{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:IGUBPUHLOBZFCB7PD2JNQJBSWE","short_pith_number":"pith:IGUBPUHL","canonical_record":{"source":{"id":"1912.11732","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-12-26T00:26:32Z","cross_cats_sorted":[],"title_canon_sha256":"323bc9b61e5981f7ea00b72015c63ceb7732c675ae7160d593738f26d6e20d7d","abstract_canon_sha256":"a556bb115b0ae100df384dc93791cbf18a88eecb012b97a617b2d1429714c1ce"},"schema_version":"1.0"},"canonical_sha256":"41a817d0eb70725107ef1e92d82432b131f8b9732611b1616f21bab0fa79ab42","source":{"kind":"arxiv","id":"1912.11732","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.11732","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"arxiv_version","alias_value":"1912.11732v3","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.11732","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_12","alias_value":"IGUBPUHLOBZF","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_16","alias_value":"IGUBPUHLOBZFCB7P","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_8","alias_value":"IGUBPUHL","created_at":"2026-07-05T04:21:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:IGUBPUHLOBZFCB7PD2JNQJBSWE","target":"record","payload":{"canonical_record":{"source":{"id":"1912.11732","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-12-26T00:26:32Z","cross_cats_sorted":[],"title_canon_sha256":"323bc9b61e5981f7ea00b72015c63ceb7732c675ae7160d593738f26d6e20d7d","abstract_canon_sha256":"a556bb115b0ae100df384dc93791cbf18a88eecb012b97a617b2d1429714c1ce"},"schema_version":"1.0"},"canonical_sha256":"41a817d0eb70725107ef1e92d82432b131f8b9732611b1616f21bab0fa79ab42","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:21:00.699702Z","signature_b64":"ZmEc0ReoVC/5fZ/GGRF7wPz20RS+hpgMxWlmKNc1qp2YRPFJYw9Jw4qvENg2QL1I5renGGLc8Tc95KJqgV6RAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41a817d0eb70725107ef1e92d82432b131f8b9732611b1616f21bab0fa79ab42","last_reissued_at":"2026-07-05T04:21:00.699212Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:21:00.699212Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.11732","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:21:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CBt3lLb9Bpoz8xjqwc4DO8sd/kWTbey8KiU51oZMoMin8/rvEVaMS1I+zNU9OezYmUUbw+IDRfMAHGru5A+bCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T11:45:29.445518Z"},"content_sha256":"84e13c66b7aa59519013d37ebcb5d2e3293ff5522b9da2e1f2ac0e4564bd86db","schema_version":"1.0","event_id":"sha256:84e13c66b7aa59519013d37ebcb5d2e3293ff5522b9da2e1f2ac0e4564bd86db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:IGUBPUHLOBZFCB7PD2JNQJBSWE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the origin of non-classical ripples in draped graphene sheets","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Aditya Lele, Adri C.T. van Duin, E.W. Hudson, Jessica A. Schulze, Lavish Pabbi, Malgorzata Kowalik, Mauricio Terrones, Md. Jamil Hossain, Riju Banerjee, Tomotaroh Granzier-Nakajima, Wenbo Zhu","submitted_at":"2019-12-26T00:26:32Z","abstract_excerpt":"Ever since the discovery of graphene and subsequent explosion of interest in single atom thick materials, studying their mechanical properties has been an active area of research. New length scales often necessitate a rethinking of physical laws, making such studies crucial for understanding and ultimately utilizing novel material properties. Here we report on the investigation of nanoscale periodic ripples in suspended, single layer graphene sheets by scanning tunneling microscopy and atomistic scale simulations. Unlike the sinusoidal ripples found in classical fabrics, we find that graphene "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.11732","kind":"arxiv","version":3},"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/1912.11732/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":"2026-07-05T04:21:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"27pIgQfVgZ+YijpLnvy/cyQHF3kCXdu+CvRrt941wMu4hH01h2biurm/4n6djeFDkxUEn2vJcvXPAEBw2ZFTBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T11:45:29.445934Z"},"content_sha256":"6c84ab4cec5f0695f037043fc9ae021544ce420de6ac3ffa82e822561a6be3a0","schema_version":"1.0","event_id":"sha256:6c84ab4cec5f0695f037043fc9ae021544ce420de6ac3ffa82e822561a6be3a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IGUBPUHLOBZFCB7PD2JNQJBSWE/bundle.json","state_url":"https://pith.science/pith