{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:A7UOSGXGVAFTKOI4JC65MUNP6D","short_pith_number":"pith:A7UOSGXG","canonical_record":{"source":{"id":"1105.0500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-05-03T07:32:05Z","cross_cats_sorted":[],"title_canon_sha256":"51a600f89625f8d2cebfe6600e1034953cf7b4d2f9581514a682a8e6bb568314","abstract_canon_sha256":"efd187b182626f79212048440bc91bcb0ccc3239b4325465abf532e8551ee5cd"},"schema_version":"1.0"},"canonical_sha256":"07e8e91ae6a80b35391c48bdd651aff0d26329ffb8bcf55597776708132a030a","source":{"kind":"arxiv","id":"1105.0500","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.0500","created_at":"2026-05-18T04:11:39Z"},{"alias_kind":"arxiv_version","alias_value":"1105.0500v1","created_at":"2026-05-18T04:11:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0500","created_at":"2026-05-18T04:11:39Z"},{"alias_kind":"pith_short_12","alias_value":"A7UOSGXGVAFT","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"A7UOSGXGVAFTKOI4","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"A7UOSGXG","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:A7UOSGXGVAFTKOI4JC65MUNP6D","target":"record","payload":{"canonical_record":{"source":{"id":"1105.0500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-05-03T07:32:05Z","cross_cats_sorted":[],"title_canon_sha256":"51a600f89625f8d2cebfe6600e1034953cf7b4d2f9581514a682a8e6bb568314","abstract_canon_sha256":"efd187b182626f79212048440bc91bcb0ccc3239b4325465abf532e8551ee5cd"},"schema_version":"1.0"},"canonical_sha256":"07e8e91ae6a80b35391c48bdd651aff0d26329ffb8bcf55597776708132a030a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:39.551902Z","signature_b64":"a6G8YlGWo6UaMSqHIehtGipWrtm8r5wq0BBlRJb2Chq0lde1n9e/OW9J9bH0cLxjYbW3Odj6b4VJrnrXUEphDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"07e8e91ae6a80b35391c48bdd651aff0d26329ffb8bcf55597776708132a030a","last_reissued_at":"2026-05-18T04:11:39.551290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:39.551290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.0500","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":"2026-05-18T04:11:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"96HSOE7UGUb62osGMJ/r7hvc1bW48gGPwJZ9nCqzzy4vdry7/CMScWmQi63XEfiGoPfHermwhYF6oeQlFG0WAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T01:59:11.209711Z"},"content_sha256":"921f72c4f2ae2251af25f538f34d767165af83d00012fd15e4ad25bcaaffb32a","schema_version":"1.0","event_id":"sha256:921f72c4f2ae2251af25f538f34d767165af83d00012fd15e4ad25bcaaffb32a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:A7UOSGXGVAFTKOI4JC65MUNP6D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electromechanics of Twisted Graphene Nanoribbons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Pekka Koskinen","submitted_at":"2011-05-03T07:32:05Z","abstract_excerpt":"Graphene nanoribbons are the flimsiest material systems in the world, and they get readily distorted. Distortion by twisting, for one, is important because it couples to ribbon's electronic properties. In this Letter, using simulations with density-functional tight-binding and revised periodic boundary conditions, I show that twisting appears almost equivalent to stretching; electronic structures in a given nanoribbon either upon twisting or upon certain stretching are quantitatively similar. This simple equivalence will provide a valuable guideline for interpreting and designing experiments w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0500","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":"2026-05-18T04:11:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ke9wYd678cHAHcFtqvQomPywotMq/Q4fG0q+wvJh3p8xMvk06dJBq40PV44ZxYt59Qp0VfQbCqCFEggW+Pi5DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T01:59:11.210048Z"},"content_sha256":"c00348f978df2714d18b4610ffedf6d6132ff0a5551f9140f60048d496d2a45a","schema_version":"1.0","event_id":"sha256:c00348f978df2714d18b4610ffedf6d6132ff0a5551f9140f60048d496d2a45a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A7UOSGXGVAFTKOI4JC65MUNP6D/bundle.json","state_url":"https://pith.science/pith