Giant deformations and topological hysteresis of an ordered foam
Laboratoire de Dynamique des Fluides Complexes, Université Louis Pasteur, UMR 7506 - 3 rue de l'Université, F-67084, Strasbourg Cedex, France
2 Groupe Matière Condensée et Matériaux, Université de Rennes 1, Campus Beaulieu, 35042 Rennes Cedex, France
Accepted: 17 July 1998
An ordered soap froth is created in a cylindrical tube. By dilating (up to 500%) and compressing the froth, we observe sequences of structural transitions. After dilation followed by compression, the froth recovers its initial structure, but the sequences of intermediate structures upon dilation and upon compression are different. This topological hysteresis is explained by creation and motion of a single dislocation as suggested by a recent work of the present authors.
PACS: 61.72.-y – Defects and impurities in crystals; microstructure / 63.70.+h – Statistical mechanics of lattice vibrations and displacive phase transitions / 84.30.Bv – Circuit theory (including computer-aided circuit design and analysis)
© EDP Sciences, 1998