Phys. Rev. E 61, R9–R12 (2000)Dynamics of a penta-hepta defect in a hexagonal pattern
The structure and dynamics of a penta-hepta defect in a hexagonal pattern are studied experimentally. The hexagonal pattern is formed by placing a layer of soap bubbles (diameter ∼ 1 mm) on a flat glass plate. We find that an isolated penta-hepta defect in a bubble raft with free boundary always moves along the direction perpendicular to the wave vector of the nonsingular mode and towards the nearest boundary. The structure of the penta-hepta defect is found to be similar to that found in nonequilibrium pattern forming systems. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.61.R9
DOI:
10.1103/PhysRevE.61.R9
PACS:
47.54.+r, 61.72.-y, 47.55.Dz
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