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Gas solubility in liquids forms liquid-gas solutions, such as soft drinks, where carbon dioxide is dissolved in water, and the ocean, where the solubility of oxygen and carbon dioxide supports marine life. The ability of oceans to dissolve gases impacts weather conditions in the troposphere.However, gas-liquid interactions vary. For instance, hydrogen chloride gas is highly soluble in water, while oxygen's solubility is much lower. Because these solutions are non-ideal, Raoult’s law,...
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Gas dissolution in antibubble dynamics.

B Scheid1, J Zawala, S Dorbolo

  • 1TIPs, Fluid Physics Unit, Université Libre de Bruxelles, B-1050 Bruxelles, Belgium. bscheid@ulb.ac.be.

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Summary
This summary is machine-generated.

Antibubble longevity depends on dissolved air in the liquid. Air can escape via drainage or dissolution, impacting antibubble shell thinning and collapse, contrary to previous assumptions.

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Area of Science:

  • Colloid and Surface Science
  • Fluid Dynamics
  • Materials Science

Background:

  • Antibubbles, inverse bubbles with a liquid shell and gas core, are known for their short lifetimes.
  • Their stability has been primarily attributed to the drainage of the liquid shell driven by hydrostatic pressure.

Purpose of the Study:

  • To investigate the mechanisms governing antibubble lifetime beyond simple liquid drainage.
  • To explore the role of dissolved gas content in the surrounding liquid on antibubble stability.
  • To reconcile experimental observations with theoretical models of antibubble collapse.

Main Methods:

  • Experimental observation of antibubble lifetimes using varying water aeration levels.
  • Development and application of time-dependent simulations to model air transport within the antibubble shell.
  • Analysis of the interplay between liquid drainage and gas dissolution.

Main Results:

  • Antibubble lifetime is significantly influenced by the gas content of the liquid, not solely by shell drainage.
  • Two distinct pathways for air escape exist: hydrostatic drainage and gas dissolution into the liquid.
  • Gas dissolution as a collapse mechanism is independent of the antibubble radius.

Conclusions:

  • The stability of antibubbles is critically dependent on both interfacial properties and the dissolved gas concentration in the surrounding liquid.
  • Previous models focusing solely on drainage are incomplete; gas dissolution must be considered.
  • The radius-independent nature of gas dissolution explains previously puzzling experimental data in antibubble research.