Nature Communications (Jun 2016)

Floquet topological insulators for sound

  • Romain Fleury,
  • Alexander B Khanikaev,
  • Andrea Alù

DOI
https://doi.org/10.1038/ncomms11744
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 11

Abstract

Read online

One-way sound propagation has been recently proposed in the context of topological acoustics, but is challenged by introducing uniform media motion. Here, Fleury et al.present a practical scheme to achieve topological propagation by modulating in time the acoustic properties of a lattice of resonators, resembling Floquet topological insulators in condensed matter.