{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:Y47NVMTFEGNIPGGISDSGMWV6R4","short_pith_number":"pith:Y47NVMTF","schema_version":"1.0","canonical_sha256":"c73edab265219a8798c890e4665abe8f03da865b0c171296436cd83b010b32e0","source":{"kind":"arxiv","id":"2508.01053","version":3},"attestation_state":"computed","paper":{"title":"Capillary currents and viscous droplet spreading","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"David Darrow, John W. M. Bush, Lucas Warwaruk","submitted_at":"2025-08-01T20:10:22Z","abstract_excerpt":"We present the results of a combined experimental and theoretical study of the spreading of viscous droplets over rigid substrates. First, we experimentally investigate the wetting of a roughened glass surface by a viscous droplet of silicone oil, wide and shallow relative to the capillary length $\\ell_c$. The horizontal radius of the droplet grows according to an $R_\\mathrm{drop}\\sim t^{1/8}$ scaling reminiscent of viscous gravity currents (Lopez et al. 1976). The droplet is preceded by a mesoscopic fluid film that percolates through the rough substrate, its radius increasing according to $R_"},"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":"2508.01053","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-08-01T20:10:22Z","cross_cats_sorted":[],"title_canon_sha256":"232c0cc39f32542883b4dff6dc70aaf2564981a616c7af6eb7d9a59434aed5b4","abstract_canon_sha256":"4807b65df4350785f52467da77d131e7424d4d4f3fa32ac6ad74cb1f7322087e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-10T14:10:43.606828Z","signature_b64":"ZIOpD2w2Kj30Cu3TdJNPks8h2TyWWR75rNwLSINzaaJ04KROmu4TQfyALuo6b6jtU09pCd9wM1sT3EtVZXxcBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c73edab265219a8798c890e4665abe8f03da865b0c171296436cd83b010b32e0","last_reissued_at":"2026-06-10T14:10:43.605620Z","signature_status":"signed_v1","first_computed_at":"2026-06-10T14:10:43.605620Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Capillary currents and viscous droplet spreading","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"David Darrow, John W. M. Bush, Lucas Warwaruk","submitted_at":"2025-08-01T20:10:22Z","abstract_excerpt":"We present the results of a combined experimental and theoretical study of the spreading of viscous droplets over rigid substrates. First, we experimentally investigate the wetting of a roughened glass surface by a viscous droplet of silicone oil, wide and shallow relative to the capillary length $\\ell_c$. The horizontal radius of the droplet grows according to an $R_\\mathrm{drop}\\sim t^{1/8}$ scaling reminiscent of viscous gravity currents (Lopez et al. 1976). The droplet is preceded by a mesoscopic fluid film that percolates through the rough substrate, its radius increasing according to $R_"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.01053","kind":"arxiv","version":3},"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/2508.01053/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":"2508.01053","created_at":"2026-06-10T14:10:43.605790+00:00"},{"alias_kind":"arxiv_version","alias_value":"2508.01053v3","created_at":"2026-06-10T14:10:43.605790+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.01053","created_at":"2026-06-10T14:10:43.605790+00:00"},{"alias_kind":"pith_short_12","alias_value":"Y47NVMTFEGNI","created_at":"2026-06-10T14:10:43.605790+00:00"},{"alias_kind":"pith_short_16","alias_value":"Y47NVMTFEGNIPGGI","created_at":"2026-06-10T14:10:43.605790+00:00"},{"alias_kind":"pith_short_8","alias_value":"Y47NVMTF","created_at":"2026-06-10T14:10:43.605790+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/Y47NVMTFEGNIPGGISDSGMWV6R4","json":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4.json","graph_json":"https://pith.science/api/pith-number/Y47NVMTFEGNIPGGISDSGMWV6R4/graph.json","events_json":"https://pith.science/api/pith-number/Y47NVMTFEGNIPGGISDSGMWV6R4/events.json","paper":"https://pith.science/paper/Y47NVMTF"},"agent_actions":{"view_html":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4","download_json":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4.json","view_paper":"https://pith.science/paper/Y47NVMTF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2508.01053&json=true","fetch_graph":"https://pith.science/api/pith-number/Y47NVMTFEGNIPGGISDSGMWV6R4/graph.json","fetch_events":"https://pith.science/api/pith-number/Y47NVMTFEGNIPGGISDSGMWV6R4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4/action/storage_attestation","attest_author":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4/action/author_attestation","sign_citation":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4/action/citation_signature","submit_replication":"https://pith.science/pith/Y47NVMTFEGNIPGGISDSGMWV6R4/action/replication_record"}},"created_at":"2026-06-10T14:10:43.605790+00:00","updated_at":"2026-06-10T14:10:43.605790+00:00"}