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<p>Controlling the directionality of acoustic scattering with single acoustic meta-atoms has a key importance for reaching spatial sound routing with acoustic metamaterials. In this paper, we present the experimental demonstration of the acoustic analogue of the Kerker effect realized in a two-dimensional coiled-space meta-atom. By engineering the interference between monopolar and dipolar resonances within a meta-atom with a high effective refractive index, we achieve directional scattering with suppressed backward or forward response at the first and second Kerker conditions, respectively. Experimental measurements of the scattered pressure field, in a parallel-plate waveguide environment, show good agreement with the full-wave simulations. Our results validate the feasibility of Kerker-inspired wave control in acoustic systems and open new opportunities for directional sound manipulation.</p>

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Experimental Investigation of Acoustic Kerker Effect in Labyrinthine Resonators

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月14日

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  • I. A. Timankova,
  • M. V. Smagin,
  • M. V. Kuzmin,
  • A. I. Lutovinov,
  • A. A. Bogdanov,
  • Y. Li,
  • M. I. Petrov

摘要

Controlling the directionality of acoustic scattering with single acoustic meta-atoms has a key importance for reaching spatial sound routing with acoustic metamaterials. In this paper, we present the experimental demonstration of the acoustic analogue of the Kerker effect realized in a two-dimensional coiled-space meta-atom. By engineering the interference between monopolar and dipolar resonances within a meta-atom with a high effective refractive index, we achieve directional scattering with suppressed backward or forward response at the first and second Kerker conditions, respectively. Experimental measurements of the scattered pressure field, in a parallel-plate waveguide environment, show good agreement with the full-wave simulations. Our results validate the feasibility of Kerker-inspired wave control in acoustic systems and open new opportunities for directional sound manipulation.