Computationally optimized and manufactured acoustic metamaterials
| DWPI Title: Fabricating acoustic metamaterial involves determining at least one tuned physical property for each of multiple micro-resonators with specific desired acoustic property of acoustic metamaterial comprising iteratively tuning at least one tuned physical property for each of multiple micro-resonators |
| Abstract: A method, system, and apparatus for fabricating an acoustic metamaterial is provided. In an embodiment, a method for fabricating an acoustic metamaterial includes determining at least one tuned physical property for each of a plurality of micro-resonators according to a desired acoustic property of the acoustic metamaterial. For a particular physical property, a value of the tuned physical property for at least one of the plurality of micro-resonators is different from a value of the tuned physical property for at least one other of the plurality of micro-resonators. The method also includes additively forming the acoustic metamaterial such that the acoustic metamaterial comprises a first structure and the plurality of micro-resonators embedded within the first structure. Forming the acoustic metamaterial is performed such that an actual physical property of each of the plurality of micro-resonators is equal to a corresponding tuned physical property for each of the plurality of micro-resonators. |
| Use: Method for fabricating acoustic metamaterial. |
| Advantage: The acoustic metamaterial has effective negative dynamic modulus, effective negative dynamic density, effective negative refractive index, and/or an effective imaginary speed of sound, and has desired acoustic property. |
| Novelty: Fabricating acoustic metamaterial involves determining at least one tuned physical property for each of a multiple micro-resonators with specific a desired acoustic property of the acoustic metamaterial comprising iteratively tuning the at least one tuned physical property for each of the multiple micro-resonators, where for a particular physical property, a value of the tuned physical property for at least one of the multiple micro-resonators is different from a value of the tuned physical property for at least one other of the multiple micro-resonators. |
| Filed: 11/30/2018 |
| Application Number: US16206740A |
| Tech ID: SD 14742.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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