{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:CRSRD3QGQIADV63QKSSAN36UGT","short_pith_number":"pith:CRSRD3QG","schema_version":"1.0","canonical_sha256":"146511ee0682003afb7054a406efd434fb09c94642d68301dece619d3f5eea47","source":{"kind":"arxiv","id":"0904.2352","version":1},"attestation_state":"computed","paper":{"title":"Observations of zero-order bandgaps in negative-index photonic crystal superlattices at the near-infrared","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"C.W.Wong, D.L.Kwong, J.F.McMillan, M.B.Yu, N.C.Panoiu, R.Chatterjee, R.M.Osgood, S.Kocaman","submitted_at":"2009-04-15T16:31:07Z","abstract_excerpt":"We present the first observations of zero-n bandgaps in photonic crystal superlattices consisting of alternating stacks of negative index photonic crystals and positive index dielectric materials in the near-infrared. Guided by ab initio three-dimensional numerical simulations, the fabricated nanostructured superlattices demonstrate the presence of zero-order gaps in remarkable agreement with theoretical predictions across a range of different superlattice periods and unit cell variations. These volume-averaged zero-index superlattice structures present a new type of photonic band gap, with po"},"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":"0904.2352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2009-04-15T16:31:07Z","cross_cats_sorted":[],"title_canon_sha256":"d1f5d874bcb66e188f9c3eace4902bdbab3859a34e191c4308d3a605006d7c91","abstract_canon_sha256":"98f9d3ccc20f5c9cf964dbc81980487a299a7a99eaaddc9d247bd3ac3b3dc214"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:00.117106Z","signature_b64":"3aKwO08aHKotIaX1vxZK1DYBMGeg/rNrEnnhGA6IfeDQlVldDgvpZkilJMQs9hR5q5IqRy/vWjeiv+eYHJwBCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"146511ee0682003afb7054a406efd434fb09c94642d68301dece619d3f5eea47","last_reissued_at":"2026-05-18T02:14:00.116261Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:00.116261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observations of zero-order bandgaps in negative-index photonic crystal superlattices at the near-infrared","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"C.W.Wong, D.L.Kwong, J.F.McMillan, M.B.Yu, N.C.Panoiu, R.Chatterjee, R.M.Osgood, S.Kocaman","submitted_at":"2009-04-15T16:31:07Z","abstract_excerpt":"We present the first observations of zero-n bandgaps in photonic crystal superlattices consisting of alternating stacks of negative index photonic crystals and positive index dielectric materials in the near-infrared. Guided by ab initio three-dimensional numerical simulations, the fabricated nanostructured superlattices demonstrate the presence of zero-order gaps in remarkable agreement with theoretical predictions across a range of different superlattice periods and unit cell variations. These volume-averaged zero-index superlattice structures present a new type of photonic band gap, with po"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.2352","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":"0904.2352","created_at":"2026-05-18T02:14:00.116421+00:00"},{"alias_kind":"arxiv_version","alias_value":"0904.2352v1","created_at":"2026-05-18T02:14:00.116421+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.2352","created_at":"2026-05-18T02:14:00.116421+00:00"},{"alias_kind":"pith_short_12","alias_value":"CRSRD3QGQIAD","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_16","alias_value":"CRSRD3QGQIADV63Q","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_8","alias_value":"CRSRD3QG","created_at":"2026-05-18T12:25:59.703012+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/CRSRD3QGQIADV63QKSSAN36UGT","json":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT.json","graph_json":"https://pith.science/api/pith-number/CRSRD3QGQIADV63QKSSAN36UGT/graph.json","events_json":"https://pith.science/api/pith-number/CRSRD3QGQIADV63QKSSAN36UGT/events.json","paper":"https://pith.science/paper/CRSRD3QG"},"agent_actions":{"view_html":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT","download_json":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT.json","view_paper":"https://pith.science/paper/CRSRD3QG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0904.2352&json=true","fetch_graph":"https://pith.science/api/pith-number/CRSRD3QGQIADV63QKSSAN36UGT/graph.json","fetch_events":"https://pith.science/api/pith-number/CRSRD3QGQIADV63QKSSAN36UGT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT/action/storage_attestation","attest_author":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT/action/author_attestation","sign_citation":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT/action/citation_signature","submit_replication":"https://pith.science/pith/CRSRD3QGQIADV63QKSSAN36UGT/action/replication_record"}},"created_at":"2026-05-18T02:14:00.116421+00:00","updated_at":"2026-05-18T02:14:00.116421+00:00"}