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Article Dans Une Revue EPL - Europhysics Letters Année : 2006

Dislocation-loop-mediated smectic melting

Résumé

We report the direct observation, using freeze-fracture transmission electron microscopy, of topological melting in a lyotropic system in the vicinity of a smectic-cholesteric (N*) phase transition. The proliferation of dislocations leads to at least one, and possibly two intermediate phases, characterised by orientational ordering of the dislocation loops and the subsequent unbinding of the screw-dislocation lines. PACS

Domaines

Matériaux

Dates et versions

hal-00018865 , version 1 (10-02-2006)

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Citer

P. Moreau, L. Navailles, J. Giermanska-Kahn, O. Mondain-Monval, F. Nallet, et al.. Dislocation-loop-mediated smectic melting. EPL - Europhysics Letters, 2006, 73(1), p. 49-54. ⟨10.1209/epl/i2005-10348-y⟩. ⟨hal-00018865⟩

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