{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:N2DRVNWXO76IUVIGJOVWWUXEGO","short_pith_number":"pith:N2DRVNWX","schema_version":"1.0","canonical_sha256":"6e871ab6d777fc8a55064bab6b52e43393a24794186d02e53cadc0d1f37c3bab","source":{"kind":"arxiv","id":"1211.4199","version":1},"attestation_state":"computed","paper":{"title":"Enhancement of sound in chirped sonic crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Cebrecos, K. Staliunas, R. Pic\\'o, V. J. S\\'anchez-Morcillo, V. Romero-Garc\\'ia","submitted_at":"2012-11-18T07:02:02Z","abstract_excerpt":"We propose and experimentally demonstrate a novel mechanism of sound wave concentration based on soft reflections in chirped sonic crystals. The reported controlled field enhancement occurs at around particular (bright) planes in the crystal, and is related to a progressive slowing down of the sound wave as it propagates along the material. At these bright planes, a substantial concentration of the energy (with a local increase up to 20 times) was obtained for a linear chirp and for frequencies around the first band gap. A simple couple mode theory is proposed, that interprets and estimates th"},"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":"1211.4199","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-18T07:02:02Z","cross_cats_sorted":[],"title_canon_sha256":"d9983abea4efefa72a8090d1a342b0787f891795660ab1c0f9b5b546f7a634bb","abstract_canon_sha256":"32ebe60de3488765fae5b4cef5cb5cd14db7e464d05d4710ff69122fa02c421a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:09.959498Z","signature_b64":"rArnD90hpoXShyzZbIG8pQBBirlSVGwQsIM86SwoMFnROtJAiuiHZicozYAokHeaY6WvNELGp7ryfST8Bv+TCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e871ab6d777fc8a55064bab6b52e43393a24794186d02e53cadc0d1f37c3bab","last_reissued_at":"2026-05-18T01:53:09.959121Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:09.959121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Enhancement of sound in chirped sonic crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Cebrecos, K. Staliunas, R. Pic\\'o, V. J. S\\'anchez-Morcillo, V. Romero-Garc\\'ia","submitted_at":"2012-11-18T07:02:02Z","abstract_excerpt":"We propose and experimentally demonstrate a novel mechanism of sound wave concentration based on soft reflections in chirped sonic crystals. The reported controlled field enhancement occurs at around particular (bright) planes in the crystal, and is related to a progressive slowing down of the sound wave as it propagates along the material. At these bright planes, a substantial concentration of the energy (with a local increase up to 20 times) was obtained for a linear chirp and for frequencies around the first band gap. A simple couple mode theory is proposed, that interprets and estimates th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.4199","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":"1211.4199","created_at":"2026-05-18T01:53:09.959178+00:00"},{"alias_kind":"arxiv_version","alias_value":"1211.4199v1","created_at":"2026-05-18T01:53:09.959178+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.4199","created_at":"2026-05-18T01:53:09.959178+00:00"},{"alias_kind":"pith_short_12","alias_value":"N2DRVNWXO76I","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_16","alias_value":"N2DRVNWXO76IUVIG","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_8","alias_value":"N2DRVNWX","created_at":"2026-05-18T12:27:16.716162+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/N2DRVNWXO76IUVIGJOVWWUXEGO","json":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO.json","graph_json":"https://pith.science/api/pith-number/N2DRVNWXO76IUVIGJOVWWUXEGO/graph.json","events_json":"https://pith.science/api/pith-number/N2DRVNWXO76IUVIGJOVWWUXEGO/events.json","paper":"https://pith.science/paper/N2DRVNWX"},"agent_actions":{"view_html":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO","download_json":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO.json","view_paper":"https://pith.science/paper/N2DRVNWX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1211.4199&json=true","fetch_graph":"https://pith.science/api/pith-number/N2DRVNWXO76IUVIGJOVWWUXEGO/graph.json","fetch_events":"https://pith.science/api/pith-number/N2DRVNWXO76IUVIGJOVWWUXEGO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO/action/storage_attestation","attest_author":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO/action/author_attestation","sign_citation":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO/action/citation_signature","submit_replication":"https://pith.science/pith/N2DRVNWXO76IUVIGJOVWWUXEGO/action/replication_record"}},"created_at":"2026-05-18T01:53:09.959178+00:00","updated_at":"2026-05-18T01:53:09.959178+00:00"}