The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.
Valley Topological Phases in Bilayer Sonic Crystals
Open accessAbstract
Recently, the topological physics in artificial crystals for classical waves has become an emerging research area. In this Letter, we propose a unique bilayer design of sonic crystals that are constructed by two layers of coupled hexagonal array of triangular scatterers. Assisted by the additional layer degree of freedom, a rich topological phase diagram is achieved by simply rotating scatterers in both layers. Under a unified theoretical framework, two kinds of valley-projected topological acoustic insulators are distinguished analytically, i.e., the layer-mixed and layer-polarized topological valley Hall phases, respectively. The theory is evidently confirmed by our numerical and experimental observations of the nontrivial edge states that propagate along the interfaces separating different topological phases. Various applications such as sound communications in integrated devices can be anticipated by the intriguing acoustic edge states enriched by the layer information.
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Cites
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Cited by
Recent advances in 2D, 3D and higher-order topological photonics
Kim, M., Jacob, Z., & Rho, J. (2020) · Light: Science & Applications · doi:10.1038/s41377-020-0331-y · Cited by 470
On-chip valley topological materials for elastic wave manipulation
Yan, M., Lu, J., Li, F., Deng, W., Huang, X., Ma, J., & Liu, Z. (2018) · Nature Materials · doi:10.1038/s41563-018-0191-5 · Cited by 443
Self-citationZhang, X., Xiao, M., Cheng, Y., Lu, M.-H., & Christensen, J. (2018) · Communications Physics · doi:10.1038/s42005-018-0094-4 · Cited by 357
Higher-Order Topological Corner States Induced by Gain and Loss
Luo, X.-W., & Zhang, C. (2019) · Physical Review Letters · doi:10.1103/physrevlett.123.073601 · Cited by 283
Acoustic Metamaterials: A Review of Theories, Structures, Fabrication Approaches, and Applications
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Metadata
- Authors
- Lu, J., Qiu, C., Deng, W., Huang, X., Li, F., Zhang, F., Chen, S., & Liu, Z.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2018-03-15
- Volume
- 120
- Issue
- 11
- Pages
- 116802-116802
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2788759231
- Cited by
- 258
- References
- 62
- FWCI
- 13.44
- Type
- journal article
- Language
- en
- Open access
- green
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- Lu, J., Qiu, C., Deng, W., Huang, X., Li, F., Zhang, F., Chen, S., & Liu, Z. (2018). Valley Topological Phases in Bilayer Sonic Crystals. Physical Review Letters. https://doi.org/10.1103/physrevlett.120.116802
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