{
  "annotation_id": "5a6608b4-f879-4ab1-a55d-619d58f23430",
  "date_created": "2026-03-02T18:00:56.814000Z",
  "date_modified": "2026-03-02T18:00:56.814000Z",
  "file_hash": "6331a9ea0c1cd629d0cdde10ac6a901fb9e6522a036a71288b4d3205a9c25e57",
  "private": false,
  "record": {
    "abstract": "We report a nanofabricated medium made of electromagnetically coupled pairs\nof gold dots with geometry carefully designed at a 10-nm level. The medium\nexhibits strong magnetic response at visible-light frequencies, including bands\nwith negative \\mu. The magnetism arises due to the excitation of quadrupole\nplasmon resonances. Our approach shows for the first time the feasibility of\nmagnetism at optical frequencies and paves a way towards magnetic and\nleft-handed components for visible optics.",
    "arxiv_id": "physics/0504178",
    "authors": [
      "A. N. Grigorenko",
      "H. F. Gleeson",
      "Y. Zhang",
      "A. A. Firsov",
      "I. Y. Khrushchev",
      "J. Petrovic"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1038/nature04242",
    "journal_ref": "Nature 438, 335-338 (2005)",
    "title": "Nanofabricated media with negative permeability at visible frequencies",
    "url": "https://arxiv.org/abs/physics/0504178"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6f913c36-ccca-4594-bade-1078bcca0505",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}