{
  "annotation_id": "e8615ce2-5f0d-4d7a-944f-e19969f503aa",
  "date_created": "2026-03-02T18:01:32.180000Z",
  "date_modified": "2026-03-02T18:01:32.180000Z",
  "file_hash": "e120c0f91f35c681eaec5b8f6987808b9dee5bc4ddd315ac3c1441c36ef96cf3",
  "private": false,
  "record": {
    "abstract": "Microelectromagnet devices, a ring trap and a matrix, were developed for the\nmicroscopic control of biological systems. The ring trap is a circular Au wire\nwith an insulator on top. The matrix has two arrays of straight Au wires, one\narray perpendicular to the other, that are separated and topped by insulating\nlayers. Microelectromagnets can produce strong magnetic fields to stably\nmanipulate magnetically tagged biological systems in a fluid. Moreover, by\ncontrolling the currents flowing through the wires, a microelectromagnet matrix\ncan move a peak in the magnetic field magnitude continuously over the surface\nof the device, generate multiple peaks simultaneously and control them\nindependently. These capabilities of a matrix can be used to trap, continuously\ntransport, assemble, separate and sort biological samples on micrometer length\nscales. Combining microelectromagnets with microfluidic systems, chip-based\nexperimental systems can be realized for novel applications in biological and\nbiomedical studies.",
    "arxiv_id": "q-bio/0402024",
    "authors": [
      "H. Lee",
      "A. M. Purdon",
      "R. M. Westervelt"
    ],
    "categories": [
      "q-bio.QM"
    ],
    "title": "Microelectromagnets for the manipulation of biological systems",
    "url": "https://arxiv.org/abs/q-bio/0402024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e4ab6db2-f804-47c7-8cf8-16d06a0e0471",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}