{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:I6L73HM4PH23BZLMGZRRBX6EBZ","short_pith_number":"pith:I6L73HM4","schema_version":"1.0","canonical_sha256":"4797fd9d9c79f5b0e56c366310dfc40e4351f443f3fb728b599875234d90f387","source":{"kind":"arxiv","id":"2001.09867","version":1},"attestation_state":"computed","paper":{"title":"Photonic crystal fiber for high resolution lensless in-line holographic microscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV"],"primary_cat":"physics.optics","authors_text":"Manjunatha Mahadevappa, Pranab K. Dutta, Sanjeev Kumar","submitted_at":"2020-01-27T15:45:20Z","abstract_excerpt":"We propose to use high numerical aperture single mode optical fibers like photonic crystal fiber for lensless in-line holographic microscopy. Highly divergent beam helps to overcome the spatial sampling limitation of the image sensor. In this paper, a submicron lateral resolution has been demonstrated, with an imaging sensor of pixel pitch 1.12 micrometer and a photonic crystal fiber of mode field diameter 1.8 micrometer. In earlier methods of single-shot lensless imaging, submicron resolution has been obtained at very small working distance and field of view. The proposed method improves the "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2001.09867","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-01-27T15:45:20Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"9efecc1a31b57831708837404df858aaf89ac97b4fa491be52162e4ec378e425","abstract_canon_sha256":"7a8d2121a6d7f2d5e6dd13fac6598152f9515126a37634290a3be1f18d3955e2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:14:36.320713Z","signature_b64":"9Vk/9PhSIqlu0xLdYjvpbDLFOUK03TWcCEeQs3uAzoK3uqGLDYJeaHhkufjr0SpZ5VGIOuFTmSGlrDjX/yjZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4797fd9d9c79f5b0e56c366310dfc40e4351f443f3fb728b599875234d90f387","last_reissued_at":"2026-07-05T01:14:36.320184Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:14:36.320184Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Photonic crystal fiber for high resolution lensless in-line holographic microscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV"],"primary_cat":"physics.optics","authors_text":"Manjunatha Mahadevappa, Pranab K. Dutta, Sanjeev Kumar","submitted_at":"2020-01-27T15:45:20Z","abstract_excerpt":"We propose to use high numerical aperture single mode optical fibers like photonic crystal fiber for lensless in-line holographic microscopy. Highly divergent beam helps to overcome the spatial sampling limitation of the image sensor. In this paper, a submicron lateral resolution has been demonstrated, with an imaging sensor of pixel pitch 1.12 micrometer and a photonic crystal fiber of mode field diameter 1.8 micrometer. In earlier methods of single-shot lensless imaging, submicron resolution has been obtained at very small working distance and field of view. The proposed method improves the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.09867","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2001.09867/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":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2001.09867","created_at":"2026-07-05T01:14:36.320250+00:00"},{"alias_kind":"arxiv_version","alias_value":"2001.09867v1","created_at":"2026-07-05T01:14:36.320250+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.09867","created_at":"2026-07-05T01:14:36.320250+00:00"},{"alias_kind":"pith_short_12","alias_value":"I6L73HM4PH23","created_at":"2026-07-05T01:14:36.320250+00:00"},{"alias_kind":"pith_short_16","alias_value":"I6L73HM4PH23BZLM","created_at":"2026-07-05T01:14:36.320250+00:00"},{"alias_kind":"pith_short_8","alias_value":"I6L73HM4","created_at":"2026-07-05T01:14:36.320250+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ","json":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ.json","graph_json":"https://pith.science/api/pith-number/I6L73HM4PH23BZLMGZRRBX6EBZ/graph.json","events_json":"https://pith.science/api/pith-number/I6L73HM4PH23BZLMGZRRBX6EBZ/events.json","paper":"https://pith.science/paper/I6L73HM4"},"agent_actions":{"view_html":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ","download_json":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ.json","view_paper":"https://pith.science/paper/I6L73HM4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2001.09867&json=true","fetch_graph":"https://pith.science/api/pith-number/I6L73HM4PH23BZLMGZRRBX6EBZ/graph.json","fetch_events":"https://pith.science/api/pith-number/I6L73HM4PH23BZLMGZRRBX6EBZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ/action/storage_attestation","attest_author":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ/action/author_attestation","sign_citation":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ/action/citation_signature","submit_replication":"https://pith.science/pith/I6L73HM4PH23BZLMGZRRBX6EBZ/action/replication_record"}},"created_at":"2026-07-05T01:14:36.320250+00:00","updated_at":"2026-07-05T01:14:36.320250+00:00"}