{
  "abstract": "From coating curved parts to creeping lava, thin-film gravitational drainage over complex surfaces can produce abrupt accumulation, usually associated with sharp edges or defects. Here, experiments, simulations and asymptotics show that a smooth saddle alone generates a logarithmically singular ridge, regularized within a dynamic region where drainage balances hydrostatic pressure and capillarity. In a Newtonian lubrication picture, this mechanism can inform redistribution in manufacturing and geophysics, motivating extensions to complex rheology and interacting geometric features.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. Lett. 137, 164002 (2026)",
  "arxiv": "2606.11881",
  "author_total": 4,
  "authors": [
    {
      "name": "Simeon Djambov"
    },
    {
      "name": "Alice Marcotte"
    },
    {
      "name": "François Gallaire"
    },
    {
      "name": "Pier Giuseppe Ledda"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3agyf9zh8zw6j.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.11881",
  "fulltext_url": null,
  "id": "3agyf9zh8zw6j",
  "issns": [
    "0031-9007",
    "1079-7114"
  ],
  "landing_url": "https://arxiv.org/abs/2606.11881",
  "language": "en",
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.flu-dyn"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.phys"
    ],
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      "hal",
      "2.phys.phys.phys-flu-dyn"
    ]
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  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.11881",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": "American Physical Society",
  "ris": "https://research.draconitic.com/paper/3agyf9zh8zw6j.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2606.11881",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.11881"
    },
    {
      "first_seen": "2026-11-04T12:20:53Z",
      "native_id": "hal-05850627",
      "source": "hal",
      "url": "https://hal.science/hal-05850627v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.flu-dyn",
      "subfield": "fluid-dynamics"
    }
  ],
  "title": "Thin-film drainage becomes singular at saddles",
  "title_text": "Thin-film drainage becomes singular at saddles",
  "type": "preprint",
  "updated_at": "2026-11-05T12:20:13Z",
  "url": "https://research.draconitic.com/paper/3agyf9zh8zw6j",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/6dfx-zb87",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}