{
  "annotation_id": "9d0f85a2-1a72-49ca-8d42-6ba94c5ffa24",
  "date_created": "2026-03-02T18:01:00.684000Z",
  "date_modified": "2026-03-02T18:01:00.684000Z",
  "file_hash": "f410eb07da3e9d339a17aa0f34ed42a1bfd24b8e89fa3933b59ad1faaf23227a",
  "private": false,
  "record": {
    "abstract": "It is demonstrated theoretically that the absorptivity of bulk shear sagittal\nwaves by an ultra-thin layer of viscous fluid between two different elastic\nmedia has a strong maximum (in some cases as good as 100%) at an optimal layer\nthickness. This thickness is usually much smaller than the penetration depths\nand lengths of transverse and longitudinal waves in the fluid. The angular\ndependencies of the absorptivity are demonstrated to have significant and\nunusual structure near critical angles of incidence. The effect of\nnon-Newtonian properties and non-uniformities of the fluid layer on the\nabsorptivity is also investigated. In particular, it is shown that the\nabsorption in a thin layer of viscous fluid is much more sensitive to non-zero\nrelaxation time(s) in the fluid layer than the absorption at an isolated\nsolid-fluid interface.",
    "arxiv_id": "physics/0509030",
    "authors": [
      "Dmitri K. Gramotnev",
      "Melissa L. Mather",
      "Timo A. Nieminen"
    ],
    "categories": [
      "physics.class-ph",
      "physics.gen-ph"
    ],
    "doi": "10.1016/S0041-624X(03)00100-8",
    "journal_ref": "Ultrasonics 41, 197-205 (2003)",
    "title": "Anomalous absorption of bulk shear sagittal acoustic waves in a layered   structure with viscous fluid",
    "url": "https://arxiv.org/abs/physics/0509030"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "30abf176-84a7-4d71-9d20-3c7bfe552f14",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}