Waveguiding inside the complete band gap of a phononic crystal slab

Fu Li Hsiao; Abdelkrim Khelif; Hanane Moubchir; Abdelkrim Choujaa; Chii Chang Chen; Vincent Laude

doi:10.1103/PhysRevE.76.056601

Waveguiding inside the complete band gap of a phononic crystal slab

Fu Li Hsiao^*
, Abdelkrim Khelif
, Hanane Moubchir
, Abdelkrim Choujaa
, Chii Chang Chen
, Vincent Laude

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

107 Citations (Scopus)

Abstract

The propagation of acoustic waves in a square-lattice phononic crystal slab consisting of a single layer of spherical steel beads in a solid epoxy matrix is studied experimentally. Waves are excited by an ultrasonic transducer and fully characterized on the slab surface by laser interferometry. A complete band gap is found to extend around 300 kHz, in good agreement with theoretical predictions. The transmission attenuation caused by absorption and band gap effects is obtained as a function of frequency and propagation distance. Well confined acoustic wave propagation inside a line-defect waveguide is further observed experimentally.

Original language	English
Article number	056601
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	76
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevE.76.056601
Publication status	Published - 8 Nov 2007
Externally published	Yes

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10.1103/PhysRevE.76.056601

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abstract = "The propagation of acoustic waves in a square-lattice phononic crystal slab consisting of a single layer of spherical steel beads in a solid epoxy matrix is studied experimentally. Waves are excited by an ultrasonic transducer and fully characterized on the slab surface by laser interferometry. A complete band gap is found to extend around 300 kHz, in good agreement with theoretical predictions. The transmission attenuation caused by absorption and band gap effects is obtained as a function of frequency and propagation distance. Well confined acoustic wave propagation inside a line-defect waveguide is further observed experimentally.",

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AU - Hsiao, Fu Li

AU - Khelif, Abdelkrim

AU - Moubchir, Hanane

AU - Choujaa, Abdelkrim

AU - Chen, Chii Chang

AU - Laude, Vincent

PY - 2007/11/8

Y1 - 2007/11/8

N2 - The propagation of acoustic waves in a square-lattice phononic crystal slab consisting of a single layer of spherical steel beads in a solid epoxy matrix is studied experimentally. Waves are excited by an ultrasonic transducer and fully characterized on the slab surface by laser interferometry. A complete band gap is found to extend around 300 kHz, in good agreement with theoretical predictions. The transmission attenuation caused by absorption and band gap effects is obtained as a function of frequency and propagation distance. Well confined acoustic wave propagation inside a line-defect waveguide is further observed experimentally.

AB - The propagation of acoustic waves in a square-lattice phononic crystal slab consisting of a single layer of spherical steel beads in a solid epoxy matrix is studied experimentally. Waves are excited by an ultrasonic transducer and fully characterized on the slab surface by laser interferometry. A complete band gap is found to extend around 300 kHz, in good agreement with theoretical predictions. The transmission attenuation caused by absorption and band gap effects is obtained as a function of frequency and propagation distance. Well confined acoustic wave propagation inside a line-defect waveguide is further observed experimentally.

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Waveguiding inside the complete band gap of a phononic crystal slab

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