{
  "abstract": "Quantifying three-dimensional (3D) orientation is critical for understanding self-assembly and collective behavior in soft matter and biological systems. Moreover, orientational analysis of anisotropic particles can characterize locally applied forces in fluids. We present a methodology for 3D orientation tomography based on polarization-resolved spectroscopy of lanthanide-doped nanorods exhibiting multiple emission dipoles, enabling 3D orientation measurements from a single viewing angle. We develop a confocal imaging setup optimized for lanthanide luminescence and a theoretical framework to extract both the local director and order parameter in nanorod assemblies. The technique achieves 0.5 μm lateral and 1 μm axial spatial resolution and is demonstrated in dense nematic liquid-crystal assemblies, resolving complex 3D topological structures, and in microfluidic flows, mapping alignment under hydrodynamic shear. This approach provides a versatile platform for quantitative studies of collective orientation, self-assembly mechanics, and alignment induced by external forces, and can be extended to other lanthanide-labeled particles and molecular probes.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Lilian Magermans",
      "orcid": "0009-0009-0778-1093"
    },
    {
      "name": "Marcello Bonetti"
    },
    {
      "name": "Thierry Gacoin"
    },
    {
      "name": "Jongwook Kim",
      "orcid": "0000-0003-0404-6973"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3jvfn3xjvsn6x.bib",
  "cited_by": 0,
  "doi": "10.1038/s41467-026-78323-0",
  "fulltext_url": null,
  "id": "3jvfn3xjvsn6x",
  "issns": [
    "2041-1723"
  ],
  "landing_url": "https://www.nature.com/articles/s41467-026-78323-0",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2504|Liquid Crystal Research Advancements"
    ]
  ],
  "openalex": "W7221753945",
  "pdf_url": "https://www.nature.com/articles/s41467-026-78323-0_reference.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/3jvfn3xjvsn6x.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:38Z",
      "native_id": "10.1038/s41467-026-78323-0",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41467-026-78323-0"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Liquid Crystal Research Advancements",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Orientation tomography of lanthanide-doped nanoprobes by polarization-resolved micro-spectroscopy",
  "title_text": "Orientation tomography of lanthanide-doped nanoprobes by polarization-resolved micro-spectroscopy",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:38Z",
  "url": "https://research.draconitic.com/paper/3jvfn3xjvsn6x",
  "venue": "Nature Communications",
  "versions": []
}