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Fine manipulation of sound via lossy metamaterials with independent and arbitrary reflection amplitude and phase

Author

Listed:
  • Yifan Zhu

    (Nanjing University)

  • Jie Hu

    (Nanjing University
    Nanjing Forest University)

  • Xudong Fan

    (Nanjing University)

  • Jing Yang

    (Nanjing University)

  • Bin Liang

    (Nanjing University)

  • Xuefeng Zhu

    (Huazhong University of Science and Technology)

  • Jianchun Cheng

    (Nanjing University)

Abstract

The fine manipulation of sound fields is critical in acoustics yet is restricted by the coupled amplitude and phase modulations in existing wave-steering metamaterials. Commonly, unavoidable losses make it difficult to control coupling, thereby limiting device performance. Here we show the possibility of tailoring the loss in metamaterials to realize fine control of sound in three-dimensional (3D) space. Quantitative studies on the parameter dependence of reflection amplitude and phase identify quasi-decoupled points in the structural parameter space, allowing arbitrary amplitude-phase combinations for reflected sound. We further demonstrate the significance of our approach for sound manipulation by producing self-bending beams, multifocal focusing, and a single-plane two-dimensional hologram, as well as a multi-plane 3D hologram with quality better than the previous phase-controlled approach. Our work provides a route for harnessing sound via engineering the loss, enabling promising device applications in acoustics and related fields.

Suggested Citation

  • Yifan Zhu & Jie Hu & Xudong Fan & Jing Yang & Bin Liang & Xuefeng Zhu & Jianchun Cheng, 2018. "Fine manipulation of sound via lossy metamaterials with independent and arbitrary reflection amplitude and phase," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04103-0
    DOI: 10.1038/s41467-018-04103-0
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    Cited by:

    1. Dongwoo Lee & Beomseok Oh & Jeonghoon Park & Seong-Won Moon & Kilsoo Shin & Sea-Moon Kim & Junsuk Rho, 2024. "Wide field-of-hearing metalens for aberration-free sound capture," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Yifan Zhu & Liyun Cao & Aurélien Merkel & Shi-Wang Fan & Brice Vincent & Badreddine Assouar, 2021. "Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations," Nature Communications, Nature, vol. 12(1), pages 1-10, December.

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