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IMAGE: A rearrangement event in a monodisperse foam. Note how bubbles move in the same direction along the same row, or in exactly the opposite direction in adjacent rows over long. view more
Credit: Tokyo Metropolitan University
Tokyo, Japan - Researchers from Tokyo Metropolitan University studied the dynamics of foams. When a drop of water was added to a foam raft, the bubbles rearranged themselves to reach a new stable state. The team found that bubble movement was qualitatively different depending on the range of bubble sizes present. Along with analogies with soft-jammed materials, these findings may inspire the design of new foam materials for industry.