{
  "annotation_id": "b6180145-6764-4261-98ba-746934f981a4",
  "date_created": "2026-03-02T18:00:57.387000Z",
  "date_modified": "2026-03-02T18:00:57.387000Z",
  "file_hash": "35d88cf7237d304a7ada696102ca897fe9ab8746f549907877af9b6a71a4b495",
  "private": false,
  "record": {
    "abstract": "We present direct evidence for a reversible phase transition of DNA-linked\ncolloidal gold assemblies. Transmission electron microscopy and optical\nabsorption spectroscopy are used to monitor the colloidal gold phase\ntransition, whose behavior is dominated by DNA interactions. We use\nsingle-stranded DNA-capped colloidal gold that is linked by complementary\nlinker DNA to form the assemblies. We found that, compared to free DNA, a sharp\nmelting transition is observed for the DNA-linked colloidal gold assemblies.\nThe structure of the assemblies is non-crystalline, much like a gel phase,\nconsistent with theoretical predictions. Optical spectra and melting curves\nprovide additional evidence of gelation of the colloidal system. The phase\ntransition and separation are examples of percolation in a dilute solvent.",
    "arxiv_id": "physics/0504061",
    "authors": [
      "Young Sun",
      "Nolan C. Harris",
      "Ching-Hwa Kiang"
    ],
    "categories": [
      "physics.bio-ph",
      "physics.ins-det"
    ],
    "doi": "10.1016/j.physa.2005.02.037",
    "journal_ref": "Physica A, 354 (2005) 1-9.",
    "title": "The Reversible Phase Transition of DNA-Linked Colloidal Gold Assemblies",
    "url": "https://arxiv.org/abs/physics/0504061"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "010a05bd-527a-488e-a96c-6d2f677aa0f6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}