{
  "annotation_id": "41a81e35-9afc-4930-9f6d-a21f84b8c080",
  "date_created": "2026-03-02T18:00:50.369000Z",
  "date_modified": "2026-03-02T18:00:50.369000Z",
  "file_hash": "d40fc5392c9b292ee8332679fa37f9ff548fa8b467e8026f6aff7d68b3aa58fd",
  "private": false,
  "record": {
    "abstract": "The use of one or more gold nanoballs as reference objects for Fourier\nTransform holography (FTH) is analysed using experimental soft X-ray\ndiffraction from objects consisting of separated clusters of these balls. The\nholograms are deconvoluted against ball reference objects to invert to images,\nin combination with a Wiener filter to control noise. A resolution of ~30nm,\nsmaller than one ball, is obtained even if a large cluster of balls is used as\nthe reference, giving the best resolution yet obtained by X-ray FTH. Methods of\ndealing with missing data due to a beamstop are discussed. Practical prepared\nobjects which satisfy the FTH condition are suggested, and methods of forming\nthem described.",
    "arxiv_id": "physics/0405036",
    "authors": [
      "H. He",
      "M. Howells",
      "S. Marchesini",
      "H. N. Chapman",
      "U. Weierstall",
      "H. A. Padmore",
      "J. C. H. Spence"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1063/1.1795360",
    "journal_ref": "Applied Physics Letters 85, 2454-2456 (2004)",
    "title": "Use of extended and prepared reference objects in experimental Fourier   transform X-ray holography",
    "url": "https://arxiv.org/abs/physics/0405036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "990a7232-6056-4f82-b431-045634cdfd3a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}