{
  "annotation_id": "115fcba8-33dd-4e1d-bc5f-c70d62cd9a8d",
  "date_created": "2026-03-02T18:01:07.949000Z",
  "date_modified": "2026-03-02T18:01:07.949000Z",
  "file_hash": "dc4b2a2f86d8ede5c34a19330f71cb61defdbf460e960369a097394cbc401c43",
  "private": false,
  "record": {
    "abstract": "We study a dynamical model of a rod-like particle surrounded by a cloud of\nsmaller particles of the same charge and we show that, in the presence of a\nlow-frequency alternating electric field, the rod displays the same type of\nanomalous orientation (perpendicular to the field) that was recently observed\nin laboratory colloids. This indicates that the anomalous orientation is due to\nthe collective dynamics of the colloidal particles, and does not require\nelectro-osmotic effects. We also confirm the experimental observation that for\nhigher field frequencies the standard orientation (parallel to the field)\nprevails. In the simulations, these changes are abrupt enough to resemble a\nphase transition.",
    "arxiv_id": "physics/0605081",
    "authors": [
      "Carlo Lancellotti",
      "Bala Sundaram"
    ],
    "categories": [
      "physics.chem-ph",
      "physics.plasm-ph"
    ],
    "title": "Field-induced phases of an orientable charged particle in a dilute   background of point charges",
    "url": "https://arxiv.org/abs/physics/0605081"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cff15dac-e71f-40af-b6a0-8be7cf01d076",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}