/IGUBPUHLOBZFCB7PD2JNQJBSWE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IGUBPUHLOBZFCB7PD2JNQJBSWE/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":"2026-07-13T11:45:29Z","links":{"resolver":"https://pith.science/pith/IGUBPUHLOBZFCB7PD2JNQJBSWE","bundle":"https://pith.science/pith/IGUBPUHLOBZFCB7PD2JNQJBSWE/bundle.json","state":"https://pith.science/pith/IGUBPUHLOBZFCB7PD2JNQJBSWE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IGUBPUHLOBZFCB7PD2JNQJBSWE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IGUBPUHLOBZFCB7PD2JNQJBSWE","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":"a556bb115b0ae100df384dc93791cbf18a88eecb012b97a617b2d1429714c1ce","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-12-26T00:26:32Z","title_canon_sha256":"323bc9b61e5981f7ea00b72015c63ceb7732c675ae7160d593738f26d6e20d7d"},"schema_version":"1.0","source":{"id":"1912.11732","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.11732","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"arxiv_version","alias_value":"1912.11732v3","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.11732","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_12","alias_value":"IGUBPUHLOBZF","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_16","alias_value":"IGUBPUHLOBZFCB7P","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_8","alias_value":"IGUBPUHL","created_at":"2026-07-05T04:21:00Z"}],"graph_snapshots":[{"event_id":"sha256:6c84ab4cec5f0695f037043fc9ae021544ce420de6ac3ffa82e822561a6be3a0","target":"graph","created_at":"2026-07-05T04:21:00Z","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/1912.11732/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ever since the discovery of graphene and subsequent explosion of interest in single atom thick materials, studying their mechanical properties has been an active area of research. New length scales often necessitate a rethinking of physical laws, making such studies crucial for understanding and ultimately utilizing novel material properties. Here we report on the investigation of nanoscale periodic ripples in suspended, single layer graphene sheets by scanning tunneling microscopy and atomistic scale simulations. Unlike the sinusoidal ripples found in classical fabrics, we find that graphene ","authors_text":"Aditya Lele, Adri C.T. van Duin, E.W. Hudson, Jessica A. Schulze, Lavish Pabbi, Malgorzata Kowalik, Mauricio Terrones, Md. Jamil Hossain, Riju Banerjee, Tomotaroh Granzier-Nakajima, Wenbo Zhu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-12-26T00:26:32Z","title":"On the origin of non-classical ripples in draped graphene sheets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.11732","kind":"arxiv","version":3},"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":"sha256:84e13c66b7aa59519013d37ebcb5d2e3293ff5522b9da2e1f2ac0e4564bd86db","target":"record","created_at":"2026-07-05T04:21:00Z","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":"a556bb115b0ae100df384dc93791cbf18a88eecb012b97a617b2d1429714c1ce","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-12-26T00:26:32Z","title_canon_sha256":"323bc9b61e5981f7ea00b72015c63ceb7732c675ae7160d593738f26d6e20d7d"},"schema_version":"1.0","source":{"id":"1912.11732","kind":"arxiv","version":3}},"canonical_sha256":"41a817d0eb70725107ef1e92d82432b131f8b9732611b1616f21bab0fa79ab42","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41a817d0eb70725107ef1e92d82432b131f8b9732611b1616f21bab0fa79ab42","first_computed_at":"2026-07-05T04:21:00.699212Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:21:00.699212Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZmEc0ReoVC/5fZ/GGRF7wPz20RS+hpgMxWlmKNc1qp2YRPFJYw9Jw4qvENg2QL1I5renGGLc8Tc95KJqgV6RAw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:21:00.699702Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.11732","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84e13c66b7aa59519013d37ebcb5d2e3293ff5522b9da2e1f2ac0e4564bd86db","sha256:6c84ab4cec5f0695f037043fc9ae021544ce420de6ac3ffa82e822561a6be3a0"],"state_sha256":"5d50ac23d0b888200840794e6bc522811cc024d7defa8026b90c166bd12d435a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"645a282Dz8NPoRp9evSNb1vmGDuIbL1VQW7syLK+J+9uNByNJyKaS5N7bzGZ0lvUEMyg7zbYu0B9kpdGKwDnCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-13T11:45:29.448141Z","bundle_sha256":"a519efbc4e71a0d6d97d265e1bf5d7b1b79079e390bf9c2a31549dbba32eb186"}}