{
  "annotation_id": "d4336fa3-0c4a-4ddc-b38a-45ff0d65a828",
  "date_created": "2026-03-02T18:01:14.819000Z",
  "date_modified": "2026-03-02T18:01:14.819000Z",
  "file_hash": "443fa3393c5f987b0039714ce5608d9b212a1411d5afc50c0d758db27f3d3ac5",
  "private": false,
  "record": {
    "abstract": "This work is concerned with the experimental demonstration of a dual-band\nnegative index metamaterial. The sample is double-negative (showing both a\nnegative effective permeability and a negative effective permittivity) for\nwavelengths between 799 and 818 nm of linearly polarized light with a real part\nof refractive index of about -1.0 at 813 nm; the ratio -Re(n)/Im(n) is close to\n1.3 at that wavelength. For an orthogonal polarization, the same sample also\nexhibits a negative refractive index in the visible (at 772 nm). The\nspectroscopic measurements of the material are in good agreement with the\nresults obtained from a finite element electromagnetic solver for the actual\ngeometry of the fabricated sample at both polarizations.",
    "arxiv_id": "physics/0612247",
    "authors": [
      "Uday K. Chettiar",
      "Alexander V. Kildishev",
      "Hsiao-Kuan Yuan",
      "Wenshan Cai",
      "Shumin Xiao",
      "Vladimir P. Drachev",
      "Vladimir M. Shalaev"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OL.32.001671",
    "title": "Dual-Band Negative Index Metamaterial: Double-Negative at 813 nm and   Single-Negative at 772 nm",
    "url": "https://arxiv.org/abs/physics/0612247"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b300a530-b740-451a-863d-808a8f348347",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}