Journal
PHYSICAL REVIEW LETTERS
Volume 129, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.268001
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Funding
- French National Research Agency [ANR-19-CE30-0002]
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Recent advances have shown that evaporation plays a significant role in the stability of soap films, leading to film thinning and cooling. A model has been proposed to describe the temperature drop of soap films after formation.
Recent advances have demonstrated that evaporation can play a significant role on soap film stability, which is a key concern in many industrial areas but also for children playing with bubbles. Thus, evaporation leads to a film thinning but also to a film cooling, which has been overlooked for soapy objects. Here, we study the temperature variation of an evaporating soap film for different values of relative humidity and glycerol concentrations. We evidence that the temperature of soap films can decrease after their creation up to 8 degrees C. We propose a model describing the temperature drop of soap films after their formation that is in quantitative agreement with our experiments. We emphasize that this cooling effect is significant and must be carefully considered in future studies on the dynamics of soap films.
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