{
  "annotation_id": "a887ebe3-3277-4dc1-a48d-652562666276",
  "date_created": "2026-03-02T18:01:00.640000Z",
  "date_modified": "2026-03-02T18:01:00.640000Z",
  "file_hash": "fb3b6a05d5aa7c15b147e31c2fe634dc4fae1b480b7f872d78881e2f0968fee4",
  "private": false,
  "record": {
    "abstract": "We report on what we believe is the first demonstration of an optically\nactivated cantilever due to photomechanical effects in a dye-doped polymer\noptical fiber. The fiber is observed to bend when light is launched off-axis.\nThe displacement angle monotonically increases as a function of the distance\nbetween the illumination point and the fiber axis, and is consistent with\ndifferential light-induced length changes. The photothermal and\nphoto-reorientation mechanisms, each with its own distinct response time, are\nproposed to explain the observed time dependence. The measured degree of\nbending is consistent with a model that we have proposed which includes\ncoupling between photoisomerization and heating. Most importantly, we have\ndiscovered that at high light intensity, a cooperative release of stress\nresults in cis-to-trans isomerization that yields a large and abrupt length\nchange.",
    "arxiv_id": "physics/0508004",
    "authors": [
      "Shaoping Bian",
      "Dirk Robinson",
      "Mark G. Kuzyk"
    ],
    "categories": [
      "physics.optics",
      "physics.gen-ph"
    ],
    "doi": "10.1364/JOSAB.23.000697",
    "journal_ref": "J. Opt. Soc. Am B, 23, 697 (2006)",
    "title": "An optically activated cantilever using photomechanical effects in   dye-doped polymer fibers",
    "url": "https://arxiv.org/abs/physics/0508004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5c270e91-8c94-461c-884e-8a659ed38f35",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}