中国物理B ›› 2026, Vol. 35 ›› Issue (6): 64301-064301.doi: 10.1088/1674-1056/ae2bf0

• • 上一篇    下一篇

Conformal diffusion acoustic metasurfaces with soft materials for scattering reduction

Kunhong Li(李昆鸿), Wenkang Cao(曹文康)†, Qiao Huang(黄桥), Jinsong Ye(叶劲松), Kaiping Nie(聂开萍), and Jie Hu(胡捷)‡   

  1. School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
  • 收稿日期:2025-09-24 修回日期:2025-12-09 接受日期:2025-12-12 发布日期:2026-06-23
  • 通讯作者: Wenkang Cao, Jie Hu E-mail:wkcao@gzu.edu.cn;jiehu@gzu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant Nos. 52305099, 52305249, and 12562014) and the Guizhou Provincial Basic Research Program (Natural Science) (Grant No. MS (2026) 187).

Conformal diffusion acoustic metasurfaces with soft materials for scattering reduction

Kunhong Li(李昆鸿), Wenkang Cao(曹文康)†, Qiao Huang(黄桥), Jinsong Ye(叶劲松), Kaiping Nie(聂开萍), and Jie Hu(胡捷)‡   

  1. School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
  • Received:2025-09-24 Revised:2025-12-09 Accepted:2025-12-12 Published:2026-06-23
  • Contact: Wenkang Cao, Jie Hu E-mail:wkcao@gzu.edu.cn;jiehu@gzu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant Nos. 52305099, 52305249, and 12562014) and the Guizhou Provincial Basic Research Program (Natural Science) (Grant No. MS (2026) 187).

PDF (PC)

2

赞

补充材料

1

摘要： Planar diffusion acoustic metasurfaces (PDAMs) with rigid materials have attracted much attention due to their ability to redistribute acoustic energy in various directions and to realize acoustic stealth. In this paper, to enhance the adaptability of PDAMs to complex curved surfaces, a conformal diffusion acoustic metasurface (CDAM) with soft materials is proposed to manipulate scattering features, leading to considerable scattering reduction in the specular direction. To realize the proposed CDAM, eight kinds of meta-atoms with phase differences of 45$^\circ$ are introduced. Polydimethylsiloxane (PDMS) is chosen as the material of meta-atoms, which not only has a low modulus but also possesses the ability to deform compliantly with environmental conditions. The simulated results demonstrate that the proposed CDAM can achieve backward scattering reduction of at least 9 dB with bending angles of the CDAM from 0$^\circ$ to 90$^\circ$, and has potential applications in noise control, acoustic stealth, architectural acoustics, and other relevant applications.

关键词: conformal diffusion acoustic metasurface, scattering reduction, soft materials, coding metasurface

Abstract: Planar diffusion acoustic metasurfaces (PDAMs) with rigid materials have attracted much attention due to their ability to redistribute acoustic energy in various directions and to realize acoustic stealth. In this paper, to enhance the adaptability of PDAMs to complex curved surfaces, a conformal diffusion acoustic metasurface (CDAM) with soft materials is proposed to manipulate scattering features, leading to considerable scattering reduction in the specular direction. To realize the proposed CDAM, eight kinds of meta-atoms with phase differences of 45$^\circ$ are introduced. Polydimethylsiloxane (PDMS) is chosen as the material of meta-atoms, which not only has a low modulus but also possesses the ability to deform compliantly with environmental conditions. The simulated results demonstrate that the proposed CDAM can achieve backward scattering reduction of at least 9 dB with bending angles of the CDAM from 0$^\circ$ to 90$^\circ$, and has potential applications in noise control, acoustic stealth, architectural acoustics, and other relevant applications.

Key words: conformal diffusion acoustic metasurface, scattering reduction, soft materials, coding metasurface

中图分类号:  (Scattering of acoustic waves)

  • 43.20.Fn
43.20.+g (General linear acoustics) 43.35.+d (Ultrasonics, quantum acoustics, and physical effects of sound)