{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:W5UFTGUVWPIPRHSB4FPCEOHGDD","short_pith_number":"pith:W5UFTGUV","canonical_record":{"source":{"id":"1001.3785","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-21T11:54:39Z","cross_cats_sorted":[],"title_canon_sha256":"920c9e495bfece09b2e7360496db0e98f9d5f55529a4a191f8d701ad6c9832da","abstract_canon_sha256":"6dc48962d61b43f10578bc8e5c3890bef9c293241b2d060126c1ef65bee03181"},"schema_version":"1.0"},"canonical_sha256":"b768599a95b3d0f89e41e15e2238e618e9898be88e8f94b28908e68f94055fb0","source":{"kind":"arxiv","id":"1001.3785","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.3785","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"arxiv_version","alias_value":"1001.3785v1","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.3785","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"pith_short_12","alias_value":"W5UFTGUVWPIP","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"W5UFTGUVWPIPRHSB","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"W5UFTGUV","created_at":"2026-05-18T12:26:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:W5UFTGUVWPIPRHSB4FPCEOHGDD","target":"record","payload":{"canonical_record":{"source":{"id":"1001.3785","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-21T11:54:39Z","cross_cats_sorted":[],"title_canon_sha256":"920c9e495bfece09b2e7360496db0e98f9d5f55529a4a191f8d701ad6c9832da","abstract_canon_sha256":"6dc48962d61b43f10578bc8e5c3890bef9c293241b2d060126c1ef65bee03181"},"schema_version":"1.0"},"canonical_sha256":"b768599a95b3d0f89e41e15e2238e618e9898be88e8f94b28908e68f94055fb0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:09:31.529560Z","signature_b64":"x5O5gHkHZrL5FWMVygtP79ujI9tDqgOqCzo7AZrWVnCG/2hYKLn1wo4YJpgY0jFUNoRAVP+RCRJn1TK8IGgWCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b768599a95b3d0f89e41e15e2238e618e9898be88e8f94b28908e68f94055fb0","last_reissued_at":"2026-05-18T02:09:31.528756Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:09:31.528756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.3785","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:09:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fti2tExBGBBg2lRedTrP+IFrf4iruaBlefp6BsRJLwS2llBSswqGF5OQ8Hs9jS8fXG4/96or3st2ZdSjflvlAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T23:22:33.384221Z"},"content_sha256":"17c13eba1aa5a9e55dcc55ed0ea046a46d2396492eb6eb4d94b3e3f172a2224a","schema_version":"1.0","event_id":"sha256:17c13eba1aa5a9e55dcc55ed0ea046a46d2396492eb6eb4d94b3e3f172a2224a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:W5UFTGUVWPIPRHSB4FPCEOHGDD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Concave Plasmonic Particles: Broad-Band Geometrical Tunability in the Near Infra-Red","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Meir Orenstein, Nikolai Berkovitch, Pavel Ginzburg","submitted_at":"2010-01-21T11:54:39Z","abstract_excerpt":"Optical resonances spanning the Near and Short Infra-Red spectral regime were exhibited experimentally by arrays of plasmonic nano-particles with concave cross-section. The concavity of the particle was shown to be the key ingredient for enabling the broad band tunability of the resonance frequency, even for particles with dimensional aspect ratios of order unity. The atypical flexibility of setting the resonance wavelength is shown to stem from a unique interplay of local geometry with surface charge distributions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.3785","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:09:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/hphslQy2N9Ewa+lRE3UgZ38LhPExWcMU734YWNORDfCOu8XD3jxfp/zu5ADDd9UcLkMDLtDfCEDP+YqUaJVBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T23:22:33.384932Z"},"content_sha256":"277af51b446f1d6320d6068ffdbed040ab3b0d66d8cf0456b104b32378cd2476","schema_version":"1.0","event_id":"sha256:277af51b446f1d6320d6068ffdbed040ab3b0d66d8cf0456b104b32378cd2476"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W5UFTGUVWPIPRHSB4FPCEOHGDD/bundle.json","state_url":"https://pith.science