{
  "id": "1806.00655",
  "version": "v1",
  "published": "2018-06-02T16:04:20.000Z",
  "updated": "2018-06-02T16:04:20.000Z",
  "title": "Experimental demonstration of topological waveguiding in elastic plates with local resonators",
  "authors": [
    "Rajesh Chaunsali",
    "Chun-Wei Chen",
    "Jinkyu Yang"
  ],
  "comment": "9 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "It is recent that the emergence of topological insulators in condensed matter physics has inspired analogous wave phenomena in mechanical systems, mostly in the setting of discrete lattice models. Here we report a numerical and experimental demonstration of topological waveguiding in a continuum plate. We take a ubiquitous design of a bolted elastic plate and show that such a design allows us to invoke the pseudo-spin Hall effect at remarkably low frequencies. We harness the complex interaction of the bolts and the plate to show the existence of a pair of double Dirac cones near the resonant frequency of the bolt. The manipulation of bolted patterns results in the opening of multiple topological bandgaps, including a complete bandgap that forbids all plate modes. We demonstrate that inside this bandgap, the interface between two topologically distinct zones can guide flexural waves crisply around sharp bends.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-06-02T16:04:20.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "experimental demonstration",
      "local resonators",
      "topological waveguiding",
      "pseudo-spin hall effect",
      "guide flexural waves"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}