{
  "annotation_id": "1facdab5-7af1-4b6e-983a-e819d6a4ffad",
  "date_created": "2026-03-02T18:00:42.154000Z",
  "date_modified": "2026-03-02T18:00:42.154000Z",
  "file_hash": "698ecb44eae4af9ee62514014b2528eacebc0f5b5102fd1830030d22557182bf",
  "private": false,
  "record": {
    "abstract": "We demonstrate one-dimensional nuclear magnetic resonance imaging of the\nsemiconductor GaAs with 170 nanometer slice separation and resolve two regions\nof reduced nuclear spin polarization density separated by only 500 nanometers.\nThis is achieved by force detection of the magnetic resonance, Magnetic\nResonance Force Microscopy (MRFM), in combination with optical pumping to\nincrease the nuclear spin polarization. Optical pumping of the GaAs creates\nspin polarization up to 12 times larger than the thermal nuclear spin\npolarization at 5 K and 4 T. The experiment is sensitive to sample volumes\ncontaining $\\sim 4 \\times 10^{11}$ $^{71}$Ga$/\\sqrt{Hz}$. These results\ndemonstrate the ability of force-detected magnetic resonance to apply magnetic\nresonance imaging to semiconductor devices and other nanostructures.",
    "arxiv_id": "physics/0210099",
    "authors": [
      "Kent R. Thurber",
      "Lee E. Harrell",
      "Doran D. Smith"
    ],
    "categories": [
      "physics.ins-det",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1016/S1090-7807(03)00040-5",
    "journal_ref": "J. Mag. Reson. 162, 336 (2003)",
    "title": "170 Nanometer Nuclear Magnetic Resonance Imaging using Magnetic   Resonance Force Microscopy",
    "url": "https://arxiv.org/abs/physics/0210099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b06b21b7-c3ac-44da-a6b2-863dc25a9f64",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}