{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TXWXLD3HUSTRWJUX7D73O2SB5G","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":"7a9493a9bdbb9ced764ee0a9dab0fb6240d3834753ca1f5a119ead59f0a35966","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-02-05T22:49:19Z","title_canon_sha256":"554049ab81f282c0c882872b9fc8ec64d62674d53fb2cd61ff468c243fc2bf8d"},"schema_version":"1.0","source":{"id":"1302.1230","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1230","created_at":"2026-05-18T03:01:46Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1230v2","created_at":"2026-05-18T03:01:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1230","created_at":"2026-05-18T03:01:46Z"},{"alias_kind":"pith_short_12","alias_value":"TXWXLD3HUSTR","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TXWXLD3HUSTRWJUX","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TXWXLD3H","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:1cccdb8361f0f32326bddb4b22f60608c56c30f8bb65b7f7e644814940e29b5d","target":"graph","created_at":"2026-05-18T03:01:46Z","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":"Due to its high carrier mobility, broadband absorption, and fast response time, graphene is attractive for optoelectronics and photodetection applications. However, the extraction of photoelectrons in conventional metal-graphene junction devices is limited by their small junction area, where the typical photoresponsivity is lower than 0.01 AW-1. On the other hand, the atomically thin layer of molybdenum disulfide (MoS2) is a two-dimensional (2d) nanomaterial with a direct and finite band gap, offering the possibility of acting as a 2d light absorber. The optoelectronic properties of the hetero","authors_text":"Chang-Hsiao Chen, Chih-Piao Chuu, Chi-Te Liang, Jing-Kai Huang, Jr-Hau He, Lain-Jong Li, Mei-Ying Chou, Meng-Lin Tsai, Wenjing Zhang, Yung-Huang Chang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-02-05T22:49:19Z","title":"Ultrahigh-Gain Phototransistors Based on Graphene-MoS2 Heterostructures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1230","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":"sha256:17f1deadd7e3e66827cadb915b5ab2c444905a1982add1356eea5d02a0994334","target":"record","created_at":"2026-05-18T03:01:46Z","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":"7a9493a9bdbb9ced764ee0a9dab0fb6240d3834753ca1f5a119ead59f0a35966","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-02-05T22:49:19Z","title_canon_sha256":"554049ab81f282c0c882872b9fc8ec64d62674d53fb2cd61ff468c243fc2bf8d"},"schema_version":"1.0","source":{"id":"1302.1230","kind":"arxiv","version":2}},"canonical_sha256":"9ded758f67a4a71b2697f8ffb76a41e98518e4ed895d1ca39690d5f8a6319d3c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ded758f67a4a71b2697f8ffb76a41e98518e4ed895d1ca39690d5f8a6319d3c","first_computed_at":"2026-05-18T03:01:46.776299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:01:46.776299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0zGyirb8cDyXYbGet43loHNux/sVspTpXiFe8OXDmPI9Z9waA4quEdUhRqSd8506n77k3VGab41KDvwXkr2HCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:01:46.776828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.1230","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17f1deadd7e3e66827cadb915b5ab2c444905a1982add1356eea5d02a0994334","sha256:1cccdb8361f0f32326bddb4b22f60608c56c30f8bb65b7f7e644814940e29b5d"],"state_sha256":"f2a436e9a9ed8503909b52ee86d78ed7c0d13a5eb4fbc27ca947ac62bd149e8a"}