{
  "annotation_id": "3cfc0c28-0b5f-4e93-a36d-2dfe71b7b2e6",
  "date_created": "2026-03-02T18:01:14.158000Z",
  "date_modified": "2026-03-02T18:01:14.158000Z",
  "file_hash": "a2a5a7757e96048d27ba401e0d1945d9397fc1b5a9b06830034dcb04b2983bc8",
  "private": false,
  "record": {
    "abstract": "The Bruggeman formalism provides an estimate of the effective permittivity of\na composite material comprising two constituent materials, with each\nconstituent material being composed of electrically small particles. When one\nof the constituent materials is silver and the other is an insulating material,\nthe Bruggeman estimate of the effective permittivity of the composite exhibits\nresonances with respect to volume fraction that are not physically plausible.",
    "arxiv_id": "physics/0611087",
    "authors": [
      "Tom G. Mackay"
    ],
    "categories": [
      "physics.optics"
    ],
    "journal_ref": "Journal of Nanophotonics, Vol. 1, 019501 (2007)",
    "title": "On the effective permittivity of silver-insulator nanocomposites",
    "url": "https://arxiv.org/abs/physics/0611087"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8eaf4951-cac1-4ee3-988e-6413512499f1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}