title: Anisotropic nonlinear elastic properties of an icosahedral quasicrystal
abstract: We show that the nonlinear behavior of transverse acoustic waves can reveal the anisotropic structure of an icosahedral quasicrystal, at the macroscopic level. We report experiments performed in i-Al-Pd-Mn. We observe that a primary transverse acoustic wave can generate a second harmonic transverse acoustic wave. We also observe a specific relation between the polarization directions of those waves. These observations are manifestations on a macroscopic scale of the long-range order in quasicrystals.
authors.affiliation: LMDH, Universite Pierre et Marie Curie/CNRS (UMR 7603), Boite 86, 4, place Jussieu, 75252 Paris Cedex 05, France.
authors.initials: J
authors.lastname: Duquesne
authors.initials: B
authors.lastname: Perrin