{"paper":{"title":"First-principles calculations of electrical conductivities of edge-modified graphene nanoribbons: strain effect","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"Strain turns nonconductive armchair graphene nanoribbons into conductors across infrared to ultraviolet energies.","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Roderick Melnik, Sanjay Prabhakar","submitted_at":"2026-05-16T12:40:21Z","abstract_excerpt":"We investigate the influence of strain on the electrical properties of graphene nanoribbons that have potential applications in making sensors and other optoelectronic devices. In particular, we chose pristine armchair graphene nanoribbons with 7 zigzag edges (7aGNRsH), boron doped armchair graphene nanoribbons with 7 zigzag edges (7aGNRsH-B) and armchair graphene nanoribbons with 7 zigzag edges that have one carbon atom vacancy (7aGNRsH-V). Based on first-principles calculations, results show that pristine unstrained 7aGNRsH is electrically nonconductive but turns to be electrically conductiv"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Pristine unstrained 7aGNRsH is electrically nonconductive but turns to be electrically conductive in a wide range of energy spectrum, e.g., from IR to visible to UV, due to the application of strain engineering.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The first-principles method (standard DFT) and chosen supercell models with specific edge modifications accurately capture real electronic transport and Berry curvature under applied strain without significant errors from functional choice, k-point sampling, or neglected many-body effects.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Strain engineering converts semiconducting 7aGNRsH to conductive across IR-visible-UV while metallic 7aGNRsH-B and 7aGNRsH-V retain non-zero conductivity; Berry curvature localizes differently under strain.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Strain turns nonconductive armchair graphene nanoribbons into conductors across infrared to ultraviolet energies.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"5af459869c93bd3c43a5f4a5a6000e92ea2395ec3997a8e711849f95f04583c7"},"source":{"id":"2605.16965","kind":"arxiv","version":1},"verdict":{"id":"9d5bb8ab-2ea7-4398-9810-5ef8d3440974","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T20:27:25.957273Z","strongest_claim":"Pristine unstrained 7aGNRsH is electrically nonconductive but turns to be electrically conductive in a wide range of energy spectrum, e.g., from IR to visible to UV, due to the application of strain engineering.","one_line_summary":"Strain engineering converts semiconducting 7aGNRsH to conductive across IR-visible-UV while metallic 7aGNRsH-B and 7aGNRsH-V retain non-zero conductivity; Berry curvature localizes differently under strain.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The first-principles method (standard DFT) and chosen supercell models with specific edge modifications accurately capture real electronic transport and Berry curvature under applied strain without significant errors from functional choice, k-point sampling, or neglected many-body effects.","pith_extraction_headline":"Strain turns nonconductive armchair graphene nanoribbons into conductors across infrared to ultraviolet energies."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.16965/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T21:01:19.071198Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T20:40:51.160440Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"cited_work_retraction","ran_at":"2026-05-19T19:51:57.731896Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"citation_quote_validity","ran_at":"2026-05-19T19:50:12.038623Z","status":"skipped","version":"0.1.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T18:41:56.227290Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T18:33:26.312950Z","status":"skipped","version":"1.0.0","findings_count":0}],"snapshot_sha256":"631ee865668ee28f7329627febc8fec3c384c6af1773313475230e4117fbe476"},"references":{"count":67,"sample":[{"doi":"","year":2020,"title":"X. 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Hauschild, M. P. Zaletel, N. Bultinck, et al. , Strain-induced quantum phase tran- sitions in magic-angle graphene, Physical review letters 127, 027601 (2021)","work_id":"9a9581da-ea35-4191-857b-3b5041792c2d","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2007,"title":"A. K. Geim and K. S. Novoselov, The rise of graphene, Nat. Mater. 6, 183 (2007)","work_id":"7a2dfafb-438b-4a79-a3ce-d475cda86cc1","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":67,"snapshot_sha256":"2982e3138d6820122f5ae61f35cbc895c8d95ccea2691f5f9ff95ee075ee89a1","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"a69c26d955f61f54952e04fc6bbe3f9b299de00c0c36d4d1b4f857d86bee6b6a"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}