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- W2116786759 abstract "The tunable and the engineering possibilities of waveguides in periodic arrays made of rigid square-rod scatterers are theoretically and experimentally reported in this work. Due to the square shape of the scatterers, the control of their orientation with respect to the direction of the incident wave can be used for moulding the propagating acoustic waves inside the periodic structure. On the one hand, the plane wave expansion with supercell approximation is used to obtain the band structure of the periodic system. On the other hand, the scattering of waves in finite periodic arrays is analysed using the finite elements method. Experimentally, a prototype made of rigid square-rod scatterers is used to validate the theoretical predictions. A spatial-frequency filter and some applications in waveguiding for audible sound are discussed in this work. Good agreement between theory and experiments and the high tunability of the system are demonstrated. (Some figures may appear in colour only in the online journal)" @default.
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- W2116786759 date "2013-07-05" @default.
- W2116786759 modified "2023-09-27" @default.
- W2116786759 title "Tunable acoustic waveguides in periodic arrays made of rigid square-rod scatterers: theory and experimental realization" @default.
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- W2116786759 doi "https://doi.org/10.1088/0022-3727/46/30/305108" @default.
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