{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:T2BITS4C76KH32B3IYDBDGXHXJ","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":"9dd347384cdff1d80cb3a31350aa67fb5b58480c39598ee9e66b173df606dda6","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-01-20T13:56:01Z","title_canon_sha256":"9532713416ac83dd6352bc1aa02cd0aeb84fae22d3a6ebc135cf27fe35bb0099"},"schema_version":"1.0","source":{"id":"1201.4293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.4293","created_at":"2026-07-05T02:58:02Z"},{"alias_kind":"arxiv_version","alias_value":"1201.4293v1","created_at":"2026-07-05T02:58:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.4293","created_at":"2026-07-05T02:58:02Z"},{"alias_kind":"pith_short_12","alias_value":"T2BITS4C76KH","created_at":"2026-07-05T02:58:02Z"},{"alias_kind":"pith_short_16","alias_value":"T2BITS4C76KH32B3","created_at":"2026-07-05T02:58:02Z"},{"alias_kind":"pith_short_8","alias_value":"T2BITS4C","created_at":"2026-07-05T02:58:02Z"}],"graph_snapshots":[{"event_id":"sha256:4a3bd6a86d06974f4c1b8f4e846bc9a27dc0c63ff772b278575e1ce84696626f","target":"graph","created_at":"2026-07-05T02:58:02Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1201.4293/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the existence of water-gated charge doping of graphene deposited on atomically flat mica substrates. Molecular films of water in units of ~0.4 nm-thick bilayers were found to be present in regions of the interface of graphene/mica hetero-stacks prepared by micromechanical exfoliation of kish graphite. The spectral variation of the G and 2D bands, as visualized by Raman mapping, shows that mica substrates induce strong p-type doping in graphene, with hole densities of $(9 \\pm 2) \\times 1012 cm${-2}$. The ultrathin water films, however, effectively block interfacial charge transfer,","authors_text":"Chun Hung Lui, Jihye Shim, Philip Kim, Sunmin Ryu, Taeg Yeoung Ko, Tony F. Heinz, Young-Jun Yu","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-01-20T13:56:01Z","title":"Water-Gated Charge Doping of Graphene Induced by Mica Substrates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.4293","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:e8065d038d5763a1e625ed7668d7f802c43a0abafa759d34a91a0d9d3698c938","target":"record","created_at":"2026-07-05T02:58:02Z","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":"9dd347384cdff1d80cb3a31350aa67fb5b58480c39598ee9e66b173df606dda6","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-01-20T13:56:01Z","title_canon_sha256":"9532713416ac83dd6352bc1aa02cd0aeb84fae22d3a6ebc135cf27fe35bb0099"},"schema_version":"1.0","source":{"id":"1201.4293","kind":"arxiv","version":1}},"canonical_sha256":"9e8289cb82ff947de83b4606119ae7ba40b33726da9e9a0ef0d2721280cdb4a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e8289cb82ff947de83b4606119ae7ba40b33726da9e9a0ef0d2721280cdb4a9","first_computed_at":"2026-07-05T02:58:02.499951Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:58:02.499951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A+LadUFehVSEKqjewv9+9ho/0Y5NUEmhQ/vZjjac9pEnpNYdVbN+kimTfcQ8Jtvxbb7nfT1NW0CErNuLFuJXDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:58:02.500378Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.4293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8065d038d5763a1e625ed7668d7f802c43a0abafa759d34a91a0d9d3698c938","sha256:4a3bd6a86d06974f4c1b8f4e846bc9a27dc0c63ff772b278575e1ce84696626f"],"state_sha256":"701e05efc2845b38db94ed3af5fe9a443d1517e2f468e7974c355980f5725049"}