摘要
By analogy with the electromagnetic wave, the acoustic transparency phenomenon is analyzed for a multilayered sphere with acoustic metamaterials. The neutral-inclusion concept is used to predict the transparency conditions in the quasistatic case, which are further confirmed by a full-wave analysis. The mechanism of the transparency is based on lowering the total-scattering cross section of the composite sphere. It is found that, to improve the transparency, the angle-dependent scattering cross section must also be minimized for all directions.
| 源语言 | 英语 |
|---|---|
| 文章编号 | 046606 |
| 期刊 | Physical Review E |
| 卷 | 75 |
| 期 | 4 |
| DOI | |
| 出版状态 | 已出版 - 13 4月 2007 |