{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:TJO4FFWDMBL6LQUVPJVSJY7QXZ","short_pith_number":"pith:TJO4FFWD","canonical_record":{"source":{"id":"1109.2253","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-09-10T19:19:55Z","cross_cats_sorted":[],"title_canon_sha256":"3a447dbda5613994ac46fc2b32dc7691b3f32106ec6935ed316cc99ed8606292","abstract_canon_sha256":"b09576721b07e8d18af85acb190e021309a6797637e740885b8668f34d0e42e1"},"schema_version":"1.0"},"canonical_sha256":"9a5dc296c36057e5c2957a6b24e3f0be5b2055e652b788cb3aa877bfc7f7607f","source":{"kind":"arxiv","id":"1109.2253","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.2253","created_at":"2026-05-18T04:05:47Z"},{"alias_kind":"arxiv_version","alias_value":"1109.2253v1","created_at":"2026-05-18T04:05:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.2253","created_at":"2026-05-18T04:05:47Z"},{"alias_kind":"pith_short_12","alias_value":"TJO4FFWDMBL6","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"TJO4FFWDMBL6LQUV","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"TJO4FFWD","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:TJO4FFWDMBL6LQUVPJVSJY7QXZ","target":"record","payload":{"canonical_record":{"source":{"id":"1109.2253","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-09-10T19:19:55Z","cross_cats_sorted":[],"title_canon_sha256":"3a447dbda5613994ac46fc2b32dc7691b3f32106ec6935ed316cc99ed8606292","abstract_canon_sha256":"b09576721b07e8d18af85acb190e021309a6797637e740885b8668f34d0e42e1"},"schema_version":"1.0"},"canonical_sha256":"9a5dc296c36057e5c2957a6b24e3f0be5b2055e652b788cb3aa877bfc7f7607f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:05:47.049032Z","signature_b64":"KaJtFstCOxaSRcfvoIfBwnrMtvjkH/c6hprvgnR7Jtzp8U0wddyUFvvwJqGwwV1joRe9KkWkI0TSvbZp6xtcBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a5dc296c36057e5c2957a6b24e3f0be5b2055e652b788cb3aa877bfc7f7607f","last_reissued_at":"2026-05-18T04:05:47.048619Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:05:47.048619Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.2253","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":"2026-05-18T04:05:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QKR/IALv6liQ6AKYv9sAxvKUIa4zv7L9sWiexbX2mKM7eaoRtNrDtAUOknbNb0R/DcVTJJf4iEBf+kdEFoLZCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:55:29.417276Z"},"content_sha256":"250b7e1ce8b9106be513f781c1fc18028759734570d9dc1cdd9584c8b7527a76","schema_version":"1.0","event_id":"sha256:250b7e1ce8b9106be513f781c1fc18028759734570d9dc1cdd9584c8b7527a76"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:TJO4FFWDMBL6LQUVPJVSJY7QXZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Role of ambient air on photoluminescence and electrical conductivity of assembly of ZnO Nanoparticles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. Bahadur, D. Das, Manoranjan Ghosh, R.K. Vatsa, R. S. Ningthoujam, S.C. Gadkari, S. K. Gupta, V. Nataraju","submitted_at":"2011-09-10T19:19:55Z","abstract_excerpt":"Effect of ambient gases on photoluminescence (PL) and electrical conductivity of films prepared using ZnO nanoparticles (NPs) have been investigated. It is observed that NPs of size below 20 nm kept inside a chamber exhibit complete reduction in their visible PL when oxygen partial pressure of the surrounding gases is decreased by evacuation. However the visible PL from ZnO NPs is insensitive to other major gases present in the ambient air. The rate of change of PL intensity with pressure is inversely proportional to the ambient air pressure and increases when particle size decreases due to th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.2253","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":"2026-05-18T04:05:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4dHAv9/m5hVKX0TeQNzQg2f0iDzuvrhu0JrZ6RiGsvEE3YQ83e2J2y+I1mHfbniCegZ5/rJZSGQ4J3uM7aGPBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:55:29.417645Z"},"content_sha256":"47ac4bfe10b5c98372794f644af6617b060e4b5e09289482363bd6becdf20444","schema_version":"1.0","event_id":"sha256:47ac4bfe10b5c98372794f644af6617b060e4b5e09289482363bd6becdf20444"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TJO4FFWDMBL6LQUVPJVSJY7QXZ/bundle.json","state_url":"https://pith.science