{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:OMWKWWBMMBCGIOKJEDFSQM5JUD","short_pith_number":"pith:OMWKWWBM","schema_version":"1.0","canonical_sha256":"732cab582c604464394920cb2833a9a0f2b56d2b9134b400e748b4530cb43cf8","source":{"kind":"arxiv","id":"2104.03390","version":3},"attestation_state":"computed","paper":{"title":"Geometrically Induced Selectivity and Unidirectional Electroosmosis in Uncharged Nanopores","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"physics.flu-dyn","authors_text":"Blasco Morozzo della Rocca, Giovanni Di Muccio, Mauro Chinappi","submitted_at":"2021-04-07T20:56:53Z","abstract_excerpt":"Selectivity towards positive and negative ions in nanopores is often associated with electroosmotic flow, the control of which is pivotal in several micro-nanofluidic technologies. Selectivity is traditionally understood to be a consequence of surface charges that alter the ion distribution in the pore lumen. Here we present a purely geometrical mechanism to induce ionic selectivity and electroosmotic flow in uncharged nanopores and we tested it via molecular dynamics simulations. Our approach exploits the accumulation of charges, driven by an external electric field, in a coaxial cavity that "},"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":"2104.03390","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-04-07T20:56:53Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"f643d599514f13e3a125b5732c1ce8741d87dfd9a7246b37bfe8b6acbe08f797","abstract_canon_sha256":"0f6586ebabf0e7c70d42650e761fbb179cb2f06ab7d59d73604f43acec62bf07"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:16:12.040860Z","signature_b64":"ZKDLobYdQDLyWKzcqO0jIY7JgCQ6XO1ywXx1e7/5K9OUR0njOkTTY7WXzByq9b3OrjNQM9Nn4w+0azw0Y/OpAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"732cab582c604464394920cb2833a9a0f2b56d2b9134b400e748b4530cb43cf8","last_reissued_at":"2026-07-05T04:16:12.040432Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:16:12.040432Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Geometrically Induced Selectivity and Unidirectional Electroosmosis in Uncharged Nanopores","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"physics.flu-dyn","authors_text":"Blasco Morozzo della Rocca, Giovanni Di Muccio, Mauro Chinappi","submitted_at":"2021-04-07T20:56:53Z","abstract_excerpt":"Selectivity towards positive and negative ions in nanopores is often associated with electroosmotic flow, the control of which is pivotal in several micro-nanofluidic technologies. Selectivity is traditionally understood to be a consequence of surface charges that alter the ion distribution in the pore lumen. Here we present a purely geometrical mechanism to induce ionic selectivity and electroosmotic flow in uncharged nanopores and we tested it via molecular dynamics simulations. Our approach exploits the accumulation of charges, driven by an external electric field, in a coaxial cavity that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.03390","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/2104.03390/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":"2104.03390","created_at":"2026-07-05T04:16:12.040509+00:00"},{"alias_kind":"arxiv_version","alias_value":"2104.03390v3","created_at":"2026-07-05T04:16:12.040509+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.03390","created_at":"2026-07-05T04:16:12.040509+00:00"},{"alias_kind":"pith_short_12","alias_value":"OMWKWWBMMBCG","created_at":"2026-07-05T04:16:12.040509+00:00"},{"alias_kind":"pith_short_16","alias_value":"OMWKWWBMMBCGIOKJ","created_at":"2026-07-05T04:16:12.040509+00:00"},{"alias_kind":"pith_short_8","alias_value":"OMWKWWBM","created_at":"2026-07-05T04:16:12.040509+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/OMWKWWBMMBCGIOKJEDFSQM5JUD","json":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD.json","graph_json":"https://pith.science/api/pith-number/OMWKWWBMMBCGIOKJEDFSQM5JUD/graph.json","events_json":"https://pith.science/api/pith-number/OMWKWWBMMBCGIOKJEDFSQM5JUD/events.json","paper":"https://pith.science/paper/OMWKWWBM"},"agent_actions":{"view_html":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD","download_json":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD.json","view_paper":"https://pith.science/paper/OMWKWWBM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2104.03390&json=true","fetch_graph":"https://pith.science/api/pith-number/OMWKWWBMMBCGIOKJEDFSQM5JUD/graph.json","fetch_events":"https://pith.science/api/pith-number/OMWKWWBMMBCGIOKJEDFSQM5JUD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD/action/storage_attestation","attest_author":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD/action/author_attestation","sign_citation":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD/action/citation_signature","submit_replication":"https://pith.science/pith/OMWKWWBMMBCGIOKJEDFSQM5JUD/action/replication_record"}},"created_at":"2026-07-05T04:16:12.040509+00:00","updated_at":"2026-07-05T04:16:12.040509+00:00"}