In many industrial processes, foams are unwanted products. In order to destroy them, antifoaming agents are used… without really knowing how they act. Those antifoaming agents are dispersions of small particles, which need to break foam films efficiently. We have shown, for the first time, that buoyancy has an important part in the efficiency of those agents. In microgravity, we observed that foams added with antifoaming agent are stable for the duration of the experiment, whereas on Earth they start to disappear immediately.
Keywords3D printing antibubble biosensor bouncing capillary forces chaos cohesion collision colloids cracks droplet foam granular matter hypergravity instability Leidenfrost locomotion magnetism melting microfluidics microgravity monopole nanoparticle optofluidics packing percolation powder rheology segregation self-assembly soap film