{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:7CN25E3D3R77HOBDZVVH4YNF2N","short_pith_number":"pith:7CN25E3D","canonical_record":{"source":{"id":"1208.6110","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-30T08:36:57Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"82c73d1daa05952ec6d25f146c2f08edea16a5807a3ca16ed5b9b85b561cc611","abstract_canon_sha256":"ecfd7829fddd6b55448bd3bd2904ffa0179a78c898de8ec4199fee37afb987e4"},"schema_version":"1.0"},"canonical_sha256":"f89bae9363dc7ff3b823cd6a7e61a5d35e8698bd89d7abbad95f827169757dcd","source":{"kind":"arxiv","id":"1208.6110","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.6110","created_at":"2026-05-18T03:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"1208.6110v1","created_at":"2026-05-18T03:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.6110","created_at":"2026-05-18T03:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"7CN25E3D3R77","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"7CN25E3D3R77HOBD","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"7CN25E3D","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:7CN25E3D3R77HOBDZVVH4YNF2N","target":"record","payload":{"canonical_record":{"source":{"id":"1208.6110","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-30T08:36:57Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"82c73d1daa05952ec6d25f146c2f08edea16a5807a3ca16ed5b9b85b561cc611","abstract_canon_sha256":"ecfd7829fddd6b55448bd3bd2904ffa0179a78c898de8ec4199fee37afb987e4"},"schema_version":"1.0"},"canonical_sha256":"f89bae9363dc7ff3b823cd6a7e61a5d35e8698bd89d7abbad95f827169757dcd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:46.486403Z","signature_b64":"2E1hEn9icKrYH/xSVAZ8iRzLQZmmo1UeyC+lqxICc51YTosH80xMYV3XhtTxa79+wnrtqDuLIkjnLKOEGC98Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f89bae9363dc7ff3b823cd6a7e61a5d35e8698bd89d7abbad95f827169757dcd","last_reissued_at":"2026-05-18T03:46:46.485488Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:46.485488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.6110","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":"2026-05-18T03:46:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LKqWcrCpAVBCP4+7fF210fw3GQ25x5u8WTwAiJ6xPa7Nqxwh9unDUGy3pjmzxqnlz6/mDWUGONfRJlp549KeDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:46:20.610601Z"},"content_sha256":"a8ee54f2e72e4a593098cea92c8dbe79246f2a8a70356447d9f509f971885319","schema_version":"1.0","event_id":"sha256:a8ee54f2e72e4a593098cea92c8dbe79246f2a8a70356447d9f509f971885319"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:7CN25E3D3R77HOBDZVVH4YNF2N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mechanical properties of freely suspended atomically thin dielectric layers of mica","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Albert Amor-Amor\\'os, Andres Castellanos-Gomez, Gabino Rubio-Bollinger, Gary A. Steele, Herre S.J. van der Zant, Menno Poot, Nicol\\'as Agra\\\"it","submitted_at":"2012-08-30T08:36:57Z","abstract_excerpt":"We have studied the elastic deformation of freely suspended atomically thin sheets of muscovite mica, a widely used electrical insulator in its bulk form. Using an atomic force microscope, we carried out bending test experiments to determine the Young's modulus and the initial pre-tension of mica nanosheets with thicknesses ranging from 14 layers down to just one bilayer. We found that their Young's modulus is high (190 GPa), in agreement with the bulk value, which indicates that the exfoliation procedure employed to fabricate these nanolayers does not introduce a noticeable amount of defects."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.6110","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":"2026-05-18T03:46:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WWbLP8m3IG3VojsAbRFhEVw1MATsxNdEMYsFtYImJHXMi9xDnKRnPRg/hC0EIB9fxUhBkRoD89yAmKGH9SEwBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:46:20.610949Z"},"content_sha256":"4396cda522a4495722ab5e670c9af6ea9e0ce1fbfa074164efe71eca42d5e8a9","schema_version":"1.0","event_id":"sha256:4396cda522a4495722ab5e670c9af6ea9e0ce1fbfa074164efe71eca42d5e8a9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7CN25E3D3R77HOBDZVVH4YNF2N/bundle.json","state_url":"https://pith