| Autor: |
Li-Yang Zheng, Ying Wu, Xiao-Liu Zhang, Xu Ni, Ze-Guo Chen, Ming-Hui Lu, Yan-Feng Chen |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
AIP Advances, Vol 3, Iss 10, Pp 102122-102122-7 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
2158-3226 |
| DOI: |
10.1063/1.4826610 |
| Popis: |
We present a design for a two-dimensional omnidirectional acoustic absorber that can achieve 98.6% absorption of acoustic waves in water, forming an effective acoustic black hole. This artificial black hole consists of an absorptive core coated with layers of periodically distributed polymer cylinders embedded in water. Effective medium theory describes the response of the coating layers to the acoustic waves. The polymer parameters can be adjusted, allowing practical fabrication of the absorber. Since the proposed structure does not rely on resonances, it is applicable to broad bandwidths. The design might be extended to a variety of applications. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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