77th Annual Meeting of the APS Division of Fluid Dynamics (November 24, 2024 — November 26, 2024)

P2690752: Surface tension induced heterogeneities in liquid sheets of emulsion

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Authors

• Sara Gonzalez, University of California, Santa Barbara
• Emilie Dressaire, University of California, Santa Barbara

DOI: https://doi.org/10.1103/APS.DFD.2024.GFM.P2690752

Upon impacting a small target, a drop of emulsion forms a transient self-suspended liquid sheet. The destabilization of the sheet can be associated with localized thinning and even hole nucleation. At high surfactant concentration in the continuous aqueous phase and no surfactant in the dispersed oil phase, the sheet is stable. Emulsions with intermediate surfactant concentration exhibit localized thinning regions and hole nucleation, which leads to less stable sheets. Emulsions with large surfactant concentrations in the oil phase are less stable and show more locally thin regions and holes.