{
  "annotation_id": "a833c761-59f0-437d-8d61-3b609d121f78",
  "date_created": "2026-03-02T18:00:36.467000Z",
  "date_modified": "2026-03-02T18:00:36.467000Z",
  "file_hash": "7f698840a3fec048dad2e76543892d2a4157aafe4fae2429844d9a0c70bc1137",
  "private": false,
  "record": {
    "abstract": "We analyze the reflection and transmission coefficients calculated from\ntransfer matrix simulations on finite lenghts of electromagnetic metamaterials,\nto determine the effective permittivity and permeability. We perform this\nanalysis on structures composed of periodic arrangements of wires, split ring\nresonators (SRRs) and both wires and SRRs. We find the recovered\nfrequency-dependent permittivity and permeability are entirely consistent with\nanalytic expressions predicted by effective medium arguments. Of particular\nrelevance are that a wire medium exhibits a frequency region in which the real\npart of permittivity is negative, and SRRs produce a frequency region in which\nthe real part of permeability is negative. In the combination structure, at\nfrequencies where both the recovered real part of permittivity and permeability\nare simultaneously negative, the real part of the index-of-refraction is found\nalso to be unambigously negative.",
    "arxiv_id": "physics/0111203",
    "authors": [
      "D. R. Smith",
      "S. Schultz",
      "P. Markos",
      "C. M. Soukoulis"
    ],
    "categories": [
      "physics.class-ph"
    ],
    "doi": "10.1103/PhysRevB.65.195104",
    "journal_ref": "Phys. Rev. B 65 (2002) 195104",
    "title": "Determination of Effective Permittivity and Permeability of   Metamaterials from Reflection and Transmission Coefficients",
    "url": "https://arxiv.org/abs/physics/0111203"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "859afa85-81a8-4716-97a5-e8e9e66bcb56",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}