{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:EQGOOE3J4UAOWX6VEJZ5S63SDK","short_pith_number":"pith:EQGOOE3J","canonical_record":{"source":{"id":"1007.4985","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-07-28T14:16:11Z","cross_cats_sorted":[],"title_canon_sha256":"a65fcacaeda78148ed5090b6e9fec2b41281e9dc9784e2439746878170622fa6","abstract_canon_sha256":"604ce668504851c168ae67823d7bd6147c191a491f3c298703d283e124331e2b"},"schema_version":"1.0"},"canonical_sha256":"240ce71369e500eb5fd52273d97b721a862f934ad7c0e00685d79caa7784d249","source":{"kind":"arxiv","id":"1007.4985","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.4985","created_at":"2026-05-18T02:06:01Z"},{"alias_kind":"arxiv_version","alias_value":"1007.4985v1","created_at":"2026-05-18T02:06:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4985","created_at":"2026-05-18T02:06:01Z"},{"alias_kind":"pith_short_12","alias_value":"EQGOOE3J4UAO","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"EQGOOE3J4UAOWX6V","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"EQGOOE3J","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:EQGOOE3J4UAOWX6VEJZ5S63SDK","target":"record","payload":{"canonical_record":{"source":{"id":"1007.4985","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-07-28T14:16:11Z","cross_cats_sorted":[],"title_canon_sha256":"a65fcacaeda78148ed5090b6e9fec2b41281e9dc9784e2439746878170622fa6","abstract_canon_sha256":"604ce668504851c168ae67823d7bd6147c191a491f3c298703d283e124331e2b"},"schema_version":"1.0"},"canonical_sha256":"240ce71369e500eb5fd52273d97b721a862f934ad7c0e00685d79caa7784d249","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:01.662410Z","signature_b64":"A48Tl2m+/JXjompjNwa5Hru2vHn5FS3B6nOdgXo7BGjOaTtx+v2e9kLiOd6e/xR2psxWb38F+NuLk6VspdbyBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"240ce71369e500eb5fd52273d97b721a862f934ad7c0e00685d79caa7784d249","last_reissued_at":"2026-05-18T02:06:01.661746Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:01.661746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.4985","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":"2026-05-18T02:06:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pAk/40juyLAlvl68ZDg8b15hut2enpSBgDcfKtzMjwGPcDTLBpXeD2dVJLKINGM1prFhjZA84KhIigajQsLwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:58:31.378760Z"},"content_sha256":"5f8b9edd9c6bde138083270083fefd867506e1853cf0acad50a74418ef2ed699","schema_version":"1.0","event_id":"sha256:5f8b9edd9c6bde138083270083fefd867506e1853cf0acad50a74418ef2ed699"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:EQGOOE3J4UAOWX6VEJZ5S63SDK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anomalous Strength Characteristics of Tilt Grain Boundaries in Graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Rassin Grantab, Rodney S. Ruoff, Vivek B. Shenoy","submitted_at":"2010-07-28T14:16:11Z","abstract_excerpt":"Using molecular dynamics simulations and first principles calculations, we have studied the structure and mechanical strength of tilt grain boundaries in graphene sheets that arise during CVD growth of graphene on metal substrates. Surprisingly, we find that for tilt boundaries in the vicinity of both the zig-zag and arm-chair orientations, large angle boundaries with a higher density of 5-7 defect pairs are stronger than the low-angle boundaries which are comprised of fewer defects per unit length. Interestingly, the trends in our results cannot be explained by a continuum Griffith-type fract"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4985","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":"2026-05-18T02:06:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/sYmNYCHatibBq6f80HieMA8xTlX2k5qAk6rN3+tdcNlVbMt9AUb6boBTU14+t04p7ivI4oZRccmOYEITqBXDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:58:31.379294Z"},"content_sha256":"0562c4adea5fe85f89e993d36a35e2bafb4cbb28b7ee3b6a087dd7ce35bdcc89","schema_version":"1.0","event_id":"sha256:0562c4adea5fe85f89e993d36a35e2bafb4cbb28b7ee3b6a087dd7ce35bdcc89"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EQGOOE3J4UAOWX6VEJZ5S63SDK/bundle.json","state_url":"https://pith.science