{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:AV5QSOLXKT5O76DLFQMLIEKKMZ","short_pith_number":"pith:AV5QSOLX","canonical_record":{"source":{"id":"1305.0465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-02T15:01:11Z","cross_cats_sorted":[],"title_canon_sha256":"53e58d9b8cb2295aeafee061d37bc04e785d717116ef256f63bab481e6b5df2a","abstract_canon_sha256":"d604190d50f14ff0c6ffd8fea1bc6a5dc39841f56464ad88824187d26fe3af5a"},"schema_version":"1.0"},"canonical_sha256":"057b09397754faeff86b2c18b4114a667127ac4c8d85ef6f67cd8630c4a4bbee","source":{"kind":"arxiv","id":"1305.0465","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.0465","created_at":"2026-05-18T03:26:40Z"},{"alias_kind":"arxiv_version","alias_value":"1305.0465v1","created_at":"2026-05-18T03:26:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.0465","created_at":"2026-05-18T03:26:40Z"},{"alias_kind":"pith_short_12","alias_value":"AV5QSOLXKT5O","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AV5QSOLXKT5O76DL","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AV5QSOLX","created_at":"2026-05-18T12:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:AV5QSOLXKT5O76DLFQMLIEKKMZ","target":"record","payload":{"canonical_record":{"source":{"id":"1305.0465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-02T15:01:11Z","cross_cats_sorted":[],"title_canon_sha256":"53e58d9b8cb2295aeafee061d37bc04e785d717116ef256f63bab481e6b5df2a","abstract_canon_sha256":"d604190d50f14ff0c6ffd8fea1bc6a5dc39841f56464ad88824187d26fe3af5a"},"schema_version":"1.0"},"canonical_sha256":"057b09397754faeff86b2c18b4114a667127ac4c8d85ef6f67cd8630c4a4bbee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:26:40.223079Z","signature_b64":"I8AnSfdaFRKdjH+eaNMqHdopAQo8eY8EllIrbIA+ybuOC6hsPCVv4Uyebzgj/qQD55CAgjHGcp9GZbp869JkAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"057b09397754faeff86b2c18b4114a667127ac4c8d85ef6f67cd8630c4a4bbee","last_reissued_at":"2026-05-18T03:26:40.222563Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:26:40.222563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.0465","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":"2026-05-18T03:26:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fxbFwfHPw8krrIpttq5vTCsBW/H3B0C3WMaBaX7gz0O1oO+XTy8M8KVUzu9OQpxHChkWTKRN1wAWtqfylyVZCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:19:56.183379Z"},"content_sha256":"c401a5abd75810038e0d109f9a10ae66f912d494f0f1e75e5bb326cd0fb22339","schema_version":"1.0","event_id":"sha256:c401a5abd75810038e0d109f9a10ae66f912d494f0f1e75e5bb326cd0fb22339"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:AV5QSOLXKT5O76DLFQMLIEKKMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Standardization of surface potential measurements of graphene domains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander Tzalenchuk, Olga Kazakova, Rositza Yakimova, Ruth Pearce, Vishal Panchal","submitted_at":"2013-05-02T15:01:11Z","abstract_excerpt":"We compare the three most commonly used scanning probe techniques to obtain a reliable value of the work function in graphene domains of different thickness. The surface potential (SP) of graphene is directly measured in Hall bar geometry via a combination of electrical functional microscopy and spectroscopy techniques, which enables calibrated work function measurements of graphene domains with values ~4.55+/-0.02 eV and ~4.44+/-0.02eV for single- and bi-layer, respectively. We demonstrate that frequency-modulated Kelvin probe force microscopy (FM-KPFM) provides more accurate measurement of t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.0465","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":"2026-05-18T03:26:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bA7Zq59Z7RMMoTYaIe8h7U0x4Sf30orDXKFeG9Nm9IoL2B4+bBwg+CsxyOQK5g4/OdgYU5L6PcfBE9gLJ+D1Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:19:56.184046Z"},"content_sha256":"afd870f129b184e6d409d260c233ec2804c54158e485ee532076273dc260c8b3","schema_version":"1.0","event_id":"sha256:afd870f129b184e6d409d260c233ec2804c54158e485ee532076273dc260c8b3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AV5QSOLXKT5O76DLFQMLIEKKMZ/bundle.json","state_url":"https