Waveguiding inside the complete band gap of a phononic crystal slab

被引：97
作者：
Hsiao, Fu-Li
Khelif, Abdelkrim
Moubchir, Hanane
Choujaa, Abdelkrim
Chen, Chii-Chang
Laude, Vincent
机构：
[1] Univ Franche Comte, CNRS, UMR 6174, Dept LPMO,Inst FEMTO ST, F-25044 Besancon, France
[2] Natl Cent Univ, Dept Opt & Photon, Jhongli 320, Taiwan
来源：
PHYSICAL REVIEW E | 2007年 / 76卷 / 05期
关键词：
D O I：
10.1103/PhysRevE.76.056601
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
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.
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页数：6
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