{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:ZLG24ATPUFCGJFCZSFW25ZMBHA","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":"a5507a86fb3eb4ecc56a77eb6ab4b29ef4c32898c1a7e05c076f88d39d1649c3","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-30T08:46:37Z","title_canon_sha256":"02322faeb02b7a128b156edaa86c22c9c8a30169f77e2c6fa89ccc3e4f56c10e"},"schema_version":"1.0","source":{"id":"2112.14969","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.14969","created_at":"2026-07-05T03:44:35Z"},{"alias_kind":"arxiv_version","alias_value":"2112.14969v1","created_at":"2026-07-05T03:44:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.14969","created_at":"2026-07-05T03:44:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZLG24ATPUFCG","created_at":"2026-07-05T03:44:35Z"},{"alias_kind":"pith_short_16","alias_value":"ZLG24ATPUFCGJFCZ","created_at":"2026-07-05T03:44:35Z"},{"alias_kind":"pith_short_8","alias_value":"ZLG24ATP","created_at":"2026-07-05T03:44:35Z"}],"graph_snapshots":[{"event_id":"sha256:cefc7300a479ad10c3deb4edd9e6dd17164d7b40d132b04979c7a0a6714f223b","target":"graph","created_at":"2026-07-05T03:44:35Z","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/2112.14969/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Conventional mechanical antennas provide a strategy in long-wave communication with a surprisingly compact size below 1/1,000 of the wavelength. However, the narrow bandwidth and weak field intensity seriously hamper its practical applications. Here, we present a mechanical antenna based on the electrostrictive effect of PMN-PT-based relaxor ferroelectric ceramic to improve radiation capacity and achieve ultra-wideband characteristics (10 kHz - 1 MHz, the relative bandwidth is beyond 196%). Determined by the different