{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:UHBOTLP3VUERKSVNNETPMMKBDV","short_pith_number":"pith:UHBOTLP3","canonical_record":{"source":{"id":"0912.4284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-22T12:16:26Z","cross_cats_sorted":[],"title_canon_sha256":"1610d49ec1e07561c5daf9bd449a3f651c1bc4fc70670bcdba83a4ad2d6ef024","abstract_canon_sha256":"8532ef0628b7a74917c1ce6f3fb3a91c74f6f9c1d1f391417ceffb3fb4e2e243"},"schema_version":"1.0"},"canonical_sha256":"a1c2e9adfbad09154aad6926f631411d64b6599db4eff6bd0a3cc082105d94b4","source":{"kind":"arxiv","id":"0912.4284","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.4284","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"arxiv_version","alias_value":"0912.4284v1","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.4284","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"pith_short_12","alias_value":"UHBOTLP3VUER","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"UHBOTLP3VUERKSVN","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"UHBOTLP3","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:UHBOTLP3VUERKSVNNETPMMKBDV","target":"record","payload":{"canonical_record":{"source":{"id":"0912.4284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-22T12:16:26Z","cross_cats_sorted":[],"title_canon_sha256":"1610d49ec1e07561c5daf9bd449a3f651c1bc4fc70670bcdba83a4ad2d6ef024","abstract_canon_sha256":"8532ef0628b7a74917c1ce6f3fb3a91c74f6f9c1d1f391417ceffb3fb4e2e243"},"schema_version":"1.0"},"canonical_sha256":"a1c2e9adfbad09154aad6926f631411d64b6599db4eff6bd0a3cc082105d94b4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:59.328790Z","signature_b64":"2yy0jSM8dZeSMaAz2el71pmdr2pd6PoRAgt92LfUsBrb6cni43l7TH1KE039FloTFP3/JTtI6Wuno1IkD59CCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1c2e9adfbad09154aad6926f631411d64b6599db4eff6bd0a3cc082105d94b4","last_reissued_at":"2026-05-18T01:04:59.328198Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:59.328198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0912.4284","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":"2026-05-18T01:04:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7P3ORdilzKLboH8tQqez9t6u8SMEO5GOw7eunxNIUMc16PvqQzd/x2ZZ+0nwMz6/xMOfyZfA9JLoMilR1O6SBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:20:54.403238Z"},"content_sha256":"d245747509f0b1dabbe6cda43cf0e3b0120175a2b9ceb1984b423f3bfd71743f","schema_version":"1.0","event_id":"sha256:d245747509f0b1dabbe6cda43cf0e3b0120175a2b9ceb1984b423f3bfd71743f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:UHBOTLP3VUERKSVNNETPMMKBDV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Many-Body Force and Mobility Measurements in Colloidal Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Eric R. Dufresne, Jason W. Merrill, Jerzy Blawzdziewicz, Sunil K. Sainis","submitted_at":"2009-12-22T12:16:26Z","abstract_excerpt":"We demonstrate a technique for simultaneously measuring each component of the force vectors and mobility tensor of a small collection of colloidal particles based on observing a set of particle trajectories. For a few-body system of micron-sized polymer beads in oil separated by several particle radii, we find that the mobility tensor is well-described by a pairwise Stokeslet model. This stands in contrast to the electrostatic interactions, which were found to deviate significantly from a pairwise model. The measurement technique presented here should be simple to extend to systems of heteroge"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.4284","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":"2026-05-18T01:04:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J6V9SCL5NHMPzis7OsCv+cTv/B14Y3BlGIjQ0TLZUk9Yb16WN4WCtlvm9UgterE164zLx6HJRtVC+L/oANO2Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:20:54.403600Z"},"content_sha256":"c0515ca392659caa3431fe0529bbfaa163189d863df60e04c773e7d1810dee38","schema_version":"1.0","event_id":"sha256:c0515ca392659caa3431fe0529bbfaa163189d863df60e04c773e7d1810dee38"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UHBOTLP3VUERKSVNNETPMMKBDV/bundle.json","state_url":"https://pith.science/