{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:E4E6VVDHTVA6Z3NZHPUP5KCHUU","short_pith_number":"pith:E4E6VVDH","canonical_record":{"source":{"id":"1204.1942","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-09T18:05:17Z","cross_cats_sorted":[],"title_canon_sha256":"a14c8a5868b0b3a6e9711c1a7ff9be763d48bc6088f689416d3df95c5f36a73b","abstract_canon_sha256":"b524dc773beeb50fcdf6ff0de5bff56bb9dbede5a4c93d1c677f9a571ca44d75"},"schema_version":"1.0"},"canonical_sha256":"2709ead4679d41ecedb93be8fea847a528b34fa9e39160df502155de30db1e5a","source":{"kind":"arxiv","id":"1204.1942","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.1942","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"arxiv_version","alias_value":"1204.1942v1","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.1942","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"pith_short_12","alias_value":"E4E6VVDHTVA6","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"E4E6VVDHTVA6Z3NZ","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"E4E6VVDH","created_at":"2026-05-18T12:27:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:E4E6VVDHTVA6Z3NZHPUP5KCHUU","target":"record","payload":{"canonical_record":{"source":{"id":"1204.1942","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-09T18:05:17Z","cross_cats_sorted":[],"title_canon_sha256":"a14c8a5868b0b3a6e9711c1a7ff9be763d48bc6088f689416d3df95c5f36a73b","abstract_canon_sha256":"b524dc773beeb50fcdf6ff0de5bff56bb9dbede5a4c93d1c677f9a571ca44d75"},"schema_version":"1.0"},"canonical_sha256":"2709ead4679d41ecedb93be8fea847a528b34fa9e39160df502155de30db1e5a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:54:05.642784Z","signature_b64":"wkv31JV3wzQnxtKF6LmLnCjyUQEBCZ/FB39pnQyWC9ZRvOFWncVKu3sF3tJqKgjuZgYNdoHE8rdDU3FGwTyCBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2709ead4679d41ecedb93be8fea847a528b34fa9e39160df502155de30db1e5a","last_reissued_at":"2026-05-18T03:54:05.642106Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:54:05.642106Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.1942","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":"2026-05-18T03:54:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gYFr10tknpBhT3ht1gYw+Z91+e1uq78NXWGan7/VBAc8LJU6bcU0g3SI+bRWcNH8U0HOT9orXfvQ6AjmH385CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:02:17.461201Z"},"content_sha256":"bc6f70499213816dc6a691b7c0d5133b3753bdd1958c2ffbb1034e6ae426ebc3","schema_version":"1.0","event_id":"sha256:bc6f70499213816dc6a691b7c0d5133b3753bdd1958c2ffbb1034e6ae426ebc3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:E4E6VVDHTVA6Z3NZHPUP5KCHUU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Frequency and phase noise of ultra-high Q silicon nitride nanomechanical resonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Hong X. Tang, King Y. Fong, Wolfram H. P. Pernice","submitted_at":"2012-04-09T18:05:17Z","abstract_excerpt":"We describe the measurement and modeling of amplitude noise and phase noise in ultra-high Q nanomechanical resonators made from stoichiometric silicon nitride. With quality factors exceeding 2 million, the resonators' noise performance is studied with high precision. We find that the amplitude noise can be well described by the thermomechanical model, however, the resonators exhibit sizable extra phase noise due to their intrinsic frequency fluctuations. We develop a method to extract the resonator frequency fluctuation of a driven resonator and obtain a noise spectrum with dependence, which c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.1942","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":"2026-05-18T03:54:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/i/d7fNk9RA8z7K39QXgGgkPakPm9pKe8y9r9qWomHPJ0AN+c3QO/rGjN9z7S1lwI5JdyNd4DN3xNOoeHxyIBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:02:17.461558Z"},"content_sha256":"d848737fb4b26051fc1f82b6fc2c257e8061c20a714a45b92c6ce4f7daf8657c","schema_version":"1.0","event_id":"sha256:d848737fb4b26051fc1f82b6fc2c257e8061c20a714a45b92c6ce4f7daf8657c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E4E6VVDHTVA6Z3NZHPUP5KCHUU/bundle.json","state_url":"https