/pith/TJO4FFWDMBL6LQUVPJVSJY7QXZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TJO4FFWDMBL6LQUVPJVSJY7QXZ/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":"2026-05-26T11:55:29Z","links":{"resolver":"https://pith.science/pith/TJO4FFWDMBL6LQUVPJVSJY7QXZ","bundle":"https://pith.science/pith/TJO4FFWDMBL6LQUVPJVSJY7QXZ/bundle.json","state":"https://pith.science/pith/TJO4FFWDMBL6LQUVPJVSJY7QXZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TJO4FFWDMBL6LQUVPJVSJY7QXZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:TJO4FFWDMBL6LQUVPJVSJY7QXZ","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":"b09576721b07e8d18af85acb190e021309a6797637e740885b8668f34d0e42e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-09-10T19:19:55Z","title_canon_sha256":"3a447dbda5613994ac46fc2b32dc7691b3f32106ec6935ed316cc99ed8606292"},"schema_version":"1.0","source":{"id":"1109.2253","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.2253","created_at":"2026-05-18T04:05:47Z"},{"alias_kind":"arxiv_version","alias_value":"1109.2253v1","created_at":"2026-05-18T04:05:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.2253","created_at":"2026-05-18T04:05:47Z"},{"alias_kind":"pith_short_12","alias_value":"TJO4FFWDMBL6","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"TJO4FFWDMBL6LQUV","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"TJO4FFWD","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:47ac4bfe10b5c98372794f644af6617b060e4b5e09289482363bd6becdf20444","target":"graph","created_at":"2026-05-18T04:05:47Z","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":"Effect of ambient gases on photoluminescence (PL) and electrical conductivity of films prepared using ZnO nanoparticles (NPs) have been investigated. It is observed that NPs of size below 20 nm kept inside a chamber exhibit complete reduction in their visible PL when oxygen partial pressure of the surrounding gases is decreased by evacuation. However the visible PL from ZnO NPs is insensitive to other major gases present in the ambient air. The rate of change of PL intensity with pressure is inversely proportional to the ambient air pressure and increases when particle size decreases due to th","authors_text":"D. Bahadur, D. Das, Manoranjan Ghosh, R.K. Vatsa, R. S. Ningthoujam, S.C. Gadkari, S. K. Gupta, V. Nataraju","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-09-10T19:19:55Z","title":"Role of ambient air on photoluminescence and electrical conductivity of assembly of ZnO Nanoparticles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.2253","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":"sha256:250b7e1ce8b9106be513f781c1fc18028759734570d9dc1cdd9584c8b7527a76","target":"record","created_at":"2026-05-18T04:05:47Z","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":"b09576721b07e8d18af85acb190e021309a6797637e740885b8668f34d0e42e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-09-10T19:19:55Z","title_canon_sha256":"3a447dbda5613994ac46fc2b32dc7691b3f32106ec6935ed316cc99ed8606292"},"schema_version":"1.0","source":{"id":"1109.2253","kind":"arxiv","version":1}},"canonical_sha256":"9a5dc296c36057e5c2957a6b24e3f0be5b2055e652b788cb3aa877bfc7f7607f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a5dc296c36057e5c2957a6b24e3f0be5b2055e652b788cb3aa877bfc7f7607f","first_computed_at":"2026-05-18T04:05:47.048619Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:05:47.048619Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KaJtFstCOxaSRcfvoIfBwnrMtvjkH/c6hprvgnR7Jtzp8U0wddyUFvvwJqGwwV1joRe9KkWkI0TSvbZp6xtcBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:05:47.049032Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.2253","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:250b7e1ce8b9106be513f781c1fc18028759734570d9dc1cdd9584c8b7527a76","sha256:47ac4bfe10b5c98372794f644af6617b060e4b5e09289482363bd6becdf20444"],"state_sha256":"a771c511c5ed982dfdb4d864d6e5f77db09984e0fc839f8cbfd6c980c30332bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nsh/RXFQJWf6A4DsmSu/J5cVUxUX4/l7ZhJ1z4Zi03WSOQGASAPk+3zTzgvsrg2eXsuwd5CkgOPYY9nAhKdWBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:55:29.420013Z","bundle_sha256":"56ea80e6331652f08296a9e6136014bbdd2ffcefdf1772463a226238863e0dd6"}}