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篇目详细内容 |
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【篇名】 |
Remote acoustic cloaks |
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【刊名】 |
Frontiers of Physics (Formerly known as Frontiers of Physics in China) |
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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/s11467-010-0147-y |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2011 |
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【卷期】 |
6
卷1期 |
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【页码】 |
65-69
页,共
5
页 |
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【作者】 |
Qiang SU (苏强);
Bin LIU (刘斌);
Ji-ping HUANG (黄吉平);
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【关键词】 |
cloak; acoustics; finite-element simulations |
【摘要】 |
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Due to the correspondence of the acoustic equations to Maxwell’s equations of one polarization in two dimensions, we exploit theoretically the acoustic counterpart of the recently proposed remote invisibility cloak. The cloak consists of a circular cylindrical core with designed bulk moduli, and an “anti-object” embedded inside a shell with anisotropic mass densities. The material parameters of the cloaking shells are obtained by using the coordinate transformation method. The essence of the new design of cloaks relies on the ability that the cloaked object is no longer deafened by the cloaking shell, which is verified by both the far-field and near-field full-wave finite-element imulations in two dimensions. |
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