{
  "abstract": "We analyze the transport of rod-like particles by diffusion and drift in a three-dimensional channel with varying circular or elliptic cross section. Applying the Fick-Jacobs approximation to the transport equation of the particles' probability distribution, we derive an effective one-dimensional substitute model and the associated free energy profile. Our results show that the data for the mean first passage time of rods, once expressed as a function of the effective free energy barrier, collapse onto the same master curve as obtained for point or spherical particles. The observed universality provides a simple framework for predicting transport times of anisotropic particles in confined geometries without resolving the full multidimensional dynamics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.29427",
  "author_total": 4,
  "authors": [
    {
      "name": "N. Ray"
    },
    {
      "name": "A. Semkiv"
    },
    {
      "name": "J. Harting"
    },
    {
      "name": "P. Malgaretti"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3nq3zf6zvee26.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.29427",
  "fulltext_url": null,
  "id": "3nq3zf6zvee26",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.29427",
  "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"
    ],
    [
      "openalex",
      "2204|Nanopore and Nanochannel Transport Studies"
    ]
  ],
  "openalex": "W7214365022",
  "pdf_url": "https://arxiv.org/pdf/2609.29427",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3nq3zf6zvee26.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:11Z",
      "native_id": "2609.29427",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.29427"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.soft",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Diffusion of charged rods across 3D varying section channels",
  "title_text": "Diffusion of charged rods across 3D varying section channels",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:11Z",
  "url": "https://research.draconitic.com/paper/3nq3zf6zvee26",
  "venue": "arXiv",
  "versions": []
}