{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:PJLMOC6PG5L2PRS5S42TLVSTWI","short_pith_number":"pith:PJLMOC6P","schema_version":"1.0","canonical_sha256":"7a56c70bcf3757a7c65d973535d653b20fa986b9df8a595d0ed031ebf40f90f3","source":{"kind":"arxiv","id":"1707.04888","version":1},"attestation_state":"computed","paper":{"title":"Background-free 3D nanometric localisation and sub-nm asymmetry detection of single plasmonic nanoparticles by four-wave mixing interferometry with optical vortices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Francesco Masia, George Zoriniants, Naya Giannakopoulou, Paola Borri, Wolfgang Langbein","submitted_at":"2017-07-16T14:29:52Z","abstract_excerpt":"Single nanoparticle tracking using optical microscopy is a powerful technique with many applications in biology, chemistry and material sciences. Despite significant advances, localising objects with nanometric position accuracy in a scattering environment remains challenging. Applied methods to achieve contrast are dominantly fluorescence based, with fundamental limits in the emitted photon fluxes arising from the excited-state lifetime as well as photobleaching. Furthermore, every localisation method reported to date requires signal acquisition from multiple spatial points, with consequent s"},"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":"1707.04888","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-07-16T14:29:52Z","cross_cats_sorted":[],"title_canon_sha256":"e0d8725d62cbccd1092e81bdb91df3fe90618b116f82c4e2b6ccdd0002814b3c","abstract_canon_sha256":"1fe0484062670fab26e65ab8eabc0727520eb646f9975c6e5ed48be62f66fc94"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:40.469515Z","signature_b64":"Jvr8Tjndyb2G8iWLvPZeTOG4yP2Fn0ZRzIVBjn+pYrxcewmD+GXfFJCmIWpL6+ee3OQq9f/+4giEHbhYO6cmDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a56c70bcf3757a7c65d973535d653b20fa986b9df8a595d0ed031ebf40f90f3","last_reissued_at":"2026-05-18T00:31:40.469118Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:40.469118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Background-free 3D nanometric localisation and sub-nm asymmetry detection of single plasmonic nanoparticles by four-wave mixing interferometry with optical vortices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Francesco Masia, George Zoriniants, Naya Giannakopoulou, Paola Borri, Wolfgang Langbein","submitted_at":"2017-07-16T14:29:52Z","abstract_excerpt":"Single nanoparticle tracking using optical microscopy is a powerful technique with many applications in biology, chemistry and material sciences. Despite significant advances, localising objects with nanometric position accuracy in a scattering environment remains challenging. Applied methods to achieve contrast are dominantly fluorescence based, with fundamental limits in the emitted photon fluxes arising from the excited-state lifetime as well as photobleaching. Furthermore, every localisation method reported to date requires signal acquisition from multiple spatial points, with consequent s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.04888","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":""},"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":"1707.04888","created_at":"2026-05-18T00:31:40.469178+00:00"},{"alias_kind":"arxiv_version","alias_value":"1707.04888v1","created_at":"2026-05-18T00:31:40.469178+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.04888","created_at":"2026-05-18T00:31:40.469178+00:00"},{"alias_kind":"pith_short_12","alias_value":"PJLMOC6PG5L2","created_at":"2026-05-18T12:31:37.085036+00:00"},{"alias_kind":"pith_short_16","alias_value":"PJLMOC6PG5L2PRS5","created_at":"2026-05-18T12:31:37.085036+00:00"},{"alias_kind":"pith_short_8","alias_value":"PJLMOC6P","created_at":"2026-05-18T12:31:37.085036+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/PJLMOC6PG5L2PRS5S42TLVSTWI","json":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI.json","graph_json":"https://pith.science/api/pith-number/PJLMOC6PG5L2PRS5S42TLVSTWI/graph.json","events_json":"https://pith.science/api/pith-number/PJLMOC6PG5L2PRS5S42TLVSTWI/events.json","paper":"https://pith.science/paper/PJLMOC6P"},"agent_actions":{"view_html":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI","download_json":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI.json","view_paper":"https://pith.science/paper/PJLMOC6P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1707.04888&json=true","fetch_graph":"https://pith.science/api/pith-number/PJLMOC6PG5L2PRS5S42TLVSTWI/graph.json","fetch_events":"https://pith.science/api/pith-number/PJLMOC6PG5L2PRS5S42TLVSTWI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI/action/storage_attestation","attest_author":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI/action/author_attestation","sign_citation":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI/action/citation_signature","submit_replication":"https://pith.science/pith/PJLMOC6PG5L2PRS5S42TLVSTWI/action/replication_record"}},"created_at":"2026-05-18T00:31:40.469178+00:00","updated_at":"2026-05-18T00:31:40.469178+00:00"}