Bursting of Dilute Emulsion-Based Liquid Sheets Driven by a Marangoni Effect Auteur(s): Vernay C., Ramos L., Ligoure C. (Article) Publié: Physical Review Letters, vol. 115 p.198302 (2015) Texte intégral en Openaccess : Ref HAL: hal-01225954_v1 Ref Arxiv: 1511.00451 DOI: 10.1103/PhysRevLett.115.198302 WoS: 000364216600008 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 19 Citations Résumé: We study the destabilization mechanism of thin liquid sheets expanding in air and show that dilute oil-in-water emulsion-based sheets disintegrate through the nucleation and growth of holes that perforate the sheet. The velocity and thickness fields of the sheet outside the holes are not perturbed by holes and hole opening follows a Taylor-Culick law. We find that a pre-hole, which widens and thins out the sheet with time, systematically precedes the hole nucleation. The growth dynamics of the pre-hole follows the law theoretically predicted for a liquid spreading on another liquid of higher surface tension due to Marangoni stresses. Classical Marangoni spreading experiments quantitatively corroborate our findings. |