/A7UOSGXGVAFTKOI4JC65MUNP6D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A7UOSGXGVAFTKOI4JC65MUNP6D/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":"2026-06-27T01:59:11Z","links":{"resolver":"https://pith.science/pith/A7UOSGXGVAFTKOI4JC65MUNP6D","bundle":"https://pith.science/pith/A7UOSGXGVAFTKOI4JC65MUNP6D/bundle.json","state":"https://pith.science/pith/A7UOSGXGVAFTKOI4JC65MUNP6D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A7UOSGXGVAFTKOI4JC65MUNP6D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:A7UOSGXGVAFTKOI4JC65MUNP6D","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":"efd187b182626f79212048440bc91bcb0ccc3239b4325465abf532e8551ee5cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-05-03T07:32:05Z","title_canon_sha256":"51a600f89625f8d2cebfe6600e1034953cf7b4d2f9581514a682a8e6bb568314"},"schema_version":"1.0","source":{"id":"1105.0500","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.0500","created_at":"2026-05-18T04:11:39Z"},{"alias_kind":"arxiv_version","alias_value":"1105.0500v1","created_at":"2026-05-18T04:11:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0500","created_at":"2026-05-18T04:11:39Z"},{"alias_kind":"pith_short_12","alias_value":"A7UOSGXGVAFT","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"A7UOSGXGVAFTKOI4","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"A7UOSGXG","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:c00348f978df2714d18b4610ffedf6d6132ff0a5551f9140f60048d496d2a45a","target":"graph","created_at":"2026-05-18T04:11:39Z","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":"Graphene nanoribbons are the flimsiest material systems in the world, and they get readily distorted. Distortion by twisting, for one, is important because it couples to ribbon's electronic properties. In this Letter, using simulations with density-functional tight-binding and revised periodic boundary conditions, I show that twisting appears almost equivalent to stretching; electronic structures in a given nanoribbon either upon twisting or upon certain stretching are quantitatively similar. This simple equivalence will provide a valuable guideline for interpreting and designing experiments w","authors_text":"Pekka Koskinen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-05-03T07:32:05Z","title":"Electromechanics of Twisted Graphene Nanoribbons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0500","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":"sha256:921f72c4f2ae2251af25f538f34d767165af83d00012fd15e4ad25bcaaffb32a","target":"record","created_at":"2026-05-18T04:11:39Z","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":"efd187b182626f79212048440bc91bcb0ccc3239b4325465abf532e8551ee5cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-05-03T07:32:05Z","title_canon_sha256":"51a600f89625f8d2cebfe6600e1034953cf7b4d2f9581514a682a8e6bb568314"},"schema_version":"1.0","source":{"id":"1105.0500","kind":"arxiv","version":1}},"canonical_sha256":"07e8e91ae6a80b35391c48bdd651aff0d26329ffb8bcf55597776708132a030a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"07e8e91ae6a80b35391c48bdd651aff0d26329ffb8bcf55597776708132a030a","first_computed_at":"2026-05-18T04:11:39.551290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:11:39.551290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a6G8YlGWo6UaMSqHIehtGipWrtm8r5wq0BBlRJb2Chq0lde1n9e/OW9J9bH0cLxjYbW3Odj6b4VJrnrXUEphDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:11:39.551902Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.0500","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:921f72c4f2ae2251af25f538f34d767165af83d00012fd15e4ad25bcaaffb32a","sha256:c00348f978df2714d18b4610ffedf6d6132ff0a5551f9140f60048d496d2a45a"],"state_sha256":"27f01f5bddbc95c212d2e941009d1c67e838c5e84ad68bdd8aebf3d9e79a6d71"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"50kdud0dYSnUPaaREmxXvLXD3ipdAbfI2NYl4l34Q+4DboBnQ0iHCpcvxleg2mhtvwslmfzNNv6/hkwpFPboBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T01:59:11.211887Z","bundle_sha256":"f6d7f0f740958eba015cc9300e840c679191504433192bc5cf06c49ef8d4107e"}}