://pith.science/pith/E4E6VVDHTVA6Z3NZHPUP5KCHUU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E4E6VVDHTVA6Z3NZHPUP5KCHUU/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":"2026-06-03T11:02:17Z","links":{"resolver":"https://pith.science/pith/E4E6VVDHTVA6Z3NZHPUP5KCHUU","bundle":"https://pith.science/pith/E4E6VVDHTVA6Z3NZHPUP5KCHUU/bundle.json","state":"https://pith.science/pith/E4E6VVDHTVA6Z3NZHPUP5KCHUU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E4E6VVDHTVA6Z3NZHPUP5KCHUU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:E4E6VVDHTVA6Z3NZHPUP5KCHUU","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":"b524dc773beeb50fcdf6ff0de5bff56bb9dbede5a4c93d1c677f9a571ca44d75","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-09T18:05:17Z","title_canon_sha256":"a14c8a5868b0b3a6e9711c1a7ff9be763d48bc6088f689416d3df95c5f36a73b"},"schema_version":"1.0","source":{"id":"1204.1942","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.1942","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"arxiv_version","alias_value":"1204.1942v1","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.1942","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"pith_short_12","alias_value":"E4E6VVDHTVA6","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"E4E6VVDHTVA6Z3NZ","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"E4E6VVDH","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:d848737fb4b26051fc1f82b6fc2c257e8061c20a714a45b92c6ce4f7daf8657c","target":"graph","created_at":"2026-05-18T03:54:05Z","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":"We describe the measurement and modeling of amplitude noise and phase noise in ultra-high Q nanomechanical resonators made from stoichiometric silicon nitride. With quality factors exceeding 2 million, the resonators' noise performance is studied with high precision. We find that the amplitude noise can be well described by the thermomechanical model, however, the resonators exhibit sizable extra phase noise due to their intrinsic frequency fluctuations. We develop a method to extract the resonator frequency fluctuation of a driven resonator and obtain a noise spectrum with dependence, which c","authors_text":"Hong X. Tang, King Y. Fong, Wolfram H. P. Pernice","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-09T18:05:17Z","title":"Frequency and phase noise of ultra-high Q silicon nitride nanomechanical resonators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.1942","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:bc6f70499213816dc6a691b7c0d5133b3753bdd1958c2ffbb1034e6ae426ebc3","target":"record","created_at":"2026-05-18T03:54:05Z","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":"b524dc773beeb50fcdf6ff0de5bff56bb9dbede5a4c93d1c677f9a571ca44d75","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-09T18:05:17Z","title_canon_sha256":"a14c8a5868b0b3a6e9711c1a7ff9be763d48bc6088f689416d3df95c5f36a73b"},"schema_version":"1.0","source":{"id":"1204.1942","kind":"arxiv","version":1}},"canonical_sha256":"2709ead4679d41ecedb93be8fea847a528b34fa9e39160df502155de30db1e5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2709ead4679d41ecedb93be8fea847a528b34fa9e39160df502155de30db1e5a","first_computed_at":"2026-05-18T03:54:05.642106Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:05.642106Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wkv31JV3wzQnxtKF6LmLnCjyUQEBCZ/FB39pnQyWC9ZRvOFWncVKu3sF3tJqKgjuZgYNdoHE8rdDU3FGwTyCBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:05.642784Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.1942","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc6f70499213816dc6a691b7c0d5133b3753bdd1958c2ffbb1034e6ae426ebc3","sha256:d848737fb4b26051fc1f82b6fc2c257e8061c20a714a45b92c6ce4f7daf8657c"],"state_sha256":"65105499d9fe0fd1f059c80a9ecc04d733e8489607c1a40e3d6f0c7ffae7bb19"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wTNOCjmC0tzilLTHiQbzQgiyM+0q7mkSSgv26Q+azEJMLghqk1Az3Qa7Pik5yucF37sy9dT9JM2h7D1BQnh4Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T11:02:17.463554Z","bundle_sha256":"ef284aceb604ad702a8aead66310a61fd3150736b8f231d584abc00b0f74dac4"}}