The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.
Acoustic topological insulator and robust one-way sound transport
Open accessAbstract
The acoustic analogue of a topological insulator is shown: a metamaterial exhibiting one-way sound transport along its edge. The system — a graphene-like array of stainless-steel rods — is a promising new platform for exploring topological phenomena. Topological design of materials enables topological symmetries and facilitates unique backscattering-immune wave transport1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26. In airborne acoustics, however, the intrinsic longitudinal nature of sound polarization makes the use of the conventional spin–orbital interaction mechanism impossible for achieving band inversion. The topological gauge flux is then typically introduced with a moving background in theoretical models19,20,21,22. Its practical implementation is a serious challenge, though, due to inherent dynamic instabilities and noise. Here we realize the inversion of acoustic energy bands at a double Dirac cone15,27,28 and provide an experimental demonstration of an acoustic topological insulator. By manipulating the hopping interaction of neighbouring ’atoms’ in this new topological material, we successfully demonstrate the acoustic quantum spin Hall effect, characterized by robust pseudospin-dependent one-way edge sound transport. Our results are promising for the exploration of new routes for experimentally studying topological phenomena and related applications, for example, sound-noise reduction.
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Cites
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Cited by
Ozawa, T., Price, H. M., Amo, A., Goldman, N., Hafezi, M., Lu, L., Rechtsman, M. C., Schuster, D., Simon, J., Zilberberg, O., et al. (2019) · Reviews of Modern Physics · doi:10.1103/revmodphys.91.015006 · Cited by 3,722
Topological phases in acoustic and mechanical systems
Ma, G., Xiao, M., & Chan, C. T. (2019) · Nature Reviews Physics · doi:10.1038/s42254-019-0030-x · Cited by 830
A silicon-on-insulator slab for topological valley transport
He, X.-T., Liang, E.-T., Yuan, J.-J., Qiu, H.-Y., Chen, X.-D., Zhao, F.-L., & Dong, J.-W. (2019) · Nature Communications · doi:10.1038/s41467-019-08881-z · Cited by 631
Xie, B.-Y., Su, G.-X., Wang, H.-F., Su, H., Shen, X.-P., Zhan, P., Lu, M.-H., Wang, Z.-L., & Chen, Y.-F. (2019) · Physical Review Letters · doi:10.1103/physrevlett.122.233903 · Cited by 594
Self-citationXie, B., Wang, H.-X., Zhang, X., Zhan, P., Jiang, J.-H., Lu, M., & Chen, Y. (2021) · Nature Reviews Physics · doi:10.1038/s42254-021-00323-4 · Cited by 543
Self-citation
Metadata
- Authors
- He, C., Ni, X., Ge, H., Sun, X.-C., Chen, Y.-B., Lu, M.-H., Liu, X.-P., & Chen, Y.-F.
- Venue
- Nature Physics
- Published
- 2016-08-29
- Volume
- 12
- Issue
- 12
- Pages
- 1124-1129
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W2261254959
- Cited by
- 1,211
- References
- 13
- FWCI
- 49.53
- Type
- journal article
- Language
- en
- Open access
- bronze
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