Document Detail


Stability of a flat gas-liquid interface containing nonidentical spheres to gas transport: toward an explanation of particle stabilization of gas bubbles.
MedLine Citation:
PMID:  16032869     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
It is shown that a flat interface between a soluble gas and a liquid that contains an arbitrary number of partially wetting nonidentical spheres is linearly stable to slight perturbations caused by fluctuations in the gas volume. Stability is proved by showing that the rate of change of the volume of the gas with curvature of the interface is positive in the neighborhood of the equilibrium state of zero interface curvature. Physically, the volume fluctuations induce fluctuations in the curvature of the interface that would naturally lead to dissolution of gas into the liquid in the case of positive curvature and entry of gas into the bubble in the case of negative curvature, either of which restores equilibrium. This result may possibly explain the unusual long-term stability of gas bubbles covered by colloidal particles in the recent experiments of Du et al. (Du, Z.; Bilbao-Montoya, M. P.; Binks, B. P.; Dickinson, E.; Ettelaie, R.; Murray, B. S. Langmuir 2003, 19, 3106).
Authors:
R Shankar Subramanian; Ryan J Larsen; Howard A Stone
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  21     ISSN:  0743-7463     ISO Abbreviation:  Langmuir     Publication Date:  2005 May 
Date Detail:
Created Date:  2005-07-21     Completed Date:  2006-06-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4526-31     Citation Subset:  -    
Affiliation:
Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
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