{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2UZXP5R24YXQBOUWLMG3REMPW3","short_pith_number":"pith:2UZXP5R2","canonical_record":{"source":{"id":"1307.1815","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-06T21:17:07Z","cross_cats_sorted":[],"title_canon_sha256":"66768b099939265021c899a0cc1377e5ed8bd7d5713614386de21ae903c0fbbb","abstract_canon_sha256":"33b81f6d5e816ef9e15baaa4f751d6de437d8d4386037797949f1d3e2afb1cc2"},"schema_version":"1.0"},"canonical_sha256":"d53377f63ae62f00ba965b0db8918fb6d357e44541afd85d4f1f0a19a456f6ba","source":{"kind":"arxiv","id":"1307.1815","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.1815","created_at":"2026-05-18T00:23:09Z"},{"alias_kind":"arxiv_version","alias_value":"1307.1815v2","created_at":"2026-05-18T00:23:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1815","created_at":"2026-05-18T00:23:09Z"},{"alias_kind":"pith_short_12","alias_value":"2UZXP5R24YXQ","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2UZXP5R24YXQBOUW","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2UZXP5R2","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2UZXP5R24YXQBOUWLMG3REMPW3","target":"record","payload":{"canonical_record":{"source":{"id":"1307.1815","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-06T21:17:07Z","cross_cats_sorted":[],"title_canon_sha256":"66768b099939265021c899a0cc1377e5ed8bd7d5713614386de21ae903c0fbbb","abstract_canon_sha256":"33b81f6d5e816ef9e15baaa4f751d6de437d8d4386037797949f1d3e2afb1cc2"},"schema_version":"1.0"},"canonical_sha256":"d53377f63ae62f00ba965b0db8918fb6d357e44541afd85d4f1f0a19a456f6ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:23:09.904852Z","signature_b64":"sm8gMnlh0baMrFXOCyW6xQ6ytpIH4YWH7nt9MpA0bTNxlO30CbXPfTkm3fjWSCR6ajiqHHSBTYf4Jtl8mvfXBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d53377f63ae62f00ba965b0db8918fb6d357e44541afd85d4f1f0a19a456f6ba","last_reissued_at":"2026-05-18T00:23:09.904133Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:23:09.904133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.1815","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:23:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BjcXfWU/ay4Mx4LLFlsubKrj0GgiPE1OzbPi4Tuex3Yc93MHDUcYnuxvEbvyq7btnCd5HMrhlZA0yQYF0LTIDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:34:12.648999Z"},"content_sha256":"d694356703ec45a594ff41dce15e1a6c7d7614150b0a6e64ead465c1415c5f34","schema_version":"1.0","event_id":"sha256:d694356703ec45a594ff41dce15e1a6c7d7614150b0a6e64ead465c1415c5f34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2UZXP5R24YXQBOUWLMG3REMPW3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Near field enhancement due to the optical response of small nanoparticles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Angela Camacho, Hanz Y. Ramirez, Jefferson Fl\\'orez, Mario Zapata-Herrera","submitted_at":"2013-07-06T21:17:07Z","abstract_excerpt":"In this work we study the strong confinement effects on the electromagnetic response of metallic nanoparticles. We calculate the field enhancement factor for nanospheres of various radii by using optical constants obtained from both classical and quantum approaches and compare their size-dependent features. To evaluate the scattered near-field, we solve the electromagnetic wave equation within a finite element framework. When quantization of electronic states is considered for the input optical functions, a significant blue-shift in the resonance of the enhanced field is observed, in contrast "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1815","kind":"arxiv","version":2},"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":"2026-05-18T00:23:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yh8tvn048z6MLwD5SD2Qm/ay35cOnX9UJpfe3sDDa4aqwjEWBA9/pwxjiEwqQpKflGKHMeqJxsBwqxUsfnk5AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:34:12.649372Z"},"content_sha256":"f9fc025d0bcaaf4542e7e2ec80ac16ee9c8f3537172d94ed86c91977fb70418a","schema_version":"1.0","event_id":"sha256:f9fc025d0bcaaf4542e7e2ec80ac16ee9c8f3537172d94ed86c91977fb70418a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2UZXP5R24YXQBOUWLMG3REMPW3/bundle.json","state_url":"https://pith.science/pith