{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:QK546O5XGRX6GAHWVEWYUM3RD6","short_pith_number":"pith:QK546O5X","schema_version":"1.0","canonical_sha256":"82bbcf3bb7346fe300f6a92d8a33711f972d718f708a7c40e465ccea9dc6f17e","source":{"kind":"arxiv","id":"1210.8372","version":1},"attestation_state":"computed","paper":{"title":"Electronic Strengthening of Graphene by Charge Doping","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chen Si, Feng Liu, Wenhui Duan, Zheng Liu","submitted_at":"2012-10-31T15:47:14Z","abstract_excerpt":"Graphene is known as the strongest 2D material in nature, yet we show that moderate charge doping of either electrons or holes can further enhance its ideal strength by up to ~17%, based on first principles calculations. This unusual electronic enhancement, versus conventional structural enhancement, of material's strength is achieved by an intriguing physical mechanism of charge doping counteracting on strain induced enhancement of Kohn anomaly, which leads to an overall stiffening of zone boundary K1 phonon mode whose softening under strain is responsible for graphene failure. Electrons and "},"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":"1210.8372","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-10-31T15:47:14Z","cross_cats_sorted":[],"title_canon_sha256":"9c8596a38e6b596ff362b1de62647c6d8ac1c3b987e3799b68d03317a39c0cf3","abstract_canon_sha256":"f8f4fe3b240d7e8b924968d00da4b6cd6cf9785aaa2f2b54ae2d09ca76f43e15"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:28.753526Z","signature_b64":"6sLpYv4Tl/XIRlvnsV0rOvBsv+/5D6FtAyU3CN29OUQOpa2g57c6LxN2ItnqGQ6/jnlyDBxtu55jADGko/5DBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82bbcf3bb7346fe300f6a92d8a33711f972d718f708a7c40e465ccea9dc6f17e","last_reissued_at":"2026-05-18T01:53:28.752790Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:28.752790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Electronic Strengthening of Graphene by Charge Doping","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chen Si, Feng Liu, Wenhui Duan, Zheng Liu","submitted_at":"2012-10-31T15:47:14Z","abstract_excerpt":"Graphene is known as the strongest 2D material in nature, yet we show that moderate charge doping of either electrons or holes can further enhance its ideal strength by up to ~17%, based on first principles calculations. This unusual electronic enhancement, versus conventional structural enhancement, of material's strength is achieved by an intriguing physical mechanism of charge doping counteracting on strain induced enhancement of Kohn anomaly, which leads to an overall stiffening of zone boundary K1 phonon mode whose softening under strain is responsible for graphene failure. Electrons and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.8372","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":"1210.8372","created_at":"2026-05-18T01:53:28.752901+00:00"},{"alias_kind":"arxiv_version","alias_value":"1210.8372v1","created_at":"2026-05-18T01:53:28.752901+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.8372","created_at":"2026-05-18T01:53:28.752901+00:00"},{"alias_kind":"pith_short_12","alias_value":"QK546O5XGRX6","created_at":"2026-05-18T12:27:18.751474+00:00"},{"alias_kind":"pith_short_16","alias_value":"QK546O5XGRX6GAHW","created_at":"2026-05-18T12:27:18.751474+00:00"},{"alias_kind":"pith_short_8","alias_value":"QK546O5X","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/QK546O5XGRX6GAHWVEWYUM3RD6","json":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6.json","graph_json":"https://pith.science/api/pith-number/QK546O5XGRX6GAHWVEWYUM3RD6/graph.json","events_json":"https://pith.science/api/pith-number/QK546O5XGRX6GAHWVEWYUM3RD6/events.json","paper":"https://pith.science/paper/QK546O5X"},"agent_actions":{"view_html":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6","download_json":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6.json","view_paper":"https://pith.science/paper/QK546O5X","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1210.8372&json=true","fetch_graph":"https://pith.science/api/pith-number/QK546O5XGRX6GAHWVEWYUM3RD6/graph.json","fetch_events":"https://pith.science/api/pith-number/QK546O5XGRX6GAHWVEWYUM3RD6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6/action/storage_attestation","attest_author":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6/action/author_attestation","sign_citation":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6/action/citation_signature","submit_replication":"https://pith.science/pith/QK546O5XGRX6GAHWVEWYUM3RD6/action/replication_record"}},"created_at":"2026-05-18T01:53:28.752901+00:00","updated_at":"2026-05-18T01:53:28.752901+00:00"}