Observations of symmetry-induced topological mode steering in a reconfigurable elastic plate

K. Tang, M. Makwana, R. V. Craster, and P. Sebbah
Phys. Rev. B 102, 214103 – Published 3 December 2020
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Abstract

We experimentally investigate the valley-Hall effect for interfacial edge states, highlighting the importance of the modal patterns between geometrically distinct regions within a structured elastic plate. These experiments, for vibration, are at a scale where detailed measurements are taken throughout the system and not just at the input/output ports; this exposes the coupling between geometrically distinct modes that underlie the differences between wave transport around gentle and sharp bends.

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  • Received 17 October 2019
  • Accepted 18 November 2020

DOI:https://doi.org/10.1103/PhysRevB.102.214103

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

K. Tang1, M. Makwana2,3, R. V. Craster2,4, and P. Sebbah1,5

  • 1Department of Physics, The Jack and Pearl Resnick Institute for Advanced Technology, Bar Ilan University, Ramat Gan 5290002, Israel
  • 2Department of Mathematics, Imperial College London, London SW7 2AZ, United Kingdom
  • 3Multiwave Technologies AG, 3 Chemin du Prê Fleuri, 1228 Geneva, Switzerland
  • 4Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
  • 5Institut Langevin, ESPCI ParisTech CNRS UMR7587, 1 rue Jussieu, 75238 Paris Cedex 05, France

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Issue

Vol. 102, Iss. 21 — 1 December 2020

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