{"paper":{"title":"Super-Resolution Structured-Illumination X-Ray Microscopy based on Fourier Decomposition","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Stepped grating encodes high-frequency X-ray details into multiple low-resolution exposures for recovery via Fourier decomposition.","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Benedikt G\\\"unther, Franz Pfeiffer, Lennart Forster, Martin Dierolf, Stefan Schwaiger","submitted_at":"2026-02-20T16:51:44Z","abstract_excerpt":"X-ray microscopy has become an important tool for non-destructive testing, e.g., in battery research. However, imaging a cm-scale battery cell at the desired (sub-)micrometer resolution has been challenging. State-of-the-art X-ray microscopy techniques with a suited field-of-view provide (sub-) $10\\,\\mu m$ resolution, typically limited by the detector point-spread function and the (effective) detector pixel size. This work presents a super-resolution X-ray microscopy approach overcoming both limitations. It requires a structured X-ray illumination to encode high-frequency sample information th"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We achieve a resolution improvement by a factor of 2.2 for the projection image of a resolution test pattern.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the Fourier-domain superposition created by the stepped grating contains recoverable high-frequency components independent of the detection optics, as asserted in the abstract without quantitative validation of reconstruction fidelity or artifact levels.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A stepped-grating structured-illumination method recovers high-frequency X-ray information via Fourier decomposition to achieve 2.2-fold resolution improvement in projection images and integrates with tomography.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Stepped grating encodes high-frequency X-ray details into multiple low-resolution exposures for recovery via Fourier decomposition.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"5f3246cbe5aeae958389400d9aaf69982e385bd9b5228c18e0a97fc0a568d5ea"},"source":{"id":"2602.18343","kind":"arxiv","version":4},"verdict":{"id":"b0c43c0a-63f6-45e5-890a-aac834834871","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T20:51:51.391111Z","strongest_claim":"We achieve a resolution improvement by a factor of 2.2 for the projection image of a resolution test pattern.","one_line_summary":"A stepped-grating structured-illumination method recovers high-frequency X-ray information via Fourier decomposition to achieve 2.2-fold resolution improvement in projection images and integrates with tomography.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the Fourier-domain superposition created by the stepped grating contains recoverable high-frequency components independent of the detection optics, as asserted in the abstract without quantitative validation of reconstruction fidelity or artifact levels.","pith_extraction_headline":"Stepped grating encodes high-frequency X-ray details into multiple low-resolution exposures for recovery via Fourier decomposition."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2602.18343/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"09a9656dba56e2902e2ad26072c4cf9e184987654f7d1f796147612e77de4d2b"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}