Topological guiding of elastic waves in phononic metamaterials based on 2D pentamode structures

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2017
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Scientific Reports. 2017, 7(1), 18043. eISSN 2045-2322. Available under: doi: 10.1038/s41598-017-18394-8
Zusammenfassung

A topological state with protected propagation of elastic waves is achieved by appropriately engineering a phononic metamaterial based on 2D pentamode structures in silicon. Gapless edge states in the designed structure, which are characterized by pseudospin-dependent transport, provide backscattering-immune propagation of the elastic wave along bend paths. The role of the states responsible for forward and backward transfer can be interchanged by design.

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530 Physik
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Topological states, Elastic waves, Pentamode structures
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ISO 690GUO, Yuning, Thomas DEKORSY, Mike HETTICH, 2017. Topological guiding of elastic waves in phononic metamaterials based on 2D pentamode structures. In: Scientific Reports. 2017, 7(1), 18043. eISSN 2045-2322. Available under: doi: 10.1038/s41598-017-18394-8
BibTex
@article{Guo2017-12-22Topol-41048,
  year={2017},
  doi={10.1038/s41598-017-18394-8},
  title={Topological guiding of elastic waves in phononic metamaterials based on 2D pentamode structures},
  number={1},
  volume={7},
  journal={Scientific Reports},
  author={Guo, Yuning and Dekorsy, Thomas and Hettich, Mike},
  note={Article Number: 18043}
}
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