Bilayer synergetic coupling double negative acoustic metasurface and cloak
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Bilayer synergetic coupling double negative acoustic metasurface and cloak
- 发表刊物：
- Scientific Reports
- 摘要：
- In this paper, we propose a bilayer plate-type lightweight double negative metasurface based on a new synergetic coupling design concept, by which the perfect absorption, double negative bands, free manipulation of phase shifts with a 2π span and acoustic cloak can be successively realized. Firstly, the synergetic behavior between resonant and anti-resonant plates is presented to construct a bilayer unit in which each component respectively provides a pre-defined function in realizing the perfect absorption. Based on this bilayer structure, a double negative band with simultaneously negative effective mass density and bulk modulus is obtained, which, as a metasurface, can obtain continuous phase shifts almost completely covering a 2π range, thus facilitating the design of a threedimensional (3D) acoustic cloak. In addition, based on this strong sound absorption concept, a twodimensional (2D) omnidirectional broadband acoustical dark skin, covering between 800 to 6000 Hz, is also demonstrated through the proposed bilayer plate-type structure form. The proposed design concepts and metasurfaces have widespread potential application values in strong sound attenuation, filtering, superlens, imaging, cloak, and extraordinary wave steering, in which the attributes of strong absorption, double negative parameters or continuous phase shifts with full 2π span are required to realize the expected extraordinary physical features.
- 合写作者：
- Fuyin Ma, Meng Huang, Yicai Xu, and Jiu Hui Wu
- 卷号：
- 8
- 页面范围：
- 5906
- 是否译文：
- 否
- 发表时间：
- 2018-04-12