{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:Q3WHVR2C5B7Q34S5GVKYWS36US","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":"983729a0916751d3b49071cd682bec39abd45f6774dd6abaf0eece9beaf2fda7","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-07T18:57:34Z","title_canon_sha256":"c67894761367b8bfdc0b1f69399a943151764ab498841019959c4e3ff2808d1e"},"schema_version":"1.0","source":{"id":"1402.1733","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1733","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1733v1","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1733","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"pith_short_12","alias_value":"Q3WHVR2C5B7Q","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"Q3WHVR2C5B7Q34S5","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"Q3WHVR2C","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:7e4685a8f0fe5c051894f2facfdb034eb106bf30e4b3eb90af4cc44221a51541","target":"graph","created_at":"2026-05-18T02:59:46Z","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":"We demonstrate gold coated polymer surface enhanced Raman scattering (SERS) substrates with a pair of complementary structures--positive and inverted pyramids array structures fabricated by multiple-step molding and replication process. The uniform SERS enhancement factors over the entire device surfaces were measured as 7.2 X 10^4 for positive pyramids substrate while 1.6 X 10^6 for inverted pyramids substrate with Rhodamine 6G as the target analyte. Based on the optical reflection measurement and FDTD simulation result, the enhancement factor difference is attributed to plasmon resonance mat","authors_text":"Logan Liu, Zhida Xu","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-07T18:57:34Z","title":"Nanoreplicated positive and inverted sub-micron polymer pyramids array for surface enhanced Raman spectroscopy (SERS)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1733","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":"sha256:0e933f19f598bf2951b80a996d72404de99b8f154a2f3d4ab7f2fc5211ba44d0","target":"record","created_at":"2026-05-18T02:59:46Z","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":"983729a0916751d3b49071cd682bec39abd45f6774dd6abaf0eece9beaf2fda7","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-07T18:57:34Z","title_canon_sha256":"c67894761367b8bfdc0b1f69399a943151764ab498841019959c4e3ff2808d1e"},"schema_version":"1.0","source":{"id":"1402.1733","kind":"arxiv","version":1}},"canonical_sha256":"86ec7ac742e87f0df25d35558b4b7ea48e415e23c9242ba7f63ec586204ef9a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86ec7ac742e87f0df25d35558b4b7ea48e415e23c9242ba7f63ec586204ef9a4","first_computed_at":"2026-05-18T02:59:46.059387Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:59:46.059387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C8pTDW03cNmXYiO1/HRVbjbOqDr3592+ipOx5idPlp+8vKhKuDHclDq808/ImcK/ziQSghtdyXecIlwmh941CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:59:46.060213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.1733","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e933f19f598bf2951b80a996d72404de99b8f154a2f3d4ab7f2fc5211ba44d0","sha256:7e4685a8f0fe5c051894f2facfdb034eb106bf30e4b3eb90af4cc44221a51541"],"state_sha256":"22cf59befdb0ed6a0a6dc6ef0fad1ea44c68a5393173cc157f2e3be58939090a"}