Flower-shaped structures around bubbles collapsing in a bubble monolayer

Abstract

In this paper, high-speed macro-photography is used to investigate the dynamics of small bubbles collapsing at the free surface of a glass when filled with champagne. Immediately after the rupture of a bubble cap, adjoining bubbles are stretched toward the lowest part of the cavity left by the bursting bubble, leading to unexpected and short-lived flower-shaped structures. Our results strongly suggest stresses in the bubble cap of adjacent bubbles much higher than those observed around an isolated single collapsing cavity.