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Foamability and structure analysis of foams in Hele-Shaw cell
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Image of FIG. 1.
FIG. 1.

Evolution of the number of bubbles composing the foam as a function of the number of flips. Three surfactants are illustrated: PS, SLS, and SLES. The continuous curves are fits using Eq. (1).

Image of FIG. 2.
FIG. 2.

Typical images of the foam after , 15, and 30 flips. Three surfactant molecules are illustrated: (a) PS, (b) SLS, and (c) SLES.

Image of FIG. 3.
FIG. 3.

Probability distribution function of the number of bubble sides after , 15, and 30 flips in the case of SLES molecules. Solid curves are guides for the eyes using Gaussian fits, emphasizing mean values.

Image of FIG. 4.
FIG. 4.

Second moment of the distribution of number of bubble sides as a function of the successive flips . Three surfactant molecules are illustrated.

Image of FIG. 5.
FIG. 5.

Probability for finding two small bubbles of the same size apart from a distance . The size of the bubble is 20% of the mean bubble size.


Generic image for table
Table I.

Comparison between fitting parameters: (i) and for the foam evolution using Eq. (1), (ii) computed after 30 flips for the number of sides, and (iii) for the bubble size correlations. Error bars are indicated.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Foamability and structure analysis of foams in Hele-Shaw cell