{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:4NPHYV7RFASIY2TQH3R3ELDFOX","short_pith_number":"pith:4NPHYV7R","canonical_record":{"source":{"id":"1710.07033","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-10-19T08:29:20Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"74fdb6d67c8e444e1e62750cfb0c0dd7de14720098e2d6dd45bf54070f8f0345","abstract_canon_sha256":"20092d0ebba4772983d5230f70674c51439940931fabb80b17049cdfafe6542f"},"schema_version":"1.0"},"canonical_sha256":"e35e7c57f128248c6a703ee3b22c6575ee55b8e7fe590d68d1562259a80bc03a","source":{"kind":"arxiv","id":"1710.07033","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.07033","created_at":"2026-05-18T00:28:52Z"},{"alias_kind":"arxiv_version","alias_value":"1710.07033v1","created_at":"2026-05-18T00:28:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.07033","created_at":"2026-05-18T00:28:52Z"},{"alias_kind":"pith_short_12","alias_value":"4NPHYV7RFASI","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"4NPHYV7RFASIY2TQ","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"4NPHYV7R","created_at":"2026-05-18T12:31:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:4NPHYV7RFASIY2TQH3R3ELDFOX","target":"record","payload":{"canonical_record":{"source":{"id":"1710.07033","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-10-19T08:29:20Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"74fdb6d67c8e444e1e62750cfb0c0dd7de14720098e2d6dd45bf54070f8f0345","abstract_canon_sha256":"20092d0ebba4772983d5230f70674c51439940931fabb80b17049cdfafe6542f"},"schema_version":"1.0"},"canonical_sha256":"e35e7c57f128248c6a703ee3b22c6575ee55b8e7fe590d68d1562259a80bc03a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:52.080135Z","signature_b64":"a09vS7iUsdxCFkBHT6q9KLoyrAg3fOopskE34y4M7cRLrp4sH0fcpdQ2bE+JKN1PqkWFWYorRdMcbFpXScIDAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e35e7c57f128248c6a703ee3b22c6575ee55b8e7fe590d68d1562259a80bc03a","last_reissued_at":"2026-05-18T00:28:52.079414Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:52.079414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.07033","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":"2026-05-18T00:28:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ww2RsEKygc6FFvsleipR+zGLteTCXIeH+CWO3f/ywXlU/V7tsGRicozZi/ZWkSEj8qGBtI+YVPmZdZjgbVDaAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:37:43.308809Z"},"content_sha256":"8a67f72b8ba1f9d03cf25ce4da75fc988695003abf9bd77ae0f5f97ef8997326","schema_version":"1.0","event_id":"sha256:8a67f72b8ba1f9d03cf25ce4da75fc988695003abf9bd77ae0f5f97ef8997326"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:4NPHYV7RFASIY2TQH3R3ELDFOX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Buckling instability causes inertial thrust for spherical swimmers at all scales","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft"],"primary_cat":"physics.flu-dyn","authors_text":"A. Djellouli, C. Quilliet, G. Coupier, H. Djeridi, P. Marmottant","submitted_at":"2017-10-19T08:29:20Z","abstract_excerpt":"Microswimmers, and among them aspirant microrobots, generally have to cope with flows where viscous forces are dominant, characterized by a low Reynolds number ($Re$). This implies constraints on the possible sequences of body motion, which have to be nonreciprocal. Furthermore, the presence of a strong drag limits the range of resulting velocities. Here, we propose a swimming mechanism, which uses the buckling instability triggered by pressure waves to propel a spherical, hollow shell. With a macroscopic experimental model, we show that a net displacement is produced at all $Re$ regimes. An