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Creation of acoustic vortex knots

Author

Listed:
  • Hongkuan Zhang

    (Beijing Institute of Technology)

  • Weixuan Zhang

    (Beijing Institute of Technology)

  • Yunhong Liao

    (Beijing Institute of Technology)

  • Xiaoming Zhou

    (Beijing Institute of Technology)

  • Junfei Li

    (Duke University)

  • Gengkai Hu

    (Beijing Institute of Technology)

  • Xiangdong Zhang

    (Beijing Institute of Technology)

Abstract

Knots and links have been conjectured to play a fundamental role in a wide range of scientific fields. Recently, tying isolated vortex knots in the complex optical field has been realized. However, how to construct the acoustic vortex knot is still an unknown problem. Here we propose theoretically and demonstrate experimentally the creation of acoustic vortex knots using metamaterials, with decoupled modulation of transmitted phase and amplitude. Based on the numerical simulation, we find that the knot function can be embedded into the acoustic field by designed metamaterials with only 24 × 24 pixels. Furthermore, using the optimized metamaterials, the acoustic fields with Hopf link and trefoil knot vortex lines have been observed experimentally.

Suggested Citation

  • Hongkuan Zhang & Weixuan Zhang & Yunhong Liao & Xiaoming Zhou & Junfei Li & Gengkai Hu & Xiangdong Zhang, 2020. "Creation of acoustic vortex knots," Nature Communications, Nature, vol. 11(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17744-x
    DOI: 10.1038/s41467-020-17744-x
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    Cited by:

    1. Ling-Jun Kong & Weixuan Zhang & Peng Li & Xuyue Guo & Jingfeng Zhang & Furong Zhang & Jianlin Zhao & Xiangdong Zhang, 2022. "High capacity topological coding based on nested vortex knots and links," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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