{
  "abstract": "High-refractive-index nanowires are of interest for signal enhancement in fluorescence-based biosensing. Here, through electromagnetic modelling, we demonstrate substantial fluorescence signal enhancement by incorporating a tapered section into a cylindrical nanowire and investigate two complementary tapering configurations to address practical implementation challenges. Under near-normal excitation, the excitation enhancement increases approximately linearly with taper length, reaching more than three times that of the corresponding non-tapered nanowire at a taper length of 8000 nm. In a non-imaging signal detection scheme using a low numerical aperture (NA), the proposed tapered nanowire achieves more than three orders of magnitude enhancement in fluorescence signal compared with a planar biosensor. Thus, the tapered nanowire should enable efficient fluorescence detection using compact, low-NA optical configuration. In imaging mode, similarly as for non-tapered nanowires, imaging sharpness beyond conventional microscopy limitations is obtained when imaging from the non-tapered nanowire end, while strongly increased excitation enhancement is simultaneously obtained when exciting from the opposite, tapered end.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.35791",
  "author_total": 2,
  "authors": [
    {
      "name": "Farhana Akter Mou"
    },
    {
      "name": "Nicklas Anttu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/69d5vmcjcv1ej.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.35791",
  "fulltext_url": null,
  "id": "69d5vmcjcv1ej",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.35791",
  "language": null,
  "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.optics"
    ],
    [
      "openalex",
      "2204|Plasmonic and Surface Plasmon Research"
    ]
  ],
  "openalex": "W7223843113",
  "pdf_url": "https://arxiv.org/pdf/2610.35791",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/69d5vmcjcv1ej.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.35791",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.35791"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Tapering to Enhance the Performance of Nanowire-Based Fluorescent Biosensors",
  "title_text": "Tapering to Enhance the Performance of Nanowire-Based Fluorescent Biosensors",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/69d5vmcjcv1ej",
  "venue": "arXiv",
  "versions": []
}