title: Bounded step superdiffusion in an oriented hexagonal phase.
abstract: Fluorescence recovery after pattern photobleaching is used to measure the self-diffusion of surfactant molecules, along cylinders and perpendicular to their main axis in an oriented hexagonal lyotropic phase. Unexpectedly, while the motion along cylinders is diffusive, a superdiffusive behavior is observed in the direction perpendicular to the cylinder axis. Moreover, varying the lattice parameter, we found that the perpendicular diffusion time is governed only by the number of cylinders to cross, providing experimental evidence for superdiffusion with a bounded step length.
authors.affiliation: Laboratoire de Physique Statistique de l'Ecole Normale Superieure, UMR CNRS 8550, 24 rue Lhomond, 75005 Paris, France.
authors.forename: Yann
authors.initials: Y
authors.lastname: Gambin
authors.forename: Gladys
authors.initials: G
authors.lastname: Massiera
authors.forename: Laurence
authors.initials: L
authors.lastname: Ramos
authors.forename: Christian
authors.initials: C
authors.lastname: Ligoure
authors.forename: Wladimir
authors.initials: W
authors.lastname: Urbach