{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PGAIUDXXV7SS4E6O2MAZEXKC7Z","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":"2f109003c41b2739f7407041cae4022e9a7210fcb5d7f75747808d923f12309f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-28T14:08:17Z","title_canon_sha256":"33c6f30658391f80e56c6659e1987045b09a3530bab0101c1835fcb84bacca3c"},"schema_version":"1.0","source":{"id":"1305.6500","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.6500","created_at":"2026-05-18T03:24:40Z"},{"alias_kind":"arxiv_version","alias_value":"1305.6500v1","created_at":"2026-05-18T03:24:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.6500","created_at":"2026-05-18T03:24:40Z"},{"alias_kind":"pith_short_12","alias_value":"PGAIUDXXV7SS","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"PGAIUDXXV7SS4E6O","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"PGAIUDXX","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:498350a5b759cd1decff3db9bedc478185c69b36ed9e2f7344fdbb392a6ae441","target":"graph","created_at":"2026-05-18T03:24:40Z","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 as a one-atom-thick platform for infrared metamaterial plays an important role in optical science and engineering. Here we study the unique properties of some plasmonic waveguides based on graphene nano-ribbon. It is found that a graphene ribbon of finite width leads to the occurrence of coupled edge mode. The single-mode region of a single freestanding graphene ribbon is identified at a fixed frequency of 30 THz. A low-loss waveguide structure, consisting of a graphene layer, a silica buffer layer and silicon substrate is proposed to reduce the propagation loss and obtain a high figu","authors_text":"S. He, X. Zhang, Y. He","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-28T14:08:17Z","title":"Graphene nano-ribbon waveguides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.6500","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":"sha256:203f781cbe48800ec52a0a5709e61c92c2a02355be3649d612ad4d4feb2e367d","target":"record","created_at":"2026-05-18T03:24:40Z","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":"2f109003c41b2739f7407041cae4022e9a7210fcb5d7f75747808d923f12309f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-28T14:08:17Z","title_canon_sha256":"33c6f30658391f80e56c6659e1987045b09a3530bab0101c1835fcb84bacca3c"},"schema_version":"1.0","source":{"id":"1305.6500","kind":"arxiv","version":1}},"canonical_sha256":"79808a0ef7afe52e13ced301925d42fe7dd0677696c092661739216671bd56d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79808a0ef7afe52e13ced301925d42fe7dd0677696c092661739216671bd56d1","first_computed_at":"2026-05-18T03:24:40.600770Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:24:40.600770Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M1WUUYVJ3xV0M6hdUsB8raSTMxQfRLuSMzbpwUkIOyzpXVymMyrhWNiR420lbihascS8VDXnw2wBnmZ+7RawDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:24:40.601450Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.6500","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:203f781cbe48800ec52a0a5709e61c92c2a02355be3649d612ad4d4feb2e367d","sha256:498350a5b759cd1decff3db9bedc478185c69b36ed9e2f7344fdbb392a6ae441"],"state_sha256":"aae467a4195b132094cd1d0f698d6429a77f957c3df14c7daeeae1b0535a3c14"}