/pith/EQGOOE3J4UAOWX6VEJZ5S63SDK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EQGOOE3J4UAOWX6VEJZ5S63SDK/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":"2026-06-05T13:58:31Z","links":{"resolver":"https://pith.science/pith/EQGOOE3J4UAOWX6VEJZ5S63SDK","bundle":"https://pith.science/pith/EQGOOE3J4UAOWX6VEJZ5S63SDK/bundle.json","state":"https://pith.science/pith/EQGOOE3J4UAOWX6VEJZ5S63SDK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EQGOOE3J4UAOWX6VEJZ5S63SDK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:EQGOOE3J4UAOWX6VEJZ5S63SDK","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":"604ce668504851c168ae67823d7bd6147c191a491f3c298703d283e124331e2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-07-28T14:16:11Z","title_canon_sha256":"a65fcacaeda78148ed5090b6e9fec2b41281e9dc9784e2439746878170622fa6"},"schema_version":"1.0","source":{"id":"1007.4985","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.4985","created_at":"2026-05-18T02:06:01Z"},{"alias_kind":"arxiv_version","alias_value":"1007.4985v1","created_at":"2026-05-18T02:06:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4985","created_at":"2026-05-18T02:06:01Z"},{"alias_kind":"pith_short_12","alias_value":"EQGOOE3J4UAO","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"EQGOOE3J4UAOWX6V","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"EQGOOE3J","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:0562c4adea5fe85f89e993d36a35e2bafb4cbb28b7ee3b6a087dd7ce35bdcc89","target":"graph","created_at":"2026-05-18T02:06:01Z","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":"Using molecular dynamics simulations and first principles calculations, we have studied the structure and mechanical strength of tilt grain boundaries in graphene sheets that arise during CVD growth of graphene on metal substrates. Surprisingly, we find that for tilt boundaries in the vicinity of both the zig-zag and arm-chair orientations, large angle boundaries with a higher density of 5-7 defect pairs are stronger than the low-angle boundaries which are comprised of fewer defects per unit length. Interestingly, the trends in our results cannot be explained by a continuum Griffith-type fract","authors_text":"Rassin Grantab, Rodney S. Ruoff, Vivek B. Shenoy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-07-28T14:16:11Z","title":"Anomalous Strength Characteristics of Tilt Grain Boundaries in Graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4985","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":"sha256:5f8b9edd9c6bde138083270083fefd867506e1853cf0acad50a74418ef2ed699","target":"record","created_at":"2026-05-18T02:06:01Z","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":"604ce668504851c168ae67823d7bd6147c191a491f3c298703d283e124331e2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-07-28T14:16:11Z","title_canon_sha256":"a65fcacaeda78148ed5090b6e9fec2b41281e9dc9784e2439746878170622fa6"},"schema_version":"1.0","source":{"id":"1007.4985","kind":"arxiv","version":1}},"canonical_sha256":"240ce71369e500eb5fd52273d97b721a862f934ad7c0e00685d79caa7784d249","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"240ce71369e500eb5fd52273d97b721a862f934ad7c0e00685d79caa7784d249","first_computed_at":"2026-05-18T02:06:01.661746Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:01.661746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A48Tl2m+/JXjompjNwa5Hru2vHn5FS3B6nOdgXo7BGjOaTtx+v2e9kLiOd6e/xR2psxWb38F+NuLk6VspdbyBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:01.662410Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.4985","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f8b9edd9c6bde138083270083fefd867506e1853cf0acad50a74418ef2ed699","sha256:0562c4adea5fe85f89e993d36a35e2bafb4cbb28b7ee3b6a087dd7ce35bdcc89"],"state_sha256":"203107ddd13a36376b61a5b0d91aa2eed8c0e49f44b13f69ecaa7d143406a659"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3sVxO3929ssGDq9RUb5hnx+zUuErz8qRb7xKCqZwsMe8H0ExSJDjcw5Mje7qyO3shGe3TDSReOxV3PoNetriBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T13:58:31.381328Z","bundle_sha256":"3914866f8ac96b45ea439b9460f04b885c7205162128f2d6958cb2969ddf61eb"}}