/pith/W5UFTGUVWPIPRHSB4FPCEOHGDD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W5UFTGUVWPIPRHSB4FPCEOHGDD/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-19T23:22:33Z","links":{"resolver":"https://pith.science/pith/W5UFTGUVWPIPRHSB4FPCEOHGDD","bundle":"https://pith.science/pith/W5UFTGUVWPIPRHSB4FPCEOHGDD/bundle.json","state":"https://pith.science/pith/W5UFTGUVWPIPRHSB4FPCEOHGDD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W5UFTGUVWPIPRHSB4FPCEOHGDD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:W5UFTGUVWPIPRHSB4FPCEOHGDD","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":"6dc48962d61b43f10578bc8e5c3890bef9c293241b2d060126c1ef65bee03181","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-21T11:54:39Z","title_canon_sha256":"920c9e495bfece09b2e7360496db0e98f9d5f55529a4a191f8d701ad6c9832da"},"schema_version":"1.0","source":{"id":"1001.3785","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.3785","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"arxiv_version","alias_value":"1001.3785v1","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.3785","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"pith_short_12","alias_value":"W5UFTGUVWPIP","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"W5UFTGUVWPIPRHSB","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"W5UFTGUV","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:277af51b446f1d6320d6068ffdbed040ab3b0d66d8cf0456b104b32378cd2476","target":"graph","created_at":"2026-05-18T02:09:31Z","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":"Optical resonances spanning the Near and Short Infra-Red spectral regime were exhibited experimentally by arrays of plasmonic nano-particles with concave cross-section. The concavity of the particle was shown to be the key ingredient for enabling the broad band tunability of the resonance frequency, even for particles with dimensional aspect ratios of order unity. The atypical flexibility of setting the resonance wavelength is shown to stem from a unique interplay of local geometry with surface charge distributions.","authors_text":"Meir Orenstein, Nikolai Berkovitch, Pavel Ginzburg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-21T11:54:39Z","title":"Concave Plasmonic Particles: Broad-Band Geometrical Tunability in the Near Infra-Red"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.3785","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":"sha256:17c13eba1aa5a9e55dcc55ed0ea046a46d2396492eb6eb4d94b3e3f172a2224a","target":"record","created_at":"2026-05-18T02:09:31Z","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":"6dc48962d61b43f10578bc8e5c3890bef9c293241b2d060126c1ef65bee03181","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-21T11:54:39Z","title_canon_sha256":"920c9e495bfece09b2e7360496db0e98f9d5f55529a4a191f8d701ad6c9832da"},"schema_version":"1.0","source":{"id":"1001.3785","kind":"arxiv","version":1}},"canonical_sha256":"b768599a95b3d0f89e41e15e2238e618e9898be88e8f94b28908e68f94055fb0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b768599a95b3d0f89e41e15e2238e618e9898be88e8f94b28908e68f94055fb0","first_computed_at":"2026-05-18T02:09:31.528756Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:09:31.528756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x5O5gHkHZrL5FWMVygtP79ujI9tDqgOqCzo7AZrWVnCG/2hYKLn1wo4YJpgY0jFUNoRAVP+RCRJn1TK8IGgWCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:09:31.529560Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.3785","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17c13eba1aa5a9e55dcc55ed0ea046a46d2396492eb6eb4d94b3e3f172a2224a","sha256:277af51b446f1d6320d6068ffdbed040ab3b0d66d8cf0456b104b32378cd2476"],"state_sha256":"bd59c8907021d4d19b3ee3aa8e80dcccb0436e0b4cbcf40b6c461bed89d696b6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WrnfRADTr3TC9DSOpV/hIXirDQcmr0BDRlU64PwNBzNc9VyTuxyjzuy78l4Kp9Zkk88eORb88xcvMEMlEljsAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T23:22:33.388747Z","bundle_sha256":"9f9351a55344139f35d44c86826361ef264ba071bb409c0b785659a6eb42c3f0"}}