{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:44ARDOH5WFG53MLK6EX5BMLSI3","short_pith_number":"pith:44ARDOH5","canonical_record":{"source":{"id":"1505.01768","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2015-05-07T16:36:41Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"6537f3c1e8a74e62dfd351b24269562b59868142d33c4cbcb5bbef1a6637e57f","abstract_canon_sha256":"fbc8adbc0940020d969a7a437d077e886ae20568ff419197ef88629027838b8e"},"schema_version":"1.0"},"canonical_sha256":"e70111b8fdb14dddb16af12fd0b17246e842dc8a838fd0629ac39c5b0bd276c5","source":{"kind":"arxiv","id":"1505.01768","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01768","created_at":"2026-05-18T01:02:05Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01768v1","created_at":"2026-05-18T01:02:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01768","created_at":"2026-05-18T01:02:05Z"},{"alias_kind":"pith_short_12","alias_value":"44ARDOH5WFG5","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44ARDOH5WFG53MLK","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44ARDOH5","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:44ARDOH5WFG53MLK6EX5BMLSI3","target":"record","payload":{"canonical_record":{"source":{"id":"1505.01768","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2015-05-07T16:36:41Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"6537f3c1e8a74e62dfd351b24269562b59868142d33c4cbcb5bbef1a6637e57f","abstract_canon_sha256":"fbc8adbc0940020d969a7a437d077e886ae20568ff419197ef88629027838b8e"},"schema_version":"1.0"},"canonical_sha256":"e70111b8fdb14dddb16af12fd0b17246e842dc8a838fd0629ac39c5b0bd276c5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:05.143373Z","signature_b64":"n3MkE6wYFErSZ9/i7VuAzZIvxB0T+A/CtMqlsTIphoF9Pe54weH61F7dVKjVRu/ubkI7YkRF+gzxq7fLEd+7AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e70111b8fdb14dddb16af12fd0b17246e842dc8a838fd0629ac39c5b0bd276c5","last_reissued_at":"2026-05-18T01:02:05.142839Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:05.142839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.01768","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:02:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T2hdIFxcEOQ2nnoszEE5pl7p0xqKNzPKx24bRlpVfDqbINOK6yp2fmHYkxgNRxKsAXA9GbRYKTBOlVCrac7sDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:51:38.835165Z"},"content_sha256":"978e294e0794bd03c04a0daa4a3e0fcf1aa5ffaccaa82daf9e1a3059b84a5aa3","schema_version":"1.0","event_id":"sha256:978e294e0794bd03c04a0daa4a3e0fcf1aa5ffaccaa82daf9e1a3059b84a5aa3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:44ARDOH5WFG53MLK6EX5BMLSI3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometric pumping in autophoretic channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft"],"primary_cat":"physics.flu-dyn","authors_text":"Eric Lauga, Gabriele De Canio, Nicolas Lobato-Dauzier, Sebastien Michelin, Thomas D. Montenegro Johnson","submitted_at":"2015-05-07T16:36:41Z","abstract_excerpt":"Many microfluidic devices use macroscopic pressure differentials to overcome viscous friction and generate flows in microchannels. In this work, we investigate how the chemical and geometric properties of the channel walls can drive a net flow by exploiting the autophoretic slip flows induced along active walls by local concentration gradients of a solute species. We show that chemical patterning of the wall is not required to generate and control a net flux within the channel, rather channel geometry alone is sufficient. Using numerical simulations, we determine how geometric characteristics "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01768","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:02:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sSFxkCR+D/mrNfTPIJWuxTAaV9znGKjtUBp9xBcbfq4EvsAPTp1Ob3kwC6reslKHmJoTww49L9xaQNzB+GtmCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:51:38.836351Z"},"content_sha256":"761459e42a373532a2d90f547e0bbeaece6394ab2edbbb21c68e9142d5262a2d","schema_version":"1.0","event_id":"sha256:761459e42a373532a2d90f547e0bbeaece6394ab2edbbb21c68e9142d5262a2d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/44ARDOH5WFG53MLK6EX5BMLSI3/bundle.json","state_url":"https://pith.science/pith/44ARDOH5WFG53MLK6EX5BMLSI3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/44ARDOH5WFG53MLK6EX5BMLSI3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T18:51:38Z","links":{"resolver":"https://pith.science/pith/44ARDOH5WFG53MLK6EX5BMLSI3","bundle":"https://pith.science/pith/44ARDOH5WFG53MLK6EX5BMLSI3/bundle.json","state":"https://pith.science/pith/44ARDOH5WFG53MLK6EX5BMLSI3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/44ARDOH5WFG53MLK6EX5BMLSI3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:44ARDOH5WFG53MLK6EX5BMLSI3","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":"fbc8adbc0940020d969a7a437d077e886ae20568ff419197ef88629027838b8e","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2015-05-07T16:36:41Z","title_canon_sha256":"6537f3c1e8a74e62dfd351b24269562b59868142d33c4cbcb5bbef1a6637e57f"},"schema_version":"1.0","source":{"id":"1505.01768","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01768","created_at":"2026-05-18T01:02:05Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01768v1","created_at":"2026-05-18T01:02:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01768","created_at":"2026-05-18T01:02:05Z"},{"alias_kind":"pith_short_12","alias_value":"44ARDOH5WFG5","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44ARDOH5WFG53MLK","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44ARDOH5","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:761459e42a373532a2d90f547e0bbeaece6394ab2edbbb21c68e9142d5262a2d","target":"graph","created_at":"2026-05-18T01:02:05Z","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":"Many microfluidic devices use macroscopic pressure differentials to overcome viscous friction and generate flows in microchannels. In this work, we investigate how the chemical and geometric properties of the channel walls can drive a net flow by exploiting the autophoretic slip flows induced along active walls by local concentration gradients of a solute species. We show that chemical patterning of the wall is not required to generate and control a net flux within the channel, rather channel geometry alone is sufficient. Using numerical simulations, we determine how geometric characteristics ","authors_text":"Eric Lauga, Gabriele De Canio, Nicolas Lobato-Dauzier, Sebastien Michelin, Thomas D. Montenegro Johnson","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2015-05-07T16:36:41Z","title":"Geometric pumping in autophoretic channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01768","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":"sha256:978e294e0794bd03c04a0daa4a3e0fcf1aa5ffaccaa82daf9e1a3059b84a5aa3","target":"record","created_at":"2026-05-18T01:02:05Z","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":"fbc8adbc0940020d969a7a437d077e886ae20568ff419197ef88629027838b8e","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2015-05-07T16:36:41Z","title_canon_sha256":"6537f3c1e8a74e62dfd351b24269562b59868142d33c4cbcb5bbef1a6637e57f"},"schema_version":"1.0","source":{"id":"1505.01768","kind":"arxiv","version":1}},"canonical_sha256":"e70111b8fdb14dddb16af12fd0b17246e842dc8a838fd0629ac39c5b0bd276c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e70111b8fdb14dddb16af12fd0b17246e842dc8a838fd0629ac39c5b0bd276c5","first_computed_at":"2026-05-18T01:02:05.142839Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:05.142839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n3MkE6wYFErSZ9/i7VuAzZIvxB0T+A/CtMqlsTIphoF9Pe54weH61F7dVKjVRu/ubkI7YkRF+gzxq7fLEd+7AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:05.143373Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.01768","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:978e294e0794bd03c04a0daa4a3e0fcf1aa5ffaccaa82daf9e1a3059b84a5aa3","sha256:761459e42a373532a2d90f547e0bbeaece6394ab2edbbb21c68e9142d5262a2d"],"state_sha256":"02357c74275f1c8d6022f4fde963e4e2cc5a9e0b1294da93241fdb0f9a036bee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tpn2pKrOcD0ti4LYy4W16My6/45ERrnWIFQR0mwlcatHow3TzJ/nZ93Hr5aZbQHB6oF1xFCOlidmegfmdhLsAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:51:38.842219Z","bundle_sha256":"1a65bd8c3b7a1765e55c42f6547ec553337dde3d9441937671a29b6902383073"}}