{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:7ZDPME5DBRY6K76FC7HF3OQJ3J","short_pith_number":"pith:7ZDPME5D","canonical_record":{"source":{"id":"1907.04189","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-07-09T14:31:34Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"title_canon_sha256":"3ee808b2685330fb1a83aaed73d2a535af4902baf8b851afb070309eb49bdf09","abstract_canon_sha256":"3910a995c1c78d78affc7ac59162fc29da1cfc03ba8fa1519b717e70d406abeb"},"schema_version":"1.0"},"canonical_sha256":"fe46f613a30c71e57fc517ce5dba09da41f2521d4206df2cee3c3c1992aefe90","source":{"kind":"arxiv","id":"1907.04189","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.04189","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"arxiv_version","alias_value":"1907.04189v2","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.04189","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"pith_short_12","alias_value":"7ZDPME5DBRY6","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"pith_short_16","alias_value":"7ZDPME5DBRY6K76F","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"pith_short_8","alias_value":"7ZDPME5D","created_at":"2026-07-05T01:32:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:7ZDPME5DBRY6K76FC7HF3OQJ3J","target":"record","payload":{"canonical_record":{"source":{"id":"1907.04189","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-07-09T14:31:34Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"title_canon_sha256":"3ee808b2685330fb1a83aaed73d2a535af4902baf8b851afb070309eb49bdf09","abstract_canon_sha256":"3910a995c1c78d78affc7ac59162fc29da1cfc03ba8fa1519b717e70d406abeb"},"schema_version":"1.0"},"canonical_sha256":"fe46f613a30c71e57fc517ce5dba09da41f2521d4206df2cee3c3c1992aefe90","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:32:35.761826Z","signature_b64":"S3INjDo4oYSSaYtTOaE5YI2BLj62EdtnyIY6Eb9CtDmQ03PeiaPaLI5vshMwGcCr1QmrWprXt7ifwFYMXIBgAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe46f613a30c71e57fc517ce5dba09da41f2521d4206df2cee3c3c1992aefe90","last_reissued_at":"2026-07-05T01:32:35.761394Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:32:35.761394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.04189","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":"2026-07-05T01:32:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VXkUgyNbd6pH43eAipqc9z6Y6rvdBPm/mI1hKdtsigx4tkujqDI23jfQIjWPasWkbmvq8T7CG5FixpQpJ+fxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T20:18:01.603070Z"},"content_sha256":"3e923560c53d776789fa973aabcdcf8b7a3c88e3cedc0d237cddb497fbe1d5b0","schema_version":"1.0","event_id":"sha256:3e923560c53d776789fa973aabcdcf8b7a3c88e3cedc0d237cddb497fbe1d5b0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:7ZDPME5DBRY6K76FC7HF3OQJ3J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Properties of Nanocrystalline Silicon Probed by Optomechanics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","physics.optics"],"primary_cat":"physics.app-ph","authors_text":"Alejandro Martinez, Amadeu Griol, Arnaud Devos, Clivia M. Sotomayor-Torres, Daniel Navarro-Urrios, Emigdio Chavez-Angel, Guillermo Arregui, Jaakko Saarilahti, Jeremie Maire, Jouni Ahopelto, Kestutis Grigoras, Laurent Bellieres, Martin F. Colombano, Nestor E. Capuj, Tapani Makkonen, Teija Hakkinen","submitted_at":"2019-07-09T14:31:34Z","abstract_excerpt":"Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimise their functionality for devices and applications. Here we report on the optical, mechanical and thermal properties of nanocrystalline silicon probed by means of optomechanical nanobeams to extract information of the dynamics of optical absorption, mechanical losses, heat generation and dissipation. The optomechanical nanobeams are fabricated using nanocrystalline films prepared by annealing amorphous silicon layers at