{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:TEIOJRGYB6QB7VJFVDY5NC5QAN","short_pith_number":"pith:TEIOJRGY","canonical_record":{"source":{"id":"1002.3191","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-02-17T00:58:50Z","cross_cats_sorted":[],"title_canon_sha256":"0462a9e68cd8af981974e1ce44250f607fb2caba5a296615966eaf00d94df43d","abstract_canon_sha256":"2e1e9fd254e87b56f09d88afdace03e029d03dd0bcd5d316aa1109b617e8396b"},"schema_version":"1.0"},"canonical_sha256":"9910e4c4d80fa01fd525a8f1d68bb0036e9f02ebe24b4b1ddf57b5948bb86fcd","source":{"kind":"arxiv","id":"1002.3191","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.3191","created_at":"2026-05-18T02:09:07Z"},{"alias_kind":"arxiv_version","alias_value":"1002.3191v1","created_at":"2026-05-18T02:09:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.3191","created_at":"2026-05-18T02:09:07Z"},{"alias_kind":"pith_short_12","alias_value":"TEIOJRGYB6QB","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TEIOJRGYB6QB7VJF","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TEIOJRGY","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:TEIOJRGYB6QB7VJFVDY5NC5QAN","target":"record","payload":{"canonical_record":{"source":{"id":"1002.3191","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-02-17T00:58:50Z","cross_cats_sorted":[],"title_canon_sha256":"0462a9e68cd8af981974e1ce44250f607fb2caba5a296615966eaf00d94df43d","abstract_canon_sha256":"2e1e9fd254e87b56f09d88afdace03e029d03dd0bcd5d316aa1109b617e8396b"},"schema_version":"1.0"},"canonical_sha256":"9910e4c4d80fa01fd525a8f1d68bb0036e9f02ebe24b4b1ddf57b5948bb86fcd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:09:07.480153Z","signature_b64":"F30TKthm8UB+TUSlia0N6WEnwd8O0Q3X/GtDTJzB8G0fEfV9OJHZ2zvuKEWdTJfxuQLDjkeUHojwN0GWnV70BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9910e4c4d80fa01fd525a8f1d68bb0036e9f02ebe24b4b1ddf57b5948bb86fcd","last_reissued_at":"2026-05-18T02:09:07.479500Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:09:07.479500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1002.3191","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":"2026-05-18T02:09:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8qCJI9iJY6OHrprkOgAapgjvy5HT7/aJ8cSnZc+tA/DI8P8CWFw3B/JpohZgSYnaB1oFL0KCqR9KUUrg1rNPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:17:56.998972Z"},"content_sha256":"27dce2c4a5ba81ee486059de7a5891157aa2bd2ad61f31b25aff5da72a5115c7","schema_version":"1.0","event_id":"sha256:27dce2c4a5ba81ee486059de7a5891157aa2bd2ad61f31b25aff5da72a5115c7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:TEIOJRGYB6QB7VJFVDY5NC5QAN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Position dependent photodetector from large area reduced graphene oxide thin films","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Anindarupa Chunder, Biddut K. Sarker, Lei Zhai, Saiful I. Khondaker, Surajit Ghosh","submitted_at":"2010-02-17T00:58:50Z","abstract_excerpt":"We fabricated large area infrared photodetector devices from thin film of chemically reduced graphene oxide (RGO) sheets and studied their photoresponse as a function of laser position. We found that the photocurrent either increases, decreases or remain almost zero depending upon the position of the laser spot with respect to the electrodes. The position sensitive photoresponse is explained by Schottky barrier modulation at the RGO film-electrode interface. The time response of the photocurrent is dramatically slower than single sheet of graphene possibly due to disorder from the chemically s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.3191","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":"2026-05-18T02:09:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6W7e2/GvKfOT1Cxyv9ikxcfD6cALVi9Hkic2WhhgsHfjSv0vKnbhuWoZf2dRR/k1rb47tviKlxhE4aqCC1+IDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:17:56.999624Z"},"content_sha256":"8733a3d6f860b4cdb7224ccc12330967540218102bd7f13cfbfbbd1b4a5b74b9","schema_version":"1.0","event_id":"sha256:8733a3d6f860b4cdb7224ccc12330967540218102bd7f13cfbfbbd1b4a5b74b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TEIOJRGYB6QB7VJFVDY5NC5QAN/bundle.json","state_url":"https://pith.science/