Secondary Bubble Entrainment via Primary Bubble Bursting at a Viscoelastic Surface

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Bingqiang Ji
  • Zhengyu Yang
  • Zirui Wang
  • Randy H. Ewoldt
  • Jie Feng

Detail(s)

Original languageEnglish
Article number104002
Journal / PublicationPhysical Review Letters
Volume131
Issue number10
Online published7 Sept 2023
Publication statusPublished - 8 Sept 2023
Externally publishedYes

Abstract

Bubble bursting at liquid surfaces is ubiquitous and plays a key role for the mass transfer across interfaces, impacting global climate and human health. Here, we document an unexpected phenomenon that when a bubble bursts at a viscoelastic surface of a bovine serum albumin solution, a secondary (daughter) bubble is entrapped with no subsequent jet drop ejection, contrary to the counterpart experimentally observed at a Newtonian surface. We show that the strong surface dilatational elastic stress from the viscoelastic surface retards the cavity collapse and efficiently damps out the precursor waves, thus facilitating the dominant wave focusing above the cavity nadir. The onset of daughter bubble entrainment is well predicted by an interfacial elastocapillary number comparing the effects of surface dilatational elasticity and surface tension. Our Letter highlights the important role of surface rheology on free surface flows and may find important implications in bubble dynamics with a contaminated interface exhibiting complex surface rheology. © 2023 American Physical Society.

Citation Format(s)

Secondary Bubble Entrainment via Primary Bubble Bursting at a Viscoelastic Surface. / Ji, Bingqiang; Yang, Zhengyu; Wang, Zirui et al.
In: Physical Review Letters, Vol. 131, No. 10, 104002, 08.09.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review