Flow and Jamming of 2D foams

I will discuss experiments on bidisperse, disordered monolayers of foam bubbles, floating on a surfactant solution and confined by a glass plate. First I will present results on the linear shear of this system. I will show that the averaged features, such as the velocity profiles can be well understood by considering the viscous forces in the system. I will further present data on the localisation of the velocity profiles as a function of the packing fraction. I will then turn to static packings, in which we again vary the packing fraction of the bubbles and extract various measures that indicate that the foam exhibits a jamming transition at a critical packing fraction $\phi_c=0.842$.