{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:QJTUUTU2J6MTYI6IBMFB7HQUQV","short_pith_number":"pith:QJTUUTU2","canonical_record":{"source":{"id":"1406.3552","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-06-13T14:45:13Z","cross_cats_sorted":[],"title_canon_sha256":"07c389aafea4fdb3f3a87566324ce34c8d9c201b90a96e74091d1ca84b2b7d6b","abstract_canon_sha256":"e0d2fb80614fc0d0ca6750477a2d320d978029b81ff517aaf42f89db688c86fe"},"schema_version":"1.0"},"canonical_sha256":"82674a4e9a4f993c23c80b0a1f9e148563a69ae7964c876adde1e2f154650ee1","source":{"kind":"arxiv","id":"1406.3552","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.3552","created_at":"2026-05-18T02:49:46Z"},{"alias_kind":"arxiv_version","alias_value":"1406.3552v1","created_at":"2026-05-18T02:49:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.3552","created_at":"2026-05-18T02:49:46Z"},{"alias_kind":"pith_short_12","alias_value":"QJTUUTU2J6MT","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QJTUUTU2J6MTYI6I","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QJTUUTU2","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:QJTUUTU2J6MTYI6IBMFB7HQUQV","target":"record","payload":{"canonical_record":{"source":{"id":"1406.3552","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-06-13T14:45:13Z","cross_cats_sorted":[],"title_canon_sha256":"07c389aafea4fdb3f3a87566324ce34c8d9c201b90a96e74091d1ca84b2b7d6b","abstract_canon_sha256":"e0d2fb80614fc0d0ca6750477a2d320d978029b81ff517aaf42f89db688c86fe"},"schema_version":"1.0"},"canonical_sha256":"82674a4e9a4f993c23c80b0a1f9e148563a69ae7964c876adde1e2f154650ee1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:49:46.468122Z","signature_b64":"B4MW+56hWeQRRIocSIl3SKn6HZGliBKYDTtHi/jVJRoPEFgoEYhmEmsILBK0z6YBmxeECzrbnMhcneas/AKhDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82674a4e9a4f993c23c80b0a1f9e148563a69ae7964c876adde1e2f154650ee1","last_reissued_at":"2026-05-18T02:49:46.467690Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:49:46.467690Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.3552","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":"2026-05-18T02:49:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n+VZo30HZzSqSDSAEdlvauBvqEa3UOKir36rz8ZINyVjDo0tJbYXV2VD/EKqvWYUzplvo2I3OzBejICYeHxVDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T16:34:18.807975Z"},"content_sha256":"8296e6f9d24ab69f72e6f78e66a661e532f3faf2727eded048d30a3836f2204f","schema_version":"1.0","event_id":"sha256:8296e6f9d24ab69f72e6f78e66a661e532f3faf2727eded048d30a3836f2204f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:QJTUUTU2J6MTYI6IBMFB7HQUQV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Highly efficient anomalous refraction of airborne sound through ultrathin metasurfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.other","authors_text":"Chunyin Qiu, Jiuyang Lu, Kun Tang, Manzhu Ke, Yangtao Ye, Zhengyou Liu","submitted_at":"2014-06-13T14:45:13Z","abstract_excerpt":"Similar to their optic counterparts, acoustic components are anticipated to flexibly tailor the propagation of sound. However, the practical applications, e.g. for audible sound with large wavelengths, are frequently hampered by the issue of device thickness. Here we present an effective design of metasurface structures that can deflect the transmitted airborne sound in an anomalous way. This flat lens, made of spatially varied coiling-slit subunits, has a thickness of deep subwavelength. By elaborately optimizing its microstructures, the proposed lens exhibits high performance in steering sou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.3552","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":"2026-05-18T02:49:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RVJvrPZzG9jSmbwqT4nsTb+/aiv08LDHpyCXAj8QfxbLNQlgRacfkr3tCLOzIxjOz9P0yW2nlBvSew3kOX2tBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T16:34:18.808613Z"},"content_sha256":"62bab3cad071a421d8bb8d0a321ae1202b8cc3552f792d2c911ebb5c803e90bb","schema_version":"1.0","event_id":"sha256:62bab3cad071a421d8bb8d0a321ae1202b8cc3552f792d2c911ebb5c803e90bb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QJTUUTU2J6MTYI6IBMFB7HQUQV/bundle.json","state_url":"https