Two-dimensional bubble rafts

Two-dimensional bubble clustering in hydraulic jumps

Lamellar phase of stacked two-dimensional rafts of actin filaments.

We examined liquid crystalline phases of the cytoskeletal polyelectrolyte filamentous (F-)actin in the presence of multivalent counterions. As a function of increasing ion concentration, the F-actin rods in either an isotropic or a nematic phase will transform into a new and unexpected lamellar phase of cross-linked rafts (L(XR) phase), before condensing into a bundled phase of parallel, close-...

Uniqueness, stability and Hessian eigenvalues for two-dimensional bubble clusters

A recent conjecture on two-dimensional foams suggested that for fixed topology with given bubble areas there is a unique state of stable equilibrium. We present counter-examples, consisting of a ring of bubbles around a central one, which refute this conjecture. The discussion centres on a novel form of instability which causes symmetric clusters to become distorted. The stability of these bubb...

Bubble Growth in a Two-Dimensional Viscoelastic Foam

The effects of viscoelasticity on the expansion of gas bubbles arranged in a hexagonal array in a polymeric fluid are investigated. The expansion is driven by the diffusion of a soluble gas from the liquid phase, and the rate of expansion is controlled by a combination of gas diffusion, fluid rheology and surface tension. In the diffusion limited case, the initial growth rate is slow due to sma...

Correction: Stable small bubble clusters in two-dimensional foams.

Correction for 'Stable small bubble clusters in two-dimensional foams' by Kai Zhang et al., Soft Matter, 2017, DOI: .