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篇目详细内容 |
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【篇名】 |
Enhanced scattering of acoustic waves at interfaces |
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【刊名】 |
Frontiers of Physics |
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【刊名缩写】 |
Front. Phys |
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【ISSN】 |
2095-0462 |
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【EISSN】 |
2095-0470 |
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【DOI】 |
10.1007/s11467-011-0191-2 |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2012 |
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【卷期】 |
7
卷3期 |
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【页码】 |
319-323
页,共
5
页 |
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【作者】 |
Li Zhao (赵;
瓅;
);
Bin Liu (刘;
斌;
);
Yin-hao Gao (高;
银;
浩;
);
Yan-jiao
Zhao (赵;
艳;
皎;
);
Ji-ping
Huang (黄;
吉;
平;
);
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【关键词】 |
superscattering; acoustic waves; finite element simulations |
【摘要】 |
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We propose a general method to realize a total scattering of an incident acoustic wave at interfaces between different media while allowing the flow of air, fluids and/or particles. This originates from the enlargement of the equivalent acoustic scattering cross section of an embedded object coated with acoustic metamaterials, which causes the coated object to behave as a scatterer bigger than its physical size. We theoretically design a model circular cylindrical object coated with such metamaterials whose properties are determined according to two different, but identical, methods. The desired function is confirmed for both far-field and near-field cases with full wave simulations based on the finite element method. This work reveals a promising way to achieve noise shielding and naval camouflage. |
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