{
  "annotation_id": "ee6cbe25-78b1-40fb-acac-65b04b2cbddb",
  "date_created": "2026-03-02T18:00:53.417000Z",
  "date_modified": "2026-03-02T18:00:53.417000Z",
  "file_hash": "a76d0e86a19da78ac80a8e2c9a52c23f20a316b0ea3217332579f81377e5865f",
  "private": false,
  "record": {
    "abstract": "Unusual scattering effects from tiny spherical particles may be obtained when\nconcentric shells are designed by pairing together \u0027complementary\u0027\ndouble-negative (DNG), single-negative (SNG), and/or standard double-positive\n(DPS) materials. By embedding these highly polarizable scatterers in a host\nmedium one can achieve a bulk medium with interesting effective parameters.\nSome physical insights and justifications for the anomalous polarizability of\nthese concentric spherical nano-particles and the effective parameters of the\nbulk composite medium are discussed.",
    "arxiv_id": "physics/0410011",
    "authors": [
      "Andrea Alu",
      "Nader Engheta"
    ],
    "categories": [
      "physics.optics",
      "physics.gen-ph"
    ],
    "doi": "10.1063/1.1884757",
    "journal_ref": "J. Appl. Phys. 97, 094310 (2005) (12 pages)",
    "title": "Polarizabilities and Effective Parameters for Collections of Spherical   Nano-Particles Formed by Pairs of Concentric Double-Negative (DNG),   Single-Negative (SNG) and/or Double-Positive (DPS) Metamaterial Layers",
    "url": "https://arxiv.org/abs/physics/0410011"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "05c70b3a-ef0b-48f3-b18a-5f6daa77d270",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}