{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:3EP3FUL6SPPMHMVLZB4PZFV72B","short_pith_number":"pith:3EP3FUL6","canonical_record":{"source":{"id":"1104.1746","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-04-10T04:57:42Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"93b71e419762a68855828321210d8c56f2ad64c104bbf8e164db6a8afbaca6e5","abstract_canon_sha256":"6f54b436119c4ecd9eca426c5e53c31f7ef2a0966ebdec38d12862e1140cf642"},"schema_version":"1.0"},"canonical_sha256":"d91fb2d17e93dec3b2abc878fc96bfd05e82911b1216e4a23238b83c455dbf6f","source":{"kind":"arxiv","id":"1104.1746","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1746","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1746v3","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1746","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"pith_short_12","alias_value":"3EP3FUL6SPPM","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"3EP3FUL6SPPMHMVL","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"3EP3FUL6","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:3EP3FUL6SPPMHMVLZB4PZFV72B","target":"record","payload":{"canonical_record":{"source":{"id":"1104.1746","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-04-10T04:57:42Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"93b71e419762a68855828321210d8c56f2ad64c104bbf8e164db6a8afbaca6e5","abstract_canon_sha256":"6f54b436119c4ecd9eca426c5e53c31f7ef2a0966ebdec38d12862e1140cf642"},"schema_version":"1.0"},"canonical_sha256":"d91fb2d17e93dec3b2abc878fc96bfd05e82911b1216e4a23238b83c455dbf6f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:18.664261Z","signature_b64":"nlithXVFMZJ1kNgQaGWoXWQyzTnR3FkCJhxgLQNJNJqMgxhh8+t00fyubHNRWgDzzWwOAzaflX11m6oksFMDDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d91fb2d17e93dec3b2abc878fc96bfd05e82911b1216e4a23238b83c455dbf6f","last_reissued_at":"2026-05-18T03:46:18.663758Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:18.663758Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.1746","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:46:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7hiwt7mZ4foUy88h2B2CeiibN7iKOnBn1CpnP6WpnP9/fP9gZTyz6delNNmDvlaGRVOqE5W+mIgqWja44WsMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:25:59.542470Z"},"content_sha256":"9e8a98eb423aa253e59d7ccbbff9753eaafb42e9c2cffb04ecabac24d8826451","schema_version":"1.0","event_id":"sha256:9e8a98eb423aa253e59d7ccbbff9753eaafb42e9c2cffb04ecabac24d8826451"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:3EP3FUL6SPPMHMVLZB4PZFV72B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Potential barrier of Graphene edges","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Weiliang Wang, Zhibing Li","submitted_at":"2011-04-10T04:57:42Z","abstract_excerpt":"We calculated row resolved density of states, charge distribution and work function of graphene's zigzag and armchair edge (either clean or terminated alternatively with H, O or OH group). The zigzag edge saturated via OH group has the lowest work function of 3.76 eV, while the zigzag edge terminated via O has the highest work function of 7.74 eV. The angle-dependent potential barrier on the edge is fitted to a multi-pole model and is explained by the charge distribution."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1746","kind":"arxiv","version":3},"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":"2026-05-18T03:46:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XJa0YDnoTgMk02UoepMLmguWT0lWDX9QnKD40nRvURFlsCXgtLaIQgI8LY30M9t9Xpo6AANgWukqAuORbjfsDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:25:59.543405Z"},"content_sha256":"0f906aa7330f6f4532696b249378eef9d0792622b72df1e3232de511c17d2d43","schema_version":"1.0","event_id":"sha256:0f906aa7330f6f4532696b249378eef9d0792622b72df1e3232de511c17d2d43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3EP3FUL6SPPMHMVLZB4PZFV72B/bundle.json","state_url":"https://pith.science/pith/3EP3FUL6SPPMHMVLZB4PZFV72B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3EP3FUL6SPPMHMVLZB4PZFV72B/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":"2026-06-05T20:25:59Z","links":{"resolver":"https://pith.science/pith/3EP3FUL6SPPMHMVLZB4PZFV72B","bundle":"https://pith.science/pith/3EP3FUL6SPPMHMVLZB4PZFV72B/bundle.json","state":"https://pith.science/pith/3EP3FUL6SPPMHMVLZB4PZFV72B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3EP3FUL6SPPMHMVLZB4PZFV72B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:3EP3FUL6SPPMHMVLZB4PZFV72B","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":"6f54b436119c4ecd9eca426c5e53c31f7ef2a0966ebdec38d12862e1140cf642","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-04-10T04:57:42Z","title_canon_sha256":"93b71e419762a68855828321210d8c56f2ad64c104bbf8e164db6a8afbaca6e5"},"schema_version":"1.0","source":{"id":"1104.1746","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1746","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1746v3","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1746","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"pith_short_12","alias_value":"3EP3FUL6SPPM","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"3EP3FUL6SPPMHMVL","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"3EP3FUL6","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:0f906aa7330f6f4532696b249378eef9d0792622b72df1e3232de511c17d2d43","target":"graph","created_at":"2026-05-18T03:46:18Z","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 calculated row resolved density of states, charge distribution and work function of graphene's zigzag and armchair edge (either clean or terminated alternatively with H, O or OH group). The zigzag edge saturated via OH group has the lowest work function of 3.76 eV, while the zigzag edge terminated via O has the highest work function of 7.74 eV. The angle-dependent potential barrier on the edge is fitted to a multi-pole model and is explained by the charge distribution.","authors_text":"Weiliang Wang, Zhibing Li","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-04-10T04:57:42Z","title":"Potential barrier of Graphene edges"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1746","kind":"arxiv","version":3},"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":"sha256:9e8a98eb423aa253e59d7ccbbff9753eaafb42e9c2cffb04ecabac24d8826451","target":"record","created_at":"2026-05-18T03:46:18Z","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":"6f54b436119c4ecd9eca426c5e53c31f7ef2a0966ebdec38d12862e1140cf642","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-04-10T04:57:42Z","title_canon_sha256":"93b71e419762a68855828321210d8c56f2ad64c104bbf8e164db6a8afbaca6e5"},"schema_version":"1.0","source":{"id":"1104.1746","kind":"arxiv","version":3}},"canonical_sha256":"d91fb2d17e93dec3b2abc878fc96bfd05e82911b1216e4a23238b83c455dbf6f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d91fb2d17e93dec3b2abc878fc96bfd05e82911b1216e4a23238b83c455dbf6f","first_computed_at":"2026-05-18T03:46:18.663758Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:18.663758Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nlithXVFMZJ1kNgQaGWoXWQyzTnR3FkCJhxgLQNJNJqMgxhh8+t00fyubHNRWgDzzWwOAzaflX11m6oksFMDDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:18.664261Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.1746","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e8a98eb423aa253e59d7ccbbff9753eaafb42e9c2cffb04ecabac24d8826451","sha256:0f906aa7330f6f4532696b249378eef9d0792622b72df1e3232de511c17d2d43"],"state_sha256":"d3e434214212167a03b9ece8ed0f45ee14184bd7bd4abbfe9038b9b21eb464a1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JU8dDjA8cR6tOaWt03tPZ/+s2f0GBCsz2zKIVMQXvZNG1g9I4POHZtw38pw5GwuAr93M8IpIqLy+4bwMYNwEAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:25:59.548332Z","bundle_sha256":"6bb49112f5ec6c3dc8ab97d77652eb261d3679c86aad72273ff6c035a809a275"}}