Document Europhys. Lett, 35 (7), pp. 547-552 (1996)
Structural transitions in ordered, cylindrical foams
N. Pittet 
, P. Boltenhagen 
, N. Rivier 
and D. Weaire 
Laboratoire de Physique Théorique, Université Louis Pasteur, 3 rue de l'Université,
F-67084 Strasbourg Cedex, France
Laboratoire d'Ultrasons et de Dynamique des Fluides Complexes, URA no. 851
Université Louis Pasteur - 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France
Department of Pure and Applied Physics, Trinity College, Dublin, Ireland
(received 30 October 1995; accepted in final form 9 July 1996)
PACS. 84.20+m - Circuit theory (including analysis and design of networks).
PACS. 61.72-y - Defects in crystals.
PACS. 63.75+z - Statistical mechanics of displacive phase transitions.
Abstract:
A soap froth with bubbles of equal size in a cylindrical tube tends to crystallise. We exhibit, experimentally and by simulation, two sequences of transitions between different crystalline structures. Each transition is induced by a single dislocation. The two different sequences of transitions are associated with different motions of the dislocation.
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