concentration of the dissolved gas is oversaturated.
Knudsen gas provides nanobubble stability.
The 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 the experimental atomic force microscopy measurement, which is consistent with the available experimental data.
Pinning Down the Reasons for the Size, Shape, and Stability of Nanobubbles.
  • P. Attard
  • Physics, Materials Science
    Langmuir : the ACS journal of surfaces and colloids
  • 2016
A thermodynamic analysis of the size, shape, and stability of nanobubbles is carried out by modifying classical nucleation theory to include the supersaturation dependence of the surface tension. It
Molecular dynamics simulation of nanobubble nucleation on rough surfaces.
Simulation results reveal the coexistence and transition between the Wenzel, Cassie, and nanobubble states on rough surfaces and show opposing dependencies on the degree of surface roughness, indicating that the surfaces with moderate roughness are favorable for forming stable surface Nanobubbles.
Spatial organization of surface nanobubbles and its implications in their formation process.
The analysis of Atomic Force Microscopy images of nanobubbles formed on a hydrophobic surface reveals that the nanobubs are not randomly located, and the size and spatial distribution is found to be strongly correlated with the area of the bubble-depleted zone around it.