{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:NVPK3QC6NOJZU6WTEVF3SSKQ3D","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"04315d8c4dbc550acaac8e09a863e462a8d7e28ec536e906c19cfec2b3624c08","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-07-23T22:21:05Z","title_canon_sha256":"c1d168e47a48f99b99a017a2b7c5c32f19822b09c0153a465d6e2ff38dd26cdb"},"schema_version":"1.0","source":{"id":"1707.07358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07358","created_at":"2026-05-18T00:30:43Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07358v1","created_at":"2026-05-18T00:30:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07358","created_at":"2026-05-18T00:30:43Z"},{"alias_kind":"pith_short_12","alias_value":"NVPK3QC6NOJZ","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"NVPK3QC6NOJZU6WT","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"NVPK3QC6","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:a5ad2f0641aeb3d2d67bdecfb297cc18f2b94b90bd3acb6b01c0337ad1a21c20","target":"graph","created_at":"2026-05-18T00:30:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The resolution of photoacoustic imaging deep inside scattering media is limited by the acoustic diffraction limit. In this work, taking inspiration from super-resolution imaging techniques developed to beat the optical diffraction limit, we demonstrate that the localization of individual optical absorbers can provide super-resolution photoacoustic imaging well beyond the acoustic diffraction limit. As a proof-of-principle experiment, photoacoustic cross-sectional images of microfluidic channels were obtained with a 15 MHz linear CMUT array while absorbing beads were flown through the channels.","authors_text":"Bastien Arnal, Emmanuel Bossy, Sergey Vilov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-07-23T22:21:05Z","title":"Overcoming the acoustic diffraction limit in photoacoustic imaging by localization of flowing absorbers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07358","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a736801aaad0df4fb4c23ea03e342c46b4fee6c2b58baee22c8126d50d1b9530","target":"record","created_at":"2026-05-18T00:30:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"04315d8c4dbc550acaac8e09a863e462a8d7e28ec536e906c19cfec2b3624c08","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-07-23T22:21:05Z","title_canon_sha256":"c1d168e47a48f99b99a017a2b7c5c32f19822b09c0153a465d6e2ff38dd26cdb"},"schema_version":"1.0","source":{"id":"1707.07358","kind":"arxiv","version":1}},"canonical_sha256":"6d5eadc05e6b939a7ad3254bb94950d8e9041208658e5962f51793f075e8e104","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d5eadc05e6b939a7ad3254bb94950d8e9041208658e5962f51793f075e8e104","first_computed_at":"2026-05-18T00:30:43.753421Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:43.753421Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hre2nkbu9rfulwJexpJ4KHOCobLWSpkaB7n33tBSw1OqewkKcE5CkqRxqet5MLfbK2H8z57OjxvFFLzdAYOdDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:43.753818Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.07358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a736801aaad0df4fb4c23ea03e342c46b4fee6c2b58baee22c8126d50d1b9530","sha256:a5ad2f0641aeb3d2d67bdecfb297cc18f2b94b90bd3acb6b01c0337ad1a21c20"],"state_sha256":"d383a62b0ef983f1f633435a497415b9bbde5a463359ee2afde153b71f52c097"}