://pith.science/pith/AV5QSOLXKT5O76DLFQMLIEKKMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AV5QSOLXKT5O76DLFQMLIEKKMZ/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":"2026-05-26T17:19:56Z","links":{"resolver":"https://pith.science/pith/AV5QSOLXKT5O76DLFQMLIEKKMZ","bundle":"https://pith.science/pith/AV5QSOLXKT5O76DLFQMLIEKKMZ/bundle.json","state":"https://pith.science/pith/AV5QSOLXKT5O76DLFQMLIEKKMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AV5QSOLXKT5O76DLFQMLIEKKMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:AV5QSOLXKT5O76DLFQMLIEKKMZ","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":"d604190d50f14ff0c6ffd8fea1bc6a5dc39841f56464ad88824187d26fe3af5a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-02T15:01:11Z","title_canon_sha256":"53e58d9b8cb2295aeafee061d37bc04e785d717116ef256f63bab481e6b5df2a"},"schema_version":"1.0","source":{"id":"1305.0465","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.0465","created_at":"2026-05-18T03:26:40Z"},{"alias_kind":"arxiv_version","alias_value":"1305.0465v1","created_at":"2026-05-18T03:26:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.0465","created_at":"2026-05-18T03:26:40Z"},{"alias_kind":"pith_short_12","alias_value":"AV5QSOLXKT5O","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AV5QSOLXKT5O76DL","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AV5QSOLX","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:afd870f129b184e6d409d260c233ec2804c54158e485ee532076273dc260c8b3","target":"graph","created_at":"2026-05-18T03:26:40Z","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 compare the three most commonly used scanning probe techniques to obtain a reliable value of the work function in graphene domains of different thickness. The surface potential (SP) of graphene is directly measured in Hall bar geometry via a combination of electrical functional microscopy and spectroscopy techniques, which enables calibrated work function measurements of graphene domains with values ~4.55+/-0.02 eV and ~4.44+/-0.02eV for single- and bi-layer, respectively. We demonstrate that frequency-modulated Kelvin probe force microscopy (FM-KPFM) provides more accurate measurement of t","authors_text":"Alexander Tzalenchuk, Olga Kazakova, Rositza Yakimova, Ruth Pearce, Vishal Panchal","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-02T15:01:11Z","title":"Standardization of surface potential measurements of graphene domains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.0465","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:c401a5abd75810038e0d109f9a10ae66f912d494f0f1e75e5bb326cd0fb22339","target":"record","created_at":"2026-05-18T03:26:40Z","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":"d604190d50f14ff0c6ffd8fea1bc6a5dc39841f56464ad88824187d26fe3af5a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-02T15:01:11Z","title_canon_sha256":"53e58d9b8cb2295aeafee061d37bc04e785d717116ef256f63bab481e6b5df2a"},"schema_version":"1.0","source":{"id":"1305.0465","kind":"arxiv","version":1}},"canonical_sha256":"057b09397754faeff86b2c18b4114a667127ac4c8d85ef6f67cd8630c4a4bbee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"057b09397754faeff86b2c18b4114a667127ac4c8d85ef6f67cd8630c4a4bbee","first_computed_at":"2026-05-18T03:26:40.222563Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:26:40.222563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I8AnSfdaFRKdjH+eaNMqHdopAQo8eY8EllIrbIA+ybuOC6hsPCVv4Uyebzgj/qQD55CAgjHGcp9GZbp869JkAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:26:40.223079Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.0465","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c401a5abd75810038e0d109f9a10ae66f912d494f0f1e75e5bb326cd0fb22339","sha256:afd870f129b184e6d409d260c233ec2804c54158e485ee532076273dc260c8b3"],"state_sha256":"a7042a7d04f4b3129b5de11b65549223732f2b600f70f56860b694a39677a2ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IQTyKbJGaIJXuaibR8WT2C6OJjFb1GhhGpFlzLE/JzOAS87/xK6LleLqLNgKQE9W+vUp5r1yarzJMcYt7ehyCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T17:19:56.187732Z","bundle_sha256":"45c6799f8dcf56dc8e70b506668106a2d555f3e175ec0a803aeb0b17f9bf98b7"}}