Trapping sound at corners

Higher-order topological acoustic metamaterials on kagome lattices, which host topologically protected corner states, can confine sound at corners. This may lead to applications of acoustic metamaterials in local acoustic field enhancement, trapping and manipulating of particles, and acoustic sensing and probing.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.

Fig. 1: Second-order topological acoustic metamaterials on a kagome lattice.


  1. 1.

    Pendry, J. B. Phys. Rev. Lett. 85, 3966–3969 (2000).

    CAS  Article  Google Scholar 

  2. 2.

    Benalcazar, W. A., Bernevig, B. A. & Hughes, T. L. Science 357, 61–66 (2017).

    CAS  Article  Google Scholar 

  3. 3.

    Benalcazar, W. A., Bernevig, B. A. & Hughes, T. L. Phys. Rev. B 96, 245115 (2017).

    Article  Google Scholar 

  4. 4.

    Song, Z., Fang, Z. & Fang, C. Phys. Rev. Lett. 119, 246402 (2017).

    Article  Google Scholar 

  5. 5.

    Ezawa, M. Phys. Rev. Lett. 120, 026801 (2018).

    Article  Google Scholar 

  6. 6.

    Serra-Garcia, M. et al. Nature 555, 342–345 (2018).

    CAS  Article  Google Scholar 

  7. 7.

    Peterson, C. W., Benalcazar, W. A., Hughes, T. L. & Bahl, G. Nature 555, 346–350 (2018).

    CAS  Article  Google Scholar 

  8. 8.

    Xue, H., Yang, Y., Gao, F., Chong, Y. & Zhang, B. Nat. Mater. (2018).

  9. 9.

    Ni, X., Weiner, M., Alù, A. & Khanikaev, A. B. Nat. Mater. (2018).

Download references

Author information



Corresponding author

Correspondence to Zhengyou Liu.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Liu, Z. Trapping sound at corners. Nature Mater 18, 98–99 (2019).

Download citation

Further reading