{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:XL7HBXUX4D3HVWNIO3BPYQMLHT","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":"c8bdbc52bd5d280dcbd61a45f643cb46c67cf4b52a0a2f4823648ee6a53ae909","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-02T11:31:53Z","title_canon_sha256":"f41dee4c878818d44b2fab6b986f3dbf17a0db1a6b6445c08c3a864b7603e29c"},"schema_version":"1.0","source":{"id":"0904.0366","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.0366","created_at":"2026-05-18T02:24:56Z"},{"alias_kind":"arxiv_version","alias_value":"0904.0366v3","created_at":"2026-05-18T02:24:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.0366","created_at":"2026-05-18T02:24:56Z"},{"alias_kind":"pith_short_12","alias_value":"XL7HBXUX4D3H","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"XL7HBXUX4D3HVWNI","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"XL7HBXUX","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:362811cf2f5a9979cb5d952adafae052cc77f705d3e9c15d8efd98aada2a1426","target":"graph","created_at":"2026-05-18T02:24:56Z","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 present a theoretical framework allowing to properly address the nature of surface-like eigenmodes in a hypersonic surface phononic crystal, a composite structure made of periodic metal stripes of nanometer size and periodicity of 1 micron, deposited over a semi-infinite silicon substrate. In surface-based phononic crystals there is no distinction between the eigenmodes of the periodically nanostructured overlayer and the surface acoustic modes of the semi-infinite substrate, the solution of the elastic equation being a pseudo-surface acoustic wave partially localized on the nanostructures ","authors_text":"B. Revaz, C. Giannetti, D. Nardi, F. Banfi, F. Parmigiani, G. Ferrini","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-02T11:31:53Z","title":"Pseudo-surface acoustic waves in hypersonic surface phononic crystals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.0366","kind":"arxiv","version":3},"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:bee13389a74a17007150f3a32c731ca61d59e97bfda3d5d5de398bc29be536b1","target":"record","created_at":"2026-05-18T02:24:56Z","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":"c8bdbc52bd5d280dcbd61a45f643cb46c67cf4b52a0a2f4823648ee6a53ae909","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-02T11:31:53Z","title_canon_sha256":"f41dee4c878818d44b2fab6b986f3dbf17a0db1a6b6445c08c3a864b7603e29c"},"schema_version":"1.0","source":{"id":"0904.0366","kind":"arxiv","version":3}},"canonical_sha256":"bafe70de97e0f67ad9a876c2fc418b3ceffca014e91e9d99d9b20d35dc8d33d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bafe70de97e0f67ad9a876c2fc418b3ceffca014e91e9d99d9b20d35dc8d33d6","first_computed_at":"2026-05-18T02:24:56.123082Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:24:56.123082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TvY88S4VAz8FM6LoSy2fVxZqgW+sGspMXVduZzEfppWibN9fsLzj0mCbmeSXgmMPlTxkTDr8uEk0fCgB5uWWCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:24:56.123781Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.0366","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bee13389a74a17007150f3a32c731ca61d59e97bfda3d5d5de398bc29be536b1","sha256:362811cf2f5a9979cb5d952adafae052cc77f705d3e9c15d8efd98aada2a1426"],"state_sha256":"a1989c21e2b316ca9ad61b661ac8c5010ba72edf43cc13aa19fb0d4314bae5e1"}