{
  "annotation_id": "776e0c52-c455-4403-a11f-8a8c40bd2d1c",
  "date_created": "2026-03-02T18:01:03.281000Z",
  "date_modified": "2026-03-02T18:01:03.281000Z",
  "file_hash": "0a4e86b317d54941fd47612641498829447df3376b50a8cb06032b408be2f2bd",
  "private": false,
  "record": {
    "abstract": "The adsorption of two kinds of porphyrin (Cu-TBPP) and perylene (PTCDA)\nderived organic molecules deposited on KBr and Al2O3 surfaces has been studied\nby non-contact force microscopy in ultra-high vacuum, our goal being the\nassembly of ordered molecular arrangements on insulating surfaces at room\ntemperature. On a Cu(100) surface, well ordered islands of Cu-TBPP molecules\nwere successfully imaged. On KBr and Al2O3 surfaces, it was found that the same\nmolecules aggregate in small clusters at step edges, rather than forming\nordered monolayers. First measurements with PTCDA on KBr show that\nnanometre-scale rectangular pits in the surface can act as traps to confine\nsmall molecular assemblies.",
    "arxiv_id": "physics/0511150",
    "authors": [
      "Laurent Nony",
      "Roland Prof. Bennewitz",
      "Oliver Dr. Pfeiffer",
      "Enrico Dr. Gnecco",
      "Alexis Prof. Baratoff",
      "Ernst Prof. Meyer",
      "Toyoaki Eguchi",
      "Andr\u00e9 Gourdon",
      "Chrisitan Joachim"
    ],
    "categories": [
      "physics.atm-clus"
    ],
    "doi": "10.1088/0957-4484/15/2/019",
    "journal_ref": "Nanotechnology 15 (2004) S91-S96",
    "title": "Cu-TBPP and PTCDA molecules on insulating surfaces studied by   ultra-high-vacuum non-contact AFM",
    "url": "https://arxiv.org/abs/physics/0511150"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "383fc5c5-4546-4b0d-b497-b83622bf04a2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}