{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:KGXGKPTEFATL7T5MTDER66IITM","short_pith_number":"pith:KGXGKPTE","canonical_record":{"source":{"id":"1001.0467","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-01-04T10:08:18Z","cross_cats_sorted":[],"title_canon_sha256":"f1bd7d8ed18d5b55e3f5420317cc539265995dc7fe44e05a8ec01e0c374d6fab","abstract_canon_sha256":"cc32def143c09d72c7b261fe29b56640af13c1b72e1359240691b713edaa1626"},"schema_version":"1.0"},"canonical_sha256":"51ae653e642826bfcfac98c91f79089b3ccbf68cbb54753a66bcace2f33b963b","source":{"kind":"arxiv","id":"1001.0467","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.0467","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"arxiv_version","alias_value":"1001.0467v2","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.0467","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"pith_short_12","alias_value":"KGXGKPTEFATL","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KGXGKPTEFATL7T5M","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KGXGKPTE","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:KGXGKPTEFATL7T5MTDER66IITM","target":"record","payload":{"canonical_record":{"source":{"id":"1001.0467","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-01-04T10:08:18Z","cross_cats_sorted":[],"title_canon_sha256":"f1bd7d8ed18d5b55e3f5420317cc539265995dc7fe44e05a8ec01e0c374d6fab","abstract_canon_sha256":"cc32def143c09d72c7b261fe29b56640af13c1b72e1359240691b713edaa1626"},"schema_version":"1.0"},"canonical_sha256":"51ae653e642826bfcfac98c91f79089b3ccbf68cbb54753a66bcace2f33b963b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:05.429885Z","signature_b64":"acmnhsvMnjRKkFxvRl1KKr9ocKQZrvTUxFTyIVgIRo0Gz90oodf5tl1LbefnofaWZojrZn5NeJamf3EUsBgaDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"51ae653e642826bfcfac98c91f79089b3ccbf68cbb54753a66bcace2f33b963b","last_reissued_at":"2026-05-18T02:10:05.429337Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:05.429337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.0467","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:10:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BMQrGCyN4NGEP5VD2Di3l8Vd9OYMSEI0duVaYzR2h36ZrXJZYKkEMfYVsKhBGLS//H0YgMGlsgG69e5NjmGnDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:55:41.911922Z"},"content_sha256":"8ae0964d6ee61975177b90f64084af90928cd94b3ec1dc666fea2dadc506350b","schema_version":"1.0","event_id":"sha256:8ae0964d6ee61975177b90f64084af90928cd94b3ec1dc666fea2dadc506350b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:KGXGKPTEFATL7T5MTDER66IITM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thermal contraction in silicon nanowires at low temperatures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Baowen Li, Jian-Sheng Wang, Jin-Wu Jiang","submitted_at":"2010-01-04T10:08:18Z","abstract_excerpt":"The thermal expansion effect of silicon nanowires (SiNW) in [100], [110] and [111] directions with different sizes is theoretically investigated. At low temperatures, all SiNW studied exhibit thermal contraction effect due to the lowest energy of the bending vibration mode which has negative effect on the coefficient of thermal expansion (CTE). The CTE in [110] direction is distinctly larger than the other two growth directions because of the anisotropy of the bending mode in SiNW. Our study reveals that CTE decreases with an increase of the structure ratio $\\gamma=length/diameter$, and is neg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.0467","kind":"arxiv","version":2},"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":"2026-05-18T02:10:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LgpvWQGZB7CWNHYQUPLY9/VAdpQG0Y96tOmUmxw4bWx6WZSks9PuGjm5X5Z/pE/nbrLAiIfiI7omSYrPqOXXCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:55:41.912756Z"},"content_sha256":"cd39f3f3e9d9d588d3f5fc8372e6ed05f940ac5e8210678dbb4dc8c15260496a","schema_version":"1.0","event_id":"sha256:cd39f3f3e9d9d588d3f5fc8372e6ed05f940ac5e8210678dbb4dc8c15260496a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KGXGKPTEFATL7T5MTDER66IITM/bundle.json","state_url":"https://pith.science/pith/KGXGKPTEFATL7T5MTDER66IITM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KGXGKPTEFATL7T5MTDER66IITM/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":"2026-05-31T00:55:41Z","links":{"resolver":"https://pith.science/pith/KGXGKPTEFATL7T5MTDER66IITM","bundle":"https://pith.science/pith/KGXGKPTEFATL7T5MTDER66IITM/bundle.json","state":"https://pith.science/pith/KGXGKPTEFATL7T5MTDER66IITM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KGXGKPTEFATL7T5MTDER66IITM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KGXGKPTEFATL7T5MTDER66IITM","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":"cc32def143c09d72c7b261fe29b56640af13c1b72e1359240691b713edaa1626","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-01-04T10:08:18Z","title_canon_sha256":"f1bd7d8ed18d5b55e3f5420317cc539265995dc7fe44e05a8ec01e0c374d6fab"},"schema_version":"1.0","source":{"id":"1001.0467","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.0467","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"arxiv_version","alias_value":"1001.0467v2","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.0467","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"pith_short_12","alias_value":"KGXGKPTEFATL","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KGXGKPTEFATL7T5M","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KGXGKPTE","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:cd39f3f3e9d9d588d3f5fc8372e6ed05f940ac5e8210678dbb4dc8c15260496a","target":"graph","created_at":"2026-05-18T02:10:05Z","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":"The thermal expansion effect of silicon nanowires (SiNW) in [100], [110] and [111] directions with different sizes is theoretically investigated. At low temperatures, all SiNW studied exhibit thermal contraction effect due to the lowest energy of the bending vibration mode which has negative effect on the coefficient of thermal expansion (CTE). The CTE in [110] direction is distinctly larger than the other two growth directions because of the anisotropy of the bending mode in SiNW. Our study reveals that CTE decreases with an increase of the structure ratio $\\gamma=length/diameter$, and is neg","authors_text":"Baowen Li, Jian-Sheng Wang, Jin-Wu Jiang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-01-04T10:08:18Z","title":"Thermal contraction in silicon nanowires at low temperatures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.0467","kind":"arxiv","version":2},"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":"sha256:8ae0964d6ee61975177b90f64084af90928cd94b3ec1dc666fea2dadc506350b","target":"record","created_at":"2026-05-18T02:10:05Z","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":"cc32def143c09d72c7b261fe29b56640af13c1b72e1359240691b713edaa1626","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-01-04T10:08:18Z","title_canon_sha256":"f1bd7d8ed18d5b55e3f5420317cc539265995dc7fe44e05a8ec01e0c374d6fab"},"schema_version":"1.0","source":{"id":"1001.0467","kind":"arxiv","version":2}},"canonical_sha256":"51ae653e642826bfcfac98c91f79089b3ccbf68cbb54753a66bcace2f33b963b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"51ae653e642826bfcfac98c91f79089b3ccbf68cbb54753a66bcace2f33b963b","first_computed_at":"2026-05-18T02:10:05.429337Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:05.429337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"acmnhsvMnjRKkFxvRl1KKr9ocKQZrvTUxFTyIVgIRo0Gz90oodf5tl1LbefnofaWZojrZn5NeJamf3EUsBgaDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:05.429885Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.0467","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ae0964d6ee61975177b90f64084af90928cd94b3ec1dc666fea2dadc506350b","sha256:cd39f3f3e9d9d588d3f5fc8372e6ed05f940ac5e8210678dbb4dc8c15260496a"],"state_sha256":"ca8b539b35b86bf162576432cc92e5710e5b6f63a077103f19e97cb8e7ce8a88"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"muW54XvoL44GxVqtc4yIsUdrSlaEf/Taj0UbF19uJSk32c2k4qSfES3ueC2FE4dtAJ32rICFg99x8Q6qXThyDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T00:55:41.917544Z","bundle_sha256":"5b96c089533c5839ffd1ed8313ceca3bc4a96d47392b22a7b75542e14f6c55ba"}}