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

光電科學與工程學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

106 引文斯高帕斯（Scopus）

摘要

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.

原文	???core.languages.en_GB???
文章編號	056601
期刊	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
卷	76
發行號	5
DOIs	https://doi.org/10.1103/PhysRevE.76.056601
出版狀態	已出版 - 8 11月 2007

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10.1103/PhysRevE.76.056601

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AU - Chen, Chii Chang

AU - Laude, Vincent

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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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