{
  "abstract": "Fast pixelated detectors are driving 4D-STEM toward microsecond dwell times, a regime in which the finite response of the scan deflection coils becomes comparable to the dwell time itself. Using direct probe imaging and sub-frame diffraction analysis, we document a significant intra-dwell scan-coil delay that systematically smears the recorded signal anisotropically along the fast scan direction, with a settling timescale of several tens of microseconds. We present a phase-correlation-based sub-frame alignment procedure that measures and corrects this smearing, and we assess its impact on focused and defocused 4D-STEM reconstructions over a range of scan step sizes. The correction restores signal across a broad range of spatial frequencies, with the largest gains at the large step sizes required for low-dose biological imaging. Because it operates on existing data with no modification to the microscope, the method offers a practical route to recovering signal that would otherwise be lost to scan-coil delay.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.13106",
  "author_total": 7,
  "authors": [
    {
      "name": "Vishal Kumar"
    },
    {
      "name": "Andreas Jehle"
    },
    {
      "name": "Tizian Lorenzen"
    },
    {
      "name": "Julika Radecke"
    },
    {
      "name": "Knut Müller-Caspary"
    },
    {
      "name": "Massimo Kube"
    },
    {
      "name": "Henning Stahlberg"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3gt9svbw2yfcx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.13106",
  "fulltext_url": null,
  "id": "3gt9svbw2yfcx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.13106",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.bio-ph"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
      "arxiv",
      "physics.med-ph"
    ],
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "arxiv",
      "q-bio.QM"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2608.13106",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3gt9svbw2yfcx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:31Z",
      "native_id": "2608.13106",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.13106"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "arxiv:q-bio.QM",
      "subfield": "bioinformatics"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.bio-ph",
      "subfield": "biological-medical"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Scan-Coil Delay Causes Anisotropic Signal Loss in Fast 4D-STEM",
  "title_text": "Scan-Coil Delay Causes Anisotropic Signal Loss in Fast 4D-STEM",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:36Z",
  "url": "https://research.draconitic.com/paper/3gt9svbw2yfcx",
  "venue": "arXiv",
  "versions": []
}