{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:RHC5IEPJVI4DDGWVM3XKWE3RKY","short_pith_number":"pith:RHC5IEPJ","schema_version":"1.0","canonical_sha256":"89c5d411e9aa38319ad566eeab13715638c23d5f67a52677d763278248c00797","source":{"kind":"arxiv","id":"1805.01192","version":1},"attestation_state":"computed","paper":{"title":"Early stage of CVD graphene synthesis on Ge(001) substrate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. M. Scaparro, A. Notargiacomo, A. Sgarlata, C. Coletti, L. Di Gaspare, L. Fazi, M. de Seta, M. Fanfoni, V. Miseikis","submitted_at":"2018-05-03T09:53:00Z","abstract_excerpt":"In this work we shed light on the early stage of the chemical vapor deposition of graphene on Ge(001) surfaces. By a combined use of microRaman and x-ray photoelectron spectroscopies, and scanning tunneling microscopy and spectroscopy, we were able to individuate a carbon precursor phase to graphene nucleation which coexists with small graphene domains. This precursor phase is made of C aggregates with different size, shape and local ordering which are not fully sp2 hybridized. In some atomic size regions these aggregates show a linear arrangement of atoms as well as the first signature of the"},"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":"1805.01192","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-03T09:53:00Z","cross_cats_sorted":[],"title_canon_sha256":"f555a84b409a853f8638014b9348f721235be1263afcf60d377795d5650d83b4","abstract_canon_sha256":"ec37951c6bab86da03ba84ccfe10cd6a2f6be79e1b1207aa6a96b21f072ce44c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:52.269036Z","signature_b64":"MAnUHKc7rImvRty4adCE7RWOPxGuasCtPsjNY34MT/MFzhAfVsk6ri3w+CIYF/4S+A9DqJJmpGh1kCYFoiv8Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"89c5d411e9aa38319ad566eeab13715638c23d5f67a52677d763278248c00797","last_reissued_at":"2026-05-18T00:16:52.268402Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:52.268402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Early stage of CVD graphene synthesis on Ge(001) substrate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. M. Scaparro, A. Notargiacomo, A. Sgarlata, C. Coletti, L. Di Gaspare, L. Fazi, M. de Seta, M. Fanfoni, V. Miseikis","submitted_at":"2018-05-03T09:53:00Z","abstract_excerpt":"In this work we shed light on the early stage of the chemical vapor deposition of graphene on Ge(001) surfaces. By a combined use of microRaman and x-ray photoelectron spectroscopies, and scanning tunneling microscopy and spectroscopy, we were able to individuate a carbon precursor phase to graphene nucleation which coexists with small graphene domains. This precursor phase is made of C aggregates with different size, shape and local ordering which are not fully sp2 hybridized. In some atomic size regions these aggregates show a linear arrangement of atoms as well as the first signature of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.01192","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":"1805.01192","created_at":"2026-05-18T00:16:52.268482+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.01192v1","created_at":"2026-05-18T00:16:52.268482+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.01192","created_at":"2026-05-18T00:16:52.268482+00:00"},{"alias_kind":"pith_short_12","alias_value":"RHC5IEPJVI4D","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_16","alias_value":"RHC5IEPJVI4DDGWV","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_8","alias_value":"RHC5IEPJ","created_at":"2026-05-18T12:32:50.500415+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/RHC5IEPJVI4DDGWVM3XKWE3RKY","json":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY.json","graph_json":"https://pith.science/api/pith-number/RHC5IEPJVI4DDGWVM3XKWE3RKY/graph.json","events_json":"https://pith.science/api/pith-number/RHC5IEPJVI4DDGWVM3XKWE3RKY/events.json","paper":"https://pith.science/paper/RHC5IEPJ"},"agent_actions":{"view_html":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY","download_json":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY.json","view_paper":"https://pith.science/paper/RHC5IEPJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.01192&json=true","fetch_graph":"https://pith.science/api/pith-number/RHC5IEPJVI4DDGWVM3XKWE3RKY/graph.json","fetch_events":"https://pith.science/api/pith-number/RHC5IEPJVI4DDGWVM3XKWE3RKY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY/action/storage_attestation","attest_author":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY/action/author_attestation","sign_citation":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY/action/citation_signature","submit_replication":"https://pith.science/pith/RHC5IEPJVI4DDGWVM3XKWE3RKY/action/replication_record"}},"created_at":"2026-05-18T00:16:52.268482+00:00","updated_at":"2026-05-18T00:16:52.268482+00:00"}