{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:FL4X5D44J2BRQHQJCHO5QLXKLC","short_pith_number":"pith:FL4X5D44","schema_version":"1.0","canonical_sha256":"2af97e8f9c4e83181e0911ddd82eea589ce9f54dfd7ac6bff670adf944a5471d","source":{"kind":"arxiv","id":"1405.7200","version":1},"attestation_state":"computed","paper":{"title":"Acoustic metamaterial absorbers based on confined sonic crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jos\\'e S\\'anchez-Dehesa, Matthew D. Guild, Victor M. Garcia-Chocano, Weiwei Kan","submitted_at":"2014-05-28T11:18:41Z","abstract_excerpt":"Theoretical, numerical and experimental results examining thermoviscous losses in sonic crystals are presented in this work, enabling the fabrication and characterization of an acoustic metamaterial absorber with complex-valued anisotropic inertia. The formulations developed can be written with no unknown or empirical coefficients, due to the structured lattice of the sonic crystals and organized layering scheme, and it is shown that higher filling fraction arrangements can be used to provide a large enhancement in the loss factor. To accurately describe these structures in a realizable experi"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1405.7200","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-28T11:18:41Z","cross_cats_sorted":[],"title_canon_sha256":"ca446421cb88fe9917e1875d9d05acfee3f22887bd4bafc0be23e5f81420d047","abstract_canon_sha256":"beae07cb7252f632c43f4f9f4bacbfc3ac3b8951b1471891a11f980e0b902de9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:05.426673Z","signature_b64":"t1gSNC76itNJ9NgEVnfbP8erc6pF3K3OFtxG4ehS+1NyDY4caO8hS+P6/rZpFVtX/KnS9KHk4ToYpMQiW1TXCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2af97e8f9c4e83181e0911ddd82eea589ce9f54dfd7ac6bff670adf944a5471d","last_reissued_at":"2026-05-18T01:43:05.426124Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:05.426124Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Acoustic metamaterial absorbers based on confined sonic crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jos\\'e S\\'anchez-Dehesa, Matthew D. Guild, Victor M. Garcia-Chocano, Weiwei Kan","submitted_at":"2014-05-28T11:18:41Z","abstract_excerpt":"Theoretical, numerical and experimental results examining thermoviscous losses in sonic crystals are presented in this work, enabling the fabrication and characterization of an acoustic metamaterial absorber with complex-valued anisotropic inertia. The formulations developed can be written with no unknown or empirical coefficients, due to the structured lattice of the sonic crystals and organized layering scheme, and it is shown that higher filling fraction arrangements can be used to provide a large enhancement in the loss factor. To accurately describe these structures in a realizable experi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7200","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1405.7200","created_at":"2026-05-18T01:43:05.426194+00:00"},{"alias_kind":"arxiv_version","alias_value":"1405.7200v1","created_at":"2026-05-18T01:43:05.426194+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7200","created_at":"2026-05-18T01:43:05.426194+00:00"},{"alias_kind":"pith_short_12","alias_value":"FL4X5D44J2BR","created_at":"2026-05-18T12:28:28.263976+00:00"},{"alias_kind":"pith_short_16","alias_value":"FL4X5D44J2BRQHQJ","created_at":"2026-05-18T12:28:28.263976+00:00"},{"alias_kind":"pith_short_8","alias_value":"FL4X5D44","created_at":"2026-05-18T12:28:28.263976+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC","json":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC.json","graph_json":"https://pith.science/api/pith-number/FL4X5D44J2BRQHQJCHO5QLXKLC/graph.json","events_json":"https://pith.science/api/pith-number/FL4X5D44J2BRQHQJCHO5QLXKLC/events.json","paper":"https://pith.science/paper/FL4X5D44"},"agent_actions":{"view_html":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC","download_json":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC.json","view_paper":"https://pith.science/paper/FL4X5D44","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1405.7200&json=true","fetch_graph":"https://pith.science/api/pith-number/FL4X5D44J2BRQHQJCHO5QLXKLC/graph.json","fetch_events":"https://pith.science/api/pith-number/FL4X5D44J2BRQHQJCHO5QLXKLC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC/action/storage_attestation","attest_author":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC/action/author_attestation","sign_citation":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC/action/citation_signature","submit_replication":"https://pith.science/pith/FL4X5D44J2BRQHQJCHO5QLXKLC/action/replication_record"}},"created_at":"2026-05-18T01:43:05.426194+00:00","updated_at":"2026-05-18T01:43:05.426194+00:00"}