{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:Z4WCKWTGQPI7YJAPAHRVPZE5IB","short_pith_number":"pith:Z4WCKWTG","canonical_record":{"source":{"id":"2009.04205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-09T10:48:06Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"fb3ebf8f47cc224816c1265e9183a3e80ab786224605fe8d558dffe404ba9b91","abstract_canon_sha256":"11face47d3b5b9ce884dec068f2f26f48f0ac04517822a403f1b9453a3e2497b"},"schema_version":"1.0"},"canonical_sha256":"cf2c255a6683d1fc240f01e357e49d4048ab9d8a8e04b5b8d2a82b02693eab08","source":{"kind":"arxiv","id":"2009.04205","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.04205","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"arxiv_version","alias_value":"2009.04205v1","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.04205","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"pith_short_12","alias_value":"Z4WCKWTGQPI7","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"pith_short_16","alias_value":"Z4WCKWTGQPI7YJAP","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"pith_short_8","alias_value":"Z4WCKWTG","created_at":"2026-07-05T01:34:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:Z4WCKWTGQPI7YJAPAHRVPZE5IB","target":"record","payload":{"canonical_record":{"source":{"id":"2009.04205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-09T10:48:06Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"fb3ebf8f47cc224816c1265e9183a3e80ab786224605fe8d558dffe404ba9b91","abstract_canon_sha256":"11face47d3b5b9ce884dec068f2f26f48f0ac04517822a403f1b9453a3e2497b"},"schema_version":"1.0"},"canonical_sha256":"cf2c255a6683d1fc240f01e357e49d4048ab9d8a8e04b5b8d2a82b02693eab08","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:34:15.873797Z","signature_b64":"QuDfA9cbSAmnKVnIch9vsSawk+SVCdrzYvv639K4QjLhOEc/bCaDSs2eGk1jNHN4hHOhXdSKU1MtnCix09gCDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf2c255a6683d1fc240f01e357e49d4048ab9d8a8e04b5b8d2a82b02693eab08","last_reissued_at":"2026-07-05T01:34:15.873369Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:34:15.873369Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.04205","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":"2026-07-05T01:34:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EitqgAFfI3nmYv8/mgclqeCD0Khlo3/PVbiR7ze1kaQb9mGegBAe6kzgKmA1O54h04j1w60ocXEjV1ffcn0UDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T19:45:01.468107Z"},"content_sha256":"b6671250f3b00ecd6343ba24cecb3b179e461c1dc9310b3361971ddfb4219388","schema_version":"1.0","event_id":"sha256:b6671250f3b00ecd6343ba24cecb3b179e461c1dc9310b3361971ddfb4219388"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:Z4WCKWTGQPI7YJAPAHRVPZE5IB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Local probe of the interlayer coupling strength of few-layers SnSe by contact-resonance atomic force microscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Hong-Jun Gao, Kunqi Xu, Le Lei, Lihong Bao, Rui Xu, Sabir Hussain, Tengfei Pei, Wei Ji, Xiaojun Liu, Yuhao Pan, Zhihai Cheng, Zhiyue Zheng","submitted_at":"2020-09-09T10:48:06Z","abstract_excerpt":"The interlayer bonding in two dimensional materials is particularly important because it is not only related to their physical and chemical stability but also affects their mechanical, thermal, electronic, optical, and other properties. To address this issue, we report the direct characterization of the interlayer bonding in 2D SnSe using contact-resonance atomic force microscopy in this study. Site specific CR spectroscopy and CR force spectroscopy measurements are performed on both SnSe and its supporting SiO2 substrate comparatively. Based on the cantilever and contact mechanic models, the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.04205","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.04205/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:34:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N9KaZ05zW4GXNnLRgx2+iqQggz0qplB3xlZM+rglAVqLdpqUUPHTAveayvZY9j/+bfxzMPjAEFTYxW+iw0zaAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T19:45:01.468497Z"},"content_sha256":"24236e7da92cd0cfa9bfb66736e3699de4689270c099043a91046bc9a4194f96","schema_version":"1.0","event_id":"sha256:24236e7da92cd0cfa9bfb66736e3699de4689270c099043a91046bc9a4194f96"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4WCKWTGQPI7YJAPAHRVPZE5IB/bundle.json","state_url":"https://pith.science