{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:PRP3FEXMBESQRQZE5UDIZ7X5AE","short_pith_number":"pith:PRP3FEXM","schema_version":"1.0","canonical_sha256":"7c5fb292ec092508c324ed068cfefd0138d58d0c9b3724766af313e08647b8dc","source":{"kind":"arxiv","id":"1207.1487","version":1},"attestation_state":"computed","paper":{"title":"Graphene re-knits its holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Konstantin S. Novoselov, Quentin M. Ramasse, Recep Zan, Ursel Bangert","submitted_at":"2012-07-05T23:40:42Z","abstract_excerpt":"Nano-holes, etched under an electron beam at room temperature in singlelayer graphene sheets as a result of their interaction with metalimpurities, are shown to heal spontaneously by filling up with either non-hexagon, graphene-like, or perfect hexagon 2D structures. Scanning transmission electron microscopy was employed to capture the healing process and study atom-by-atom the re-grown structure. A combination of these nano-scale etching and re-knitting processes could lead to new graphene tailoring approaches."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1207.1487","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-07-05T23:40:42Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"5a4be8654fa6c23b6ee2f08496f6595afd85fa5a17b3c52ad5475bad7ad5e144","abstract_canon_sha256":"21cd941acbebfc44846a3bc67a9e127691a3b5d46577bb8a03a34ac4781cf78f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:34.069180Z","signature_b64":"8/VZ05ABvRgBgHfwkPyTNaGJoaWJgEOfqDTxtwxEPIfhwI5ZVKn/GZ94oTbw3auoLB2sItXHoCUU27tKvyy/BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c5fb292ec092508c324ed068cfefd0138d58d0c9b3724766af313e08647b8dc","last_reissued_at":"2026-05-18T01:56:34.068303Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:34.068303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Graphene re-knits its holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Konstantin S. Novoselov, Quentin M. Ramasse, Recep Zan, Ursel Bangert","submitted_at":"2012-07-05T23:40:42Z","abstract_excerpt":"Nano-holes, etched under an electron beam at room temperature in singlelayer graphene sheets as a result of their interaction with metalimpurities, are shown to heal spontaneously by filling up with either non-hexagon, graphene-like, or perfect hexagon 2D structures. Scanning transmission electron microscopy was employed to capture the healing process and study atom-by-atom the re-grown structure. A combination of these nano-scale etching and re-knitting processes could lead to new graphene tailoring approaches."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1487","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1207.1487","created_at":"2026-05-18T01:56:34.068459+00:00"},{"alias_kind":"arxiv_version","alias_value":"1207.1487v1","created_at":"2026-05-18T01:56:34.068459+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1487","created_at":"2026-05-18T01:56:34.068459+00:00"},{"alias_kind":"pith_short_12","alias_value":"PRP3FEXMBESQ","created_at":"2026-05-18T12:27:18.751474+00:00"},{"alias_kind":"pith_short_16","alias_value":"PRP3FEXMBESQRQZE","created_at":"2026-05-18T12:27:18.751474+00:00"},{"alias_kind":"pith_short_8","alias_value":"PRP3FEXM","created_at":"2026-05-18T12:27:18.751474+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE","json":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE.json","graph_json":"https://pith.science/api/pith-number/PRP3FEXMBESQRQZE5UDIZ7X5AE/graph.json","events_json":"https://pith.science/api/pith-number/PRP3FEXMBESQRQZE5UDIZ7X5AE/events.json","paper":"https://pith.science/paper/PRP3FEXM"},"agent_actions":{"view_html":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE","download_json":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE.json","view_paper":"https://pith.science/paper/PRP3FEXM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1207.1487&json=true","fetch_graph":"https://pith.science/api/pith-number/PRP3FEXMBESQRQZE5UDIZ7X5AE/graph.json","fetch_events":"https://pith.science/api/pith-number/PRP3FEXMBESQRQZE5UDIZ7X5AE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE/action/storage_attestation","attest_author":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE/action/author_attestation","sign_citation":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE/action/citation_signature","submit_replication":"https://pith.science/pith/PRP3FEXMBESQRQZE5UDIZ7X5AE/action/replication_record"}},"created_at":"2026-05-18T01:56:34.068459+00:00","updated_at":"2026-05-18T01:56:34.068459+00:00"}