://pith.science/pith/QJTUUTU2J6MTYI6IBMFB7HQUQV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QJTUUTU2J6MTYI6IBMFB7HQUQV/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":"2026-05-27T16:34:18Z","links":{"resolver":"https://pith.science/pith/QJTUUTU2J6MTYI6IBMFB7HQUQV","bundle":"https://pith.science/pith/QJTUUTU2J6MTYI6IBMFB7HQUQV/bundle.json","state":"https://pith.science/pith/QJTUUTU2J6MTYI6IBMFB7HQUQV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QJTUUTU2J6MTYI6IBMFB7HQUQV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QJTUUTU2J6MTYI6IBMFB7HQUQV","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":"e0d2fb80614fc0d0ca6750477a2d320d978029b81ff517aaf42f89db688c86fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-06-13T14:45:13Z","title_canon_sha256":"07c389aafea4fdb3f3a87566324ce34c8d9c201b90a96e74091d1ca84b2b7d6b"},"schema_version":"1.0","source":{"id":"1406.3552","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.3552","created_at":"2026-05-18T02:49:46Z"},{"alias_kind":"arxiv_version","alias_value":"1406.3552v1","created_at":"2026-05-18T02:49:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.3552","created_at":"2026-05-18T02:49:46Z"},{"alias_kind":"pith_short_12","alias_value":"QJTUUTU2J6MT","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QJTUUTU2J6MTYI6I","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QJTUUTU2","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:62bab3cad071a421d8bb8d0a321ae1202b8cc3552f792d2c911ebb5c803e90bb","target":"graph","created_at":"2026-05-18T02:49:46Z","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":"Similar to their optic counterparts, acoustic components are anticipated to flexibly tailor the propagation of sound. However, the practical applications, e.g. for audible sound with large wavelengths, are frequently hampered by the issue of device thickness. Here we present an effective design of metasurface structures that can deflect the transmitted airborne sound in an anomalous way. This flat lens, made of spatially varied coiling-slit subunits, has a thickness of deep subwavelength. By elaborately optimizing its microstructures, the proposed lens exhibits high performance in steering sou","authors_text":"Chunyin Qiu, Jiuyang Lu, Kun Tang, Manzhu Ke, Yangtao Ye, Zhengyou Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-06-13T14:45:13Z","title":"Highly efficient anomalous refraction of airborne sound through ultrathin metasurfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.3552","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":"sha256:8296e6f9d24ab69f72e6f78e66a661e532f3faf2727eded048d30a3836f2204f","target":"record","created_at":"2026-05-18T02:49:46Z","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":"e0d2fb80614fc0d0ca6750477a2d320d978029b81ff517aaf42f89db688c86fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-06-13T14:45:13Z","title_canon_sha256":"07c389aafea4fdb3f3a87566324ce34c8d9c201b90a96e74091d1ca84b2b7d6b"},"schema_version":"1.0","source":{"id":"1406.3552","kind":"arxiv","version":1}},"canonical_sha256":"82674a4e9a4f993c23c80b0a1f9e148563a69ae7964c876adde1e2f154650ee1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82674a4e9a4f993c23c80b0a1f9e148563a69ae7964c876adde1e2f154650ee1","first_computed_at":"2026-05-18T02:49:46.467690Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:49:46.467690Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B4MW+56hWeQRRIocSIl3SKn6HZGliBKYDTtHi/jVJRoPEFgoEYhmEmsILBK0z6YBmxeECzrbnMhcneas/AKhDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:49:46.468122Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.3552","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8296e6f9d24ab69f72e6f78e66a661e532f3faf2727eded048d30a3836f2204f","sha256:62bab3cad071a421d8bb8d0a321ae1202b8cc3552f792d2c911ebb5c803e90bb"],"state_sha256":"4d3708aa1ec412d060c86131332e2e46575dd2f964543c881e978bef0585fcd4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pn1Z7N4nr35SRGmevCWZtR3RrVnyzSRLU57YuwX7qB72dCeBpKCvG7bsbI9dHimv2ymrmD3MzaG0xBNzyq7YCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T16:34:18.812230Z","bundle_sha256":"a06d219d5cff6f4f31b455e3a7a7fc057e864592a0eaa5e8794e5a68f2b4371d"}}