/pith/Z4WCKWTGQPI7YJAPAHRVPZE5IB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4WCKWTGQPI7YJAPAHRVPZE5IB/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":"2026-07-18T19:45:01Z","links":{"resolver":"https://pith.science/pith/Z4WCKWTGQPI7YJAPAHRVPZE5IB","bundle":"https://pith.science/pith/Z4WCKWTGQPI7YJAPAHRVPZE5IB/bundle.json","state":"https://pith.science/pith/Z4WCKWTGQPI7YJAPAHRVPZE5IB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4WCKWTGQPI7YJAPAHRVPZE5IB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:Z4WCKWTGQPI7YJAPAHRVPZE5IB","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":"11face47d3b5b9ce884dec068f2f26f48f0ac04517822a403f1b9453a3e2497b","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-09T10:48:06Z","title_canon_sha256":"fb3ebf8f47cc224816c1265e9183a3e80ab786224605fe8d558dffe404ba9b91"},"schema_version":"1.0","source":{"id":"2009.04205","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.04205","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"arxiv_version","alias_value":"2009.04205v1","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.04205","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"pith_short_12","alias_value":"Z4WCKWTGQPI7","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"pith_short_16","alias_value":"Z4WCKWTGQPI7YJAP","created_at":"2026-07-05T01:34:15Z"},{"alias_kind":"pith_short_8","alias_value":"Z4WCKWTG","created_at":"2026-07-05T01:34:15Z"}],"graph_snapshots":[{"event_id":"sha256:24236e7da92cd0cfa9bfb66736e3699de4689270c099043a91046bc9a4194f96","target":"graph","created_at":"2026-07-05T01:34:15Z","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/2009.04205/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The interlayer bonding in two dimensional materials is particularly important because it is not only related to their physical and chemical stability but also affects their mechanical, thermal, electronic, optical, and other properties. To address this issue, we report the direct characterization of the interlayer bonding in 2D SnSe using contact-resonance atomic force microscopy in this study. Site specific CR spectroscopy and CR force spectroscopy measurements are performed on both SnSe and its supporting SiO2 substrate comparatively. Based on the cantilever and contact mechanic models, the ","authors_text":"Hong-Jun Gao, Kunqi Xu, Le Lei, Lihong Bao, Rui Xu, Sabir Hussain, Tengfei Pei, Wei Ji, Xiaojun Liu, Yuhao Pan, Zhihai Cheng, Zhiyue Zheng","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-09T10:48:06Z","title":"Local probe of the interlayer coupling strength of few-layers SnSe by contact-resonance atomic force microscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.04205","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:b6671250f3b00ecd6343ba24cecb3b179e461c1dc9310b3361971ddfb4219388","target":"record","created_at":"2026-07-05T01:34:15Z","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":"11face47d3b5b9ce884dec068f2f26f48f0ac04517822a403f1b9453a3e2497b","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-09T10:48:06Z","title_canon_sha256":"fb3ebf8f47cc224816c1265e9183a3e80ab786224605fe8d558dffe404ba9b91"},"schema_version":"1.0","source":{"id":"2009.04205","kind":"arxiv","version":1}},"canonical_sha256":"cf2c255a6683d1fc240f01e357e49d4048ab9d8a8e04b5b8d2a82b02693eab08","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf2c255a6683d1fc240f01e357e49d4048ab9d8a8e04b5b8d2a82b02693eab08","first_computed_at":"2026-07-05T01:34:15.873369Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:34:15.873369Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QuDfA9cbSAmnKVnIch9vsSawk+SVCdrzYvv639K4QjLhOEc/bCaDSs2eGk1jNHN4hHOhXdSKU1MtnCix09gCDA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:34:15.873797Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.04205","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b6671250f3b00ecd6343ba24cecb3b179e461c1dc9310b3361971ddfb4219388","sha256:24236e7da92cd0cfa9bfb66736e3699de4689270c099043a91046bc9a4194f96"],"state_sha256":"d37e395883f2943f38563f6fa4891aa0a4f4a73ccafa0618dabbc5058b2bf956"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KK8eWcmxny+HXtQJe0BJxNtou+2YXNAUqQTqhtwJ0sCWJ0rSBfAnRQaHkaQeztynXnYJHkKd2zqgS2JH41uqCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-18T19:45:01.470985Z","bundle_sha256":"ef4181256d7ef43c45cae8cc2167fbbc59e40085d9d27d510f0c7aa0f1acf115"}}