dif"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.04189","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.04189/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":"2026-07-05T01:32:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hln49XpJp0Nz5K+ZmTX4OOyLTjM0ZDFCv8zkj2frsFBsyW6hWP7woFm5qN/JKjNF00kc2ucj8iG6PHKXfijwCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T20:18:01.605081Z"},"content_sha256":"6c58dbcd4a50fa0a4596a9d53372f48ecc70dcf5949d2f5ef8389b4aba9d1d0c","schema_version":"1.0","event_id":"sha256:6c58dbcd4a50fa0a4596a9d53372f48ecc70dcf5949d2f5ef8389b4aba9d1d0c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7ZDPME5DBRY6K76FC7HF3OQJ3J/bundle.json","state_url":"https://pith.science/pith/7ZDPME5DBRY6K76FC7HF3OQJ3J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7ZDPME5DBRY6K76FC7HF3OQJ3J/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":"2026-08-17T20:18:01Z","links":{"resolver":"https://pith.science/pith/7ZDPME5DBRY6K76FC7HF3OQJ3J","bundle":"https://pith.science/pith/7ZDPME5DBRY6K76FC7HF3OQJ3J/bundle.json","state":"https://pith.science/pith/7ZDPME5DBRY6K76FC7HF3OQJ3J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7ZDPME5DBRY6K76FC7HF3OQJ3J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:7ZDPME5DBRY6K76FC7HF3OQJ3J","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":"3910a995c1c78d78affc7ac59162fc29da1cfc03ba8fa1519b717e70d406abeb","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-07-09T14:31:34Z","title_canon_sha256":"3ee808b2685330fb1a83aaed73d2a535af4902baf8b851afb070309eb49bdf09"},"schema_version":"1.0","source":{"id":"1907.04189","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.04189","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"arxiv_version","alias_value":"1907.04189v2","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.04189","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"pith_short_12","alias_value":"7ZDPME5DBRY6","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"pith_short_16","alias_value":"7ZDPME5DBRY6K76F","created_at":"2026-07-05T01:32:35Z"},{"alias_kind":"pith_short_8","alias_value":"7ZDPME5D","created_at":"2026-07-05T01:32:35Z"}],"graph_snapshots":[{"event_id":"sha256:6c58dbcd4a50fa0a4596a9d53372f48ecc70dcf5949d2f5ef8389b4aba9d1d0c","target":"graph","created_at":"2026-07-05T01:32:35Z","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/1907.04189/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimise their functionality for devices and applications. Here we report on the optical, mechanical and thermal properties of nanocrystalline silicon probed by means of optomechanical nanobeams to extract information of the dynamics of optical absorption, mechanical losses, heat generation and dissipation. The optomechanical nanobeams are fabricated using nanocrystalline films prepared by annealing amorphous silicon layers at dif","authors_text":"Alejandro Martinez, Amadeu Griol, Arnaud Devos, Clivia M. Sotomayor-Torres, Daniel Navarro-Urrios, Emigdio Chavez-Angel, Guillermo Arregui, Jaakko Saarilahti, Jeremie Maire, Jouni Ahopelto, Kestutis Grigoras, Laurent Bellieres, Martin F. Colombano, Nestor E. Capuj, Tapani Makkonen, Teija Hakkinen","cross_cats":["cond-mat.mtrl-sci","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-07-09T14:31:34Z","title":"Properties of Nanocrystalline Silicon Probed by Optomechanics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.04189","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":"sha256:3e923560c53d776789fa973aabcdcf8b7a3c88e3cedc0d237cddb497fbe1d5b0","target":"record","created_at":"2026-07-05T01:32:35Z","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":"3910a995c1c78d78affc7ac59162fc29da1cfc03ba8fa1519b717e70d406abeb","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-07-09T14:31:34Z","title_canon_sha256":"3ee808b2685330fb1a83aaed73d2a535af4902baf8b851afb070309eb49bdf09"},"schema_version":"1.0","source":{"id":"1907.04189","kind":"arxiv","version":2}},"canonical_sha256":"fe46f613a30c71e57fc517ce5dba09da41f2521d4206df2cee3c3c1992aefe90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe46f613a30c71e57fc517ce5dba09da41f2521d4206df2cee3c3c1992aefe90","first_computed_at":"2026-07-05T01:32:35.761394Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:32:35.761394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S3INjDo4oYSSaYtTOaE5YI2BLj62EdtnyIY6Eb9CtDmQ03PeiaPaLI5vshMwGcCr1QmrWprXt7ifwFYMXIBgAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:32:35.761826Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.04189","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e923560c53d776789fa973aabcdcf8b7a3c88e3cedc0d237cddb497fbe1d5b0","sha256:6c58dbcd4a50fa0a4596a9d53372f48ecc70dcf5949d2f5ef8389b4aba9d1d0c"],"state_sha256":"75c66170407cc5f0769d1ea5f91c099db0dcc33d947e0096adc0987ed292b4ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KhfNsenUQo3DgcM6nUBVE9xOjcxXV0GYlUoSYorWOT7BRp58PteT0cVlUwdHiWUIYqL6WFZ+KWmiU10e8ta/Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T20:18:01.614425Z","bundle_sha256":"ac20771d5bc5dfda7bb60e966a1e57437e59f4bd88eb786504e1bd8791ba88f4"}}