{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:WRZ4GBATBU6WAYD43N2QKJBQSZ","short_pith_number":"pith:WRZ4GBAT","schema_version":"1.0","canonical_sha256":"b473c304130d3d60607cdb75052430966ef03537bd500044932fdd3fe1833eaa","source":{"kind":"arxiv","id":"2608.06413","version":1},"attestation_state":"computed","paper":{"title":"Competing Energetics Govern Gas Permeation in Polymer of Intrinsic Microporosity (PIM) Membranes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.chem-ph","authors_text":"Jianhao Qian, Menachem Elimelech, Ruoyu Wang","submitted_at":"2026-08-05T05:55:53Z","abstract_excerpt":"Polymer membranes, particularly polymers of intrinsic microporosity (PIMs), hold great promise for gas separation applications. However, the long-dominant solution-diffusion model, which treats the membrane as a nonporous homogeneous medium, does not resolve how gas-solid atomic interactions govern molecular transport in intrinsic micropores, limiting rational bottom-up membrane design. In this work, we employ non-equilibrium molecular dynamics simulations to investigate the permeation of various gases (He, H2, CH4, N2, O2, and CO2) through PIM-1 as a representative PIM membrane across a range"},"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":"2608.06413","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2026-08-05T05:55:53Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"13b8c4c86c593cf8e9fc2dd7634ba77b8ec6a676dec360c2872b8a24c24375cd","abstract_canon_sha256":"1f92ceda7ff08dc4c396c80b4253ba5c1604f0568e2aee6ef366942b2e39283f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-10T01:10:36.488358Z","signature_b64":"nOIeQ8UQdyN0tCk/FoOrtYPt4yqI5EJomkC22ru7jIIgirT7+Bx6LhckC4sUY0exVh3sPTDgvgoZacv2goDtAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b473c304130d3d60607cdb75052430966ef03537bd500044932fdd3fe1833eaa","last_reissued_at":"2026-08-10T01:10:36.485637Z","signature_status":"signed_v1","first_computed_at":"2026-08-10T01:10:36.485637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Competing Energetics Govern Gas Permeation in Polymer of Intrinsic Microporosity (PIM) Membranes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.chem-ph","authors_text":"Jianhao Qian, Menachem Elimelech, Ruoyu Wang","submitted_at":"2026-08-05T05:55:53Z","abstract_excerpt":"Polymer membranes, particularly polymers of intrinsic microporosity (PIMs), hold great promise for gas separation applications. However, the long-dominant solution-diffusion model, which treats the membrane as a nonporous homogeneous medium, does not resolve how gas-solid atomic interactions govern molecular transport in intrinsic micropores, limiting rational bottom-up membrane design. In this work, we employ non-equilibrium molecular dynamics simulations to investigate the permeation of various gases (He, H2, CH4, N2, O2, and CO2) through PIM-1 as a representative PIM membrane across a range"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.06413","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/2608.06413/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":"2608.06413","created_at":"2026-08-10T01:10:36.486930+00:00"},{"alias_kind":"arxiv_version","alias_value":"2608.06413v1","created_at":"2026-08-10T01:10:36.486930+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.06413","created_at":"2026-08-10T01:10:36.486930+00:00"},{"alias_kind":"pith_short_12","alias_value":"WRZ4GBATBU6W","created_at":"2026-08-10T01:10:36.486930+00:00"},{"alias_kind":"pith_short_16","alias_value":"WRZ4GBATBU6WAYD4","created_at":"2026-08-10T01:10:36.486930+00:00"},{"alias_kind":"pith_short_8","alias_value":"WRZ4GBAT","created_at":"2026-08-10T01:10:36.486930+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/WRZ4GBATBU6WAYD43N2QKJBQSZ","json":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ.json","graph_json":"https://pith.science/api/pith-number/WRZ4GBATBU6WAYD43N2QKJBQSZ/graph.json","events_json":"https://pith.science/api/pith-number/WRZ4GBATBU6WAYD43N2QKJBQSZ/events.json","paper":"https://pith.science/paper/WRZ4GBAT"},"agent_actions":{"view_html":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ","download_json":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ.json","view_paper":"https://pith.science/paper/WRZ4GBAT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2608.06413&json=true","fetch_graph":"https://pith.science/api/pith-number/WRZ4GBATBU6WAYD43N2QKJBQSZ/graph.json","fetch_events":"https://pith.science/api/pith-number/WRZ4GBATBU6WAYD43N2QKJBQSZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ/action/storage_attestation","attest_author":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ/action/author_attestation","sign_citation":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ/action/citation_signature","submit_replication":"https://pith.science/pith/WRZ4GBATBU6WAYD43N2QKJBQSZ/action/replication_record"}},"created_at":"2026-08-10T01:10:36.486930+00:00","updated_at":"2026-08-10T01:10:36.486930+00:00"}