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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.
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https://hal.archives-ouvertes.fr/hal-00073988
Contributor : Vincent Laude <>
Submitted on : Wednesday, May 24, 2006 - 2:15:07 PM
Last modification on : Thursday, December 17, 2020 - 4:04:05 PM

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Abdelkrim Khelif, Mikael Wilm, Vincent Laude, Sylvain Ballandras. Guided elastic waves along a rod-defect of a two-dimensional phononic crystal. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2004, 69, pp.067601. ⟨10.1103/PhysRevE.69.067601⟩. ⟨hal-00073988⟩

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