pith/TEIOJRGYB6QB7VJFVDY5NC5QAN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TEIOJRGYB6QB7VJFVDY5NC5QAN/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":"2026-05-27T14:17:57Z","links":{"resolver":"https://pith.science/pith/TEIOJRGYB6QB7VJFVDY5NC5QAN","bundle":"https://pith.science/pith/TEIOJRGYB6QB7VJFVDY5NC5QAN/bundle.json","state":"https://pith.science/pith/TEIOJRGYB6QB7VJFVDY5NC5QAN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TEIOJRGYB6QB7VJFVDY5NC5QAN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:TEIOJRGYB6QB7VJFVDY5NC5QAN","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":"2e1e9fd254e87b56f09d88afdace03e029d03dd0bcd5d316aa1109b617e8396b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-02-17T00:58:50Z","title_canon_sha256":"0462a9e68cd8af981974e1ce44250f607fb2caba5a296615966eaf00d94df43d"},"schema_version":"1.0","source":{"id":"1002.3191","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.3191","created_at":"2026-05-18T02:09:07Z"},{"alias_kind":"arxiv_version","alias_value":"1002.3191v1","created_at":"2026-05-18T02:09:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.3191","created_at":"2026-05-18T02:09:07Z"},{"alias_kind":"pith_short_12","alias_value":"TEIOJRGYB6QB","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TEIOJRGYB6QB7VJF","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TEIOJRGY","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:8733a3d6f860b4cdb7224ccc12330967540218102bd7f13cfbfbbd1b4a5b74b9","target":"graph","created_at":"2026-05-18T02:09:07Z","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 fabricated large area infrared photodetector devices from thin film of chemically reduced graphene oxide (RGO) sheets and studied their photoresponse as a function of laser position. We found that the photocurrent either increases, decreases or remain almost zero depending upon the position of the laser spot with respect to the electrodes. The position sensitive photoresponse is explained by Schottky barrier modulation at the RGO film-electrode interface. The time response of the photocurrent is dramatically slower than single sheet of graphene possibly due to disorder from the chemically s","authors_text":"Anindarupa Chunder, Biddut K. Sarker, Lei Zhai, Saiful I. Khondaker, Surajit Ghosh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-02-17T00:58:50Z","title":"Position dependent photodetector from large area reduced graphene oxide thin films"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.3191","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":"sha256:27dce2c4a5ba81ee486059de7a5891157aa2bd2ad61f31b25aff5da72a5115c7","target":"record","created_at":"2026-05-18T02:09:07Z","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":"2e1e9fd254e87b56f09d88afdace03e029d03dd0bcd5d316aa1109b617e8396b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-02-17T00:58:50Z","title_canon_sha256":"0462a9e68cd8af981974e1ce44250f607fb2caba5a296615966eaf00d94df43d"},"schema_version":"1.0","source":{"id":"1002.3191","kind":"arxiv","version":1}},"canonical_sha256":"9910e4c4d80fa01fd525a8f1d68bb0036e9f02ebe24b4b1ddf57b5948bb86fcd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9910e4c4d80fa01fd525a8f1d68bb0036e9f02ebe24b4b1ddf57b5948bb86fcd","first_computed_at":"2026-05-18T02:09:07.479500Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:09:07.479500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F30TKthm8UB+TUSlia0N6WEnwd8O0Q3X/GtDTJzB8G0fEfV9OJHZ2zvuKEWdTJfxuQLDjkeUHojwN0GWnV70BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:09:07.480153Z","signed_message":"canonical_sha256_bytes"},"source_id":"1002.3191","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27dce2c4a5ba81ee486059de7a5891157aa2bd2ad61f31b25aff5da72a5115c7","sha256:8733a3d6f860b4cdb7224ccc12330967540218102bd7f13cfbfbbd1b4a5b74b9"],"state_sha256":"0d22236a58d3086a15724f06bbe85763d3b279536c12f876740ac89189fae43d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uXaK9xzjFchmZd1+8mi4PiSzFYpu2Zs7pzlSJEfkwBLdfmyyqXLWf1HrVj/IDfu1Friaz+k+FrcIUCN5o3lfDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:17:57.003067Z","bundle_sha256":"f0d643fa5c7ba67b12a31b5caf2a79beba2154457930316c2f8dbf08a0b85666"}}