ArticleProceedings of the National Academy of Sciences of the United States of America2020
Dirac cones and chiral selection of elastic waves in a soft strip.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Chirality-induced phonon spin selectivity by elastic spin-orbit interaction.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Non-destructive mapping of stress and strain in soft thin films through sound waves.Communications physics · 2022Article
- Observation of elastic spin with chiral meta-sources.Nature communications · 2021Article
- Dirac cones and chiral selection of elastic waves in a soft strip.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
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4 authors.
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Abstract
We study the propagation of in-plane elastic waves in a soft thin strip, a specific geometrical and mechanical hybrid framework which we expect to exhibit a Dirac-like cone. We separate the low frequencies guided modes (typically 100 Hz for a 1-cm-wide strip) and obtain experimentally the full dispersion diagram. Dirac cones are evidenced together with other remarkable wave phenomena such as negative wave velocity or pseudo-zero group velocity (ZGV). Our measurements are convincingly supported by a model (and numerical simulation) for both Neumann and Dirichlet boundary conditions. Finally, we perform one-way chiral selection by carefully setting the source position and polarization. Therefore, we show that soft materials support atypical wave-based phenomena, which is all of the more interesting as they make most of the biological tissues.
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