/2UZXP5R24YXQBOUWLMG3REMPW3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2UZXP5R24YXQBOUWLMG3REMPW3/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":"2026-05-30T06:34:12Z","links":{"resolver":"https://pith.science/pith/2UZXP5R24YXQBOUWLMG3REMPW3","bundle":"https://pith.science/pith/2UZXP5R24YXQBOUWLMG3REMPW3/bundle.json","state":"https://pith.science/pith/2UZXP5R24YXQBOUWLMG3REMPW3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2UZXP5R24YXQBOUWLMG3REMPW3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2UZXP5R24YXQBOUWLMG3REMPW3","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":"33b81f6d5e816ef9e15baaa4f751d6de437d8d4386037797949f1d3e2afb1cc2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-06T21:17:07Z","title_canon_sha256":"66768b099939265021c899a0cc1377e5ed8bd7d5713614386de21ae903c0fbbb"},"schema_version":"1.0","source":{"id":"1307.1815","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.1815","created_at":"2026-05-18T00:23:09Z"},{"alias_kind":"arxiv_version","alias_value":"1307.1815v2","created_at":"2026-05-18T00:23:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1815","created_at":"2026-05-18T00:23:09Z"},{"alias_kind":"pith_short_12","alias_value":"2UZXP5R24YXQ","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2UZXP5R24YXQBOUW","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2UZXP5R2","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:f9fc025d0bcaaf4542e7e2ec80ac16ee9c8f3537172d94ed86c91977fb70418a","target":"graph","created_at":"2026-05-18T00:23:09Z","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":"In this work we study the strong confinement effects on the electromagnetic response of metallic nanoparticles. We calculate the field enhancement factor for nanospheres of various radii by using optical constants obtained from both classical and quantum approaches and compare their size-dependent features. To evaluate the scattered near-field, we solve the electromagnetic wave equation within a finite element framework. When quantization of electronic states is considered for the input optical functions, a significant blue-shift in the resonance of the enhanced field is observed, in contrast ","authors_text":"Angela Camacho, Hanz Y. Ramirez, Jefferson Fl\\'orez, Mario Zapata-Herrera","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-06T21:17:07Z","title":"Near field enhancement due to the optical response of small nanoparticles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1815","kind":"arxiv","version":2},"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:d694356703ec45a594ff41dce15e1a6c7d7614150b0a6e64ead465c1415c5f34","target":"record","created_at":"2026-05-18T00:23:09Z","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":"33b81f6d5e816ef9e15baaa4f751d6de437d8d4386037797949f1d3e2afb1cc2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-06T21:17:07Z","title_canon_sha256":"66768b099939265021c899a0cc1377e5ed8bd7d5713614386de21ae903c0fbbb"},"schema_version":"1.0","source":{"id":"1307.1815","kind":"arxiv","version":2}},"canonical_sha256":"d53377f63ae62f00ba965b0db8918fb6d357e44541afd85d4f1f0a19a456f6ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d53377f63ae62f00ba965b0db8918fb6d357e44541afd85d4f1f0a19a456f6ba","first_computed_at":"2026-05-18T00:23:09.904133Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:23:09.904133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sm8gMnlh0baMrFXOCyW6xQ6ytpIH4YWH7nt9MpA0bTNxlO30CbXPfTkm3fjWSCR6ajiqHHSBTYf4Jtl8mvfXBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:23:09.904852Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.1815","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d694356703ec45a594ff41dce15e1a6c7d7614150b0a6e64ead465c1415c5f34","sha256:f9fc025d0bcaaf4542e7e2ec80ac16ee9c8f3537172d94ed86c91977fb70418a"],"state_sha256":"66d33704b2f87f138e3a1ac6ca1cec2f30af537aa3eb1ed6be13806e0d3bf668"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xIOeM+ShnwkXaz5795leRfg3O9nroZQ33+3CA5u4i2st99Yq0UcF5gMHcwB3FnrLQYoIe+gEKFIDJxpDqNq9BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:34:12.651337Z","bundle_sha256":"3cb12f5caa6908f06ef1bda4eae2a2920d99ab04a5267dd37af93aed772c8acd"}}