A reflective acoustic meta-diffuser based on the coding meta-surface

被引：20
作者：
Cao, Wen Kang [1 ]
Wu, Li Ting [1 ]
Zhang, Cheng [1 ]
Ke, Jun Chen [1 ]
Cheng, Qiang [1 ]
Cui, Tie Jun [1 ]
机构：
[1] Southeast Univ, Dept Radio Engn, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2019年 / 126卷 / 19期
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
PROPAGATION; METASURFACE;
D O I：
10.1063/1.5120111
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The acoustic coding metasurfaces have attracted much attention recently for their unique and flexible control of wavefronts by arranging the binary elements in special sequences with antiphase responses. In this paper, we investigate the application of coding metasurfaces to manipulate the scattering features found under plane-wave illumination. Different coding strategies are considered to realize multibeam generation and construct meta-diffusers that can disperse incoming energy in various directions, leading to considerable suppression of acoustic waves traveling in specular directions. Both simulated and measured results demonstrate the powerful capability of wave manipulation by the coding metasurfaces, offering a new method for noise control in the future. Published under license by AIP Publishing.
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页数：6
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