title: Guided elastic waves along a rod defect of a two-dimensional phononic crystal.
abstract: It was shown that elastic waves propagating out-of-plane in a two-dimensional phononic crystal can experience full-band-gaps for nonzero values of the wave-vector component parallel to the rods. By further inserting a rod defect, it is demonstrated that modes propagating along the rod defect can be localized within the band-gaps of the phononic crystal. Such waveguide modes are exhibited for a tungsten/epoxy composite containing an aluminum nitride rod as the rod defect. It is expected that guided modes of such a structure can be excited and detected electrically owing to the piezoelectric effect.
authors.affiliation: Institut FEMTO-ST, Département LPMO, CNRS UMR 6174, 32 avenue de I'Observatoire, 25044 Besançon cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: Khelif
authors.forename: M
authors.initials: M
authors.lastname: Wilm
authors.forename: V
authors.initials: V
authors.lastname: Laude
authors.forename: S
authors.initials: S
authors.lastname: Ballandras
authors.forename: B
authors.initials: B
authors.lastname: Djafari-Rouhani