{
  "abstract": "Many microgravity experiments require centimeter-sized spherical liquid drops. In drop-tower experiments, only a few seconds of microgravity are available, so the drops must be generated and reach a nearly relaxed state within a very short time. We investigate capillary auto-ejection (puddle jumping) as a passive mechanism for producing free-floating drops and investigate how the supporting cavity can be shaped to minimize the relaxation time after ejection. For cavities with a parabolic cross-section filled with a fixed liquid volume, minimization of the initial liquid surface area yields a unique shape, and smoothed particle hydrodynamics simulations show that this shape also gives the shortest relaxation time within the parabolic family. Introducing a shallow central depression into the cavity reduces the relaxation time further, despite producing a larger initial liquid surface area. These results provide design principles for capillary-driven drop generators that enable the rapid production of relaxed centimeter-sized drops during the short microgravity intervals available in drop towers.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.01857",
  "author_total": 5,
  "authors": [
    {
      "name": "Patric Mueller"
    },
    {
      "name": "Kai Ihrig"
    },
    {
      "name": "Achim Sack"
    },
    {
      "name": "Jonathan E. Kollmer"
    },
    {
      "name": "Thorsten Poeschel"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8g0ry0s6f6h82.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.01857",
  "fulltext_url": null,
  "id": "8g0ry0s6f6h82",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.01857",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.soft"
    ],
    [
      "arxiv",
      "physics.flu-dyn"
    ],
    [
      "openalex",
      "2206|Fluid Dynamics and Heat Transfer"
    ]
  ],
  "openalex": "W7215909553",
  "pdf_url": "https://arxiv.org/pdf/2610.01857",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8g0ry0s6f6h82.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:03Z",
      "native_id": "2610.01857",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.01857"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.soft",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.flu-dyn",
      "subfield": "fluid-dynamics"
    }
  ],
  "title": "Rapid generation of relaxed centimeter-sized drops by capillary auto-ejection",
  "title_text": "Rapid generation of relaxed centimeter-sized drops by capillary auto-ejection",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:03Z",
  "url": "https://research.draconitic.com/paper/8g0ry0s6f6h82",
  "venue": "arXiv",
  "versions": []
}