Piezoelectric resonator arrays for tunable acoustic waveguides and metamaterials
One of the outstanding challenges in phononic crystals and acoustic metamaterials development is the ability to tune their performance without requiring structural modifications. We report on the experimental demonstration of a tunable acoustic waveguide implemented within a two-dimensional phononic...
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| Veröffentlicht in: | Journal of applied physics 2012-09, Vol.112 (6) |
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| container_issue | 6 |
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| container_title | Journal of applied physics |
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| creator | Casadei, Filippo Delpero, Tommaso Bergamini, Andrea Ermanni, Paolo Ruzzene, Massimo |
| description | One of the outstanding challenges in phononic crystals and acoustic metamaterials development is the ability to tune their performance without requiring structural modifications. We report on the experimental demonstration of a tunable acoustic waveguide implemented within a two-dimensional phononic plate. The waveguide is equipped with a periodic array of piezoelectric transducers which are shunted through passive inductive circuits. The resonance characteristics of the shunts lead to strong attenuation and to negative group velocities at frequencies defined by the circuits' inductance. The proposed waveguide illustrates the concept of a controllable acoustic logic port or of an acoustic metamaterial with tunable dispersion characteristics. |
| doi_str_mv | 10.1063/1.4752468 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0021-8979 |
| ispartof | Journal of applied physics, 2012-09, Vol.112 (6) |
| issn | 0021-8979 1089-7550 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1323215462 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | Acoustic waveguides Acoustics Arrays Circuits Dispersions Logic Metamaterials Waveguides |
| title | Piezoelectric resonator arrays for tunable acoustic waveguides and metamaterials |
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