{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:4XQ462TCWVSYKYW3V643ALW7MC","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":"86efcb3a6dd1e31778b2379b43aebfdc8f5cb39ee09e842137e87217c9d993f7","cross_cats_sorted":["cond-mat.soft","cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-09-23T15:10:50Z","title_canon_sha256":"5d710ad081a0f39f478257b2d1c8767bf72184cd24325899fd37db532774ae23"},"schema_version":"1.0","source":{"id":"1209.5073","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.5073","created_at":"2026-05-18T03:44:59Z"},{"alias_kind":"arxiv_version","alias_value":"1209.5073v1","created_at":"2026-05-18T03:44:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.5073","created_at":"2026-05-18T03:44:59Z"},{"alias_kind":"pith_short_12","alias_value":"4XQ462TCWVSY","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4XQ462TCWVSYKYW3","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4XQ462TC","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:48d8a6f0c8b5bd80ef02eb8e9be48f1eea6bb781eee05d4f7df496faa929128a","target":"graph","created_at":"2026-05-18T03:44:59Z","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":"Heller et. Al. (Science 311, 508 (2006)) demonstrated the first DNA-CN optical sensor by wrapping a piece of double-stranded DNA around the surface of single-walled carbon nanotubes (CN). This new type of optical device can be placed inside living cells and detect trace amounts of harmful contaminants by means of near infrared light. Using a simple exciton theory in nanostructures and the phenomena of B-Z structural phase transition of DNA, we investigate the working principle of this new class of optical biosensor from DNA by using the nanostructure surface as a sensor to detect the property ","authors_text":"Anh D. Phan, Dustin A. Tracy, N. A. Viet","cross_cats":["cond-mat.soft","cond-mat.stat-mech"],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-09-23T15:10:50Z","title":"A model of an optical biosensor detecting environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.5073","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":"sha256:471cc5cd7a206037979ca1148f8253a597e0a3f864868206ca2c1fa19d7cec55","target":"record","created_at":"2026-05-18T03:44:59Z","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":"86efcb3a6dd1e31778b2379b43aebfdc8f5cb39ee09e842137e87217c9d993f7","cross_cats_sorted":["cond-mat.soft","cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-09-23T15:10:50Z","title_canon_sha256":"5d710ad081a0f39f478257b2d1c8767bf72184cd24325899fd37db532774ae23"},"schema_version":"1.0","source":{"id":"1209.5073","kind":"arxiv","version":1}},"canonical_sha256":"e5e1cf6a62b5658562dbafb9b02edf60a4b9b04c686ad2cd54277ce55e1c6a7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5e1cf6a62b5658562dbafb9b02edf60a4b9b04c686ad2cd54277ce55e1c6a7d","first_computed_at":"2026-05-18T03:44:59.351350Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:44:59.351350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9bJaQU9Nak2drIMbiOPGZ95KYAPnKbBNx//27fqj3wnP3+dPaJet4gyEd/UcHbioAlNoUUZUJv/S6L+Vb8PVDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:44:59.352120Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.5073","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:471cc5cd7a206037979ca1148f8253a597e0a3f864868206ca2c1fa19d7cec55","sha256:48d8a6f0c8b5bd80ef02eb8e9be48f1eea6bb781eee05d4f7df496faa929128a"],"state_sha256":"0f04901f4115da5a7e62a99630911d806f3d409ae6015d90ed9d91b3268f63a9"}