Menger fractal structure with negative refraction and sound tunnelling properties
文献类型：期刊论文
| 作者 | Liu Y(刘宇)1,2; Xu WS(徐文帅)1,2; Chen M(陈猛)1,2 ; Pei DL(裴东亮)1,2; Yang T(杨涛)1,2; Jiang H(姜恒)1,2; Wang YR(王育人)1,2; Chen M(陈猛); Jiang H(姜恒); Wang YR(王育人)
|
| 刊名 | Materials Research Express
 |
| 出版日期 | 2019-10-18 |
| 卷号 | 6期号:11 |
| 关键词 | Menger fractal structure negative refraction acoustic focusing sound tunnelling |
| ISSN号 | 2053-1591 |
| DOI | 10.1088/2053-1591/ab4c57 |
| 英文摘要 | Abstract We construct new quasi-three-dimensional fractal acoustic metamaterials based on adoption of the Menger structure, which offers extraordinary parameters such as double-negative properties and a near-zero density. The resulting metamaterials can thus achieve negative refraction, acoustic focusing and sound tunneling. Using the finite element method and the S-parameter retrieval method, the band structures and the effective parameters of these acoustic metamaterials are researched, respectively. The negative refraction property is numerically simulated using a Gaussian beam passing through a double negative prism. A plate lens with a refractive index of n?=??1 is constructed to achieve acoustic focusing and the sound tunnelling ability is verified using the near-zero-density metamaterial. The results show that the Menger fractal structures have excellent acoustic properties and are promising for acoustic applications. |
| 分类号 | Q3 |
| 语种 | 英语 |
| WOS记录号 | IOP:2053-1591-6-11-AB4C57 |
| 其他责任者 | 陈猛，姜恒 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/80652]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China 2.Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China; |
| 推荐引用方式 GB/T 7714 | Liu Y,Xu WS,Chen M,et al. Menger fractal structure with negative refraction and sound tunnelling properties[J]. Materials Research Express,2019,6(11). |
| APA | 刘宇.,徐文帅.,陈猛.,裴东亮.,杨涛.,...&Liu Y.(2019).Menger fractal structure with negative refraction and sound tunnelling properties.Materials Research Express,6(11). |
| MLA | 刘宇,et al."Menger fractal structure with negative refraction and sound tunnelling properties".Materials Research Express 6.11(2019). |
入库方式： OAI收割
来源：力学研究所
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