o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.07033","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":"2026-05-18T00:28:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KBuqlfTS0iy+LVCEfs5adiU8YpttitCVB+nzeGlXreOUNQLMKUEcX3W5WA/u+gChfO8Mxzq6Comh4icoMTqvDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:37:43.309492Z"},"content_sha256":"f2e26dbacf52adee8b4a1bb6a6af27e9c80ce75784ca71fb17ed6cddc9cc4a1d","schema_version":"1.0","event_id":"sha256:f2e26dbacf52adee8b4a1bb6a6af27e9c80ce75784ca71fb17ed6cddc9cc4a1d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4NPHYV7RFASIY2TQH3R3ELDFOX/bundle.json","state_url":"https://pith.science/pith/4NPHYV7RFASIY2TQH3R3ELDFOX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4NPHYV7RFASIY2TQH3R3ELDFOX/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":"2026-06-07T16:37:43Z","links":{"resolver":"https://pith.science/pith/4NPHYV7RFASIY2TQH3R3ELDFOX","bundle":"https://pith.science/pith/4NPHYV7RFASIY2TQH3R3ELDFOX/bundle.json","state":"https://pith.science/pith/4NPHYV7RFASIY2TQH3R3ELDFOX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4NPHYV7RFASIY2TQH3R3ELDFOX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:4NPHYV7RFASIY2TQH3R3ELDFOX","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":"20092d0ebba4772983d5230f70674c51439940931fabb80b17049cdfafe6542f","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-10-19T08:29:20Z","title_canon_sha256":"74fdb6d67c8e444e1e62750cfb0c0dd7de14720098e2d6dd45bf54070f8f0345"},"schema_version":"1.0","source":{"id":"1710.07033","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.07033","created_at":"2026-05-18T00:28:52Z"},{"alias_kind":"arxiv_version","alias_value":"1710.07033v1","created_at":"2026-05-18T00:28:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.07033","created_at":"2026-05-18T00:28:52Z"},{"alias_kind":"pith_short_12","alias_value":"4NPHYV7RFASI","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"4NPHYV7RFASIY2TQ","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"4NPHYV7R","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:f2e26dbacf52adee8b4a1bb6a6af27e9c80ce75784ca71fb17ed6cddc9cc4a1d","target":"graph","created_at":"2026-05-18T00:28:52Z","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":"Microswimmers, and among them aspirant microrobots, generally have to cope with flows where viscous forces are dominant, characterized by a low Reynolds number ($Re$). This implies constraints on the possible sequences of body motion, which have to be nonreciprocal. Furthermore, the presence of a strong drag limits the range of resulting velocities. Here, we propose a swimming mechanism, which uses the buckling instability triggered by pressure waves to propel a spherical, hollow shell. With a macroscopic experimental model, we show that a net displacement is produced at all $Re$ regimes. An o","authors_text":"A. Djellouli, C. Quilliet, G. Coupier, H. Djeridi, P. Marmottant","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-10-19T08:29:20Z","title":"Buckling instability causes inertial thrust for spherical swimmers at all scales"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.07033","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":"sha256:8a67f72b8ba1f9d03cf25ce4da75fc988695003abf9bd77ae0f5f97ef8997326","target":"record","created_at":"2026-05-18T00:28:52Z","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":"20092d0ebba4772983d5230f70674c51439940931fabb80b17049cdfafe6542f","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-10-19T08:29:20Z","title_canon_sha256":"74fdb6d67c8e444e1e62750cfb0c0dd7de14720098e2d6dd45bf54070f8f0345"},"schema_version":"1.0","source":{"id":"1710.07033","kind":"arxiv","version":1}},"canonical_sha256":"e35e7c57f128248c6a703ee3b22c6575ee55b8e7fe590d68d1562259a80bc03a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e35e7c57f128248c6a703ee3b22c6575ee55b8e7fe590d68d1562259a80bc03a","first_computed_at":"2026-05-18T00:28:52.079414Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:52.079414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a09vS7iUsdxCFkBHT6q9KLoyrAg3fOopskE34y4M7cRLrp4sH0fcpdQ2bE+JKN1PqkWFWYorRdMcbFpXScIDAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:52.080135Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.07033","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a67f72b8ba1f9d03cf25ce4da75fc988695003abf9bd77ae0f5f97ef8997326","sha256:f2e26dbacf52adee8b4a1bb6a6af27e9c80ce75784ca71fb17ed6cddc9cc4a1d"],"state_sha256":"7f6757d87052065750cb3f653040e6d8842521d38e86deb861d68155dfd4a76b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"stBCi1Em0i9ZmIAlRuUYfG/3HIFYxriur2FK6f10UayEyPqq43OsEPpLJCUes0nPF2lesDwKAdGfJgmHyTT+AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T16:37:43.313119Z","bundle_sha256":"b9aee8981a417f341db1c95c43efe6181cc7b682aac12d2bf6884be1b2a0e613"}}