pith/UHBOTLP3VUERKSVNNETPMMKBDV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UHBOTLP3VUERKSVNNETPMMKBDV/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":"2026-06-02T11:20:54Z","links":{"resolver":"https://pith.science/pith/UHBOTLP3VUERKSVNNETPMMKBDV","bundle":"https://pith.science/pith/UHBOTLP3VUERKSVNNETPMMKBDV/bundle.json","state":"https://pith.science/pith/UHBOTLP3VUERKSVNNETPMMKBDV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UHBOTLP3VUERKSVNNETPMMKBDV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:UHBOTLP3VUERKSVNNETPMMKBDV","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":"8532ef0628b7a74917c1ce6f3fb3a91c74f6f9c1d1f391417ceffb3fb4e2e243","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-22T12:16:26Z","title_canon_sha256":"1610d49ec1e07561c5daf9bd449a3f651c1bc4fc70670bcdba83a4ad2d6ef024"},"schema_version":"1.0","source":{"id":"0912.4284","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.4284","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"arxiv_version","alias_value":"0912.4284v1","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.4284","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"pith_short_12","alias_value":"UHBOTLP3VUER","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"UHBOTLP3VUERKSVN","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"UHBOTLP3","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:c0515ca392659caa3431fe0529bbfaa163189d863df60e04c773e7d1810dee38","target":"graph","created_at":"2026-05-18T01:04:59Z","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":"We demonstrate a technique for simultaneously measuring each component of the force vectors and mobility tensor of a small collection of colloidal particles based on observing a set of particle trajectories. For a few-body system of micron-sized polymer beads in oil separated by several particle radii, we find that the mobility tensor is well-described by a pairwise Stokeslet model. This stands in contrast to the electrostatic interactions, which were found to deviate significantly from a pairwise model. The measurement technique presented here should be simple to extend to systems of heteroge","authors_text":"Eric R. Dufresne, Jason W. Merrill, Jerzy Blawzdziewicz, Sunil K. Sainis","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-22T12:16:26Z","title":"Many-Body Force and Mobility Measurements in Colloidal Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.4284","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:d245747509f0b1dabbe6cda43cf0e3b0120175a2b9ceb1984b423f3bfd71743f","target":"record","created_at":"2026-05-18T01:04:59Z","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":"8532ef0628b7a74917c1ce6f3fb3a91c74f6f9c1d1f391417ceffb3fb4e2e243","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-22T12:16:26Z","title_canon_sha256":"1610d49ec1e07561c5daf9bd449a3f651c1bc4fc70670bcdba83a4ad2d6ef024"},"schema_version":"1.0","source":{"id":"0912.4284","kind":"arxiv","version":1}},"canonical_sha256":"a1c2e9adfbad09154aad6926f631411d64b6599db4eff6bd0a3cc082105d94b4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1c2e9adfbad09154aad6926f631411d64b6599db4eff6bd0a3cc082105d94b4","first_computed_at":"2026-05-18T01:04:59.328198Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:59.328198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2yy0jSM8dZeSMaAz2el71pmdr2pd6PoRAgt92LfUsBrb6cni43l7TH1KE039FloTFP3/JTtI6Wuno1IkD59CCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:59.328790Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.4284","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d245747509f0b1dabbe6cda43cf0e3b0120175a2b9ceb1984b423f3bfd71743f","sha256:c0515ca392659caa3431fe0529bbfaa163189d863df60e04c773e7d1810dee38"],"state_sha256":"67658edf77f4b0b89a43766020f82d854c1a720951faf60d78b74508a8e15995"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ya16V04mu1XRHeMqb1rLW5N1XHZuOzu5jBDYlqFMTB1eu6dQ7sB/I2QeBvvaXvIz1KhczJZBxnlTI+JtUTJcCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T11:20:54.405523Z","bundle_sha256":"e3b7f39b4bdc020e5f6cf068a404b492942fd69392c450eddb383e8b2176ce19"}}