.science/pith/7CN25E3D3R77HOBDZVVH4YNF2N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7CN25E3D3R77HOBDZVVH4YNF2N/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":"2026-06-02T01:46:20Z","links":{"resolver":"https://pith.science/pith/7CN25E3D3R77HOBDZVVH4YNF2N","bundle":"https://pith.science/pith/7CN25E3D3R77HOBDZVVH4YNF2N/bundle.json","state":"https://pith.science/pith/7CN25E3D3R77HOBDZVVH4YNF2N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7CN25E3D3R77HOBDZVVH4YNF2N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7CN25E3D3R77HOBDZVVH4YNF2N","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":"ecfd7829fddd6b55448bd3bd2904ffa0179a78c898de8ec4199fee37afb987e4","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-30T08:36:57Z","title_canon_sha256":"82c73d1daa05952ec6d25f146c2f08edea16a5807a3ca16ed5b9b85b561cc611"},"schema_version":"1.0","source":{"id":"1208.6110","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.6110","created_at":"2026-05-18T03:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"1208.6110v1","created_at":"2026-05-18T03:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.6110","created_at":"2026-05-18T03:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"7CN25E3D3R77","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"7CN25E3D3R77HOBD","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"7CN25E3D","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:4396cda522a4495722ab5e670c9af6ea9e0ce1fbfa074164efe71eca42d5e8a9","target":"graph","created_at":"2026-05-18T03:46:46Z","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":"We have studied the elastic deformation of freely suspended atomically thin sheets of muscovite mica, a widely used electrical insulator in its bulk form. Using an atomic force microscope, we carried out bending test experiments to determine the Young's modulus and the initial pre-tension of mica nanosheets with thicknesses ranging from 14 layers down to just one bilayer. We found that their Young's modulus is high (190 GPa), in agreement with the bulk value, which indicates that the exfoliation procedure employed to fabricate these nanolayers does not introduce a noticeable amount of defects.","authors_text":"Albert Amor-Amor\\'os, Andres Castellanos-Gomez, Gabino Rubio-Bollinger, Gary A. Steele, Herre S.J. van der Zant, Menno Poot, Nicol\\'as Agra\\\"it","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-30T08:36:57Z","title":"Mechanical properties of freely suspended atomically thin dielectric layers of mica"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.6110","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:a8ee54f2e72e4a593098cea92c8dbe79246f2a8a70356447d9f509f971885319","target":"record","created_at":"2026-05-18T03:46:46Z","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":"ecfd7829fddd6b55448bd3bd2904ffa0179a78c898de8ec4199fee37afb987e4","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-30T08:36:57Z","title_canon_sha256":"82c73d1daa05952ec6d25f146c2f08edea16a5807a3ca16ed5b9b85b561cc611"},"schema_version":"1.0","source":{"id":"1208.6110","kind":"arxiv","version":1}},"canonical_sha256":"f89bae9363dc7ff3b823cd6a7e61a5d35e8698bd89d7abbad95f827169757dcd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f89bae9363dc7ff3b823cd6a7e61a5d35e8698bd89d7abbad95f827169757dcd","first_computed_at":"2026-05-18T03:46:46.485488Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:46.485488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2E1hEn9icKrYH/xSVAZ8iRzLQZmmo1UeyC+lqxICc51YTosH80xMYV3XhtTxa79+wnrtqDuLIkjnLKOEGC98Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:46.486403Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.6110","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8ee54f2e72e4a593098cea92c8dbe79246f2a8a70356447d9f509f971885319","sha256:4396cda522a4495722ab5e670c9af6ea9e0ce1fbfa074164efe71eca42d5e8a9"],"state_sha256":"f569ff86d98b793c6c2047ab16d621ab9da1bdb1443cad246dda342235d3eeeb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MkaiF6xhcRK2yy6TOd8YlRUXSfjq5i+AvSQvE9njcLdf8Af8TZ/uFmmjr6l4PB8i8mqpmJi+jfbl0Uk6uQqaDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T01:46:20.612852Z","bundle_sha256":"7d8f5315f218bebc54d8ddb068b5fec516b6f33d4da9f2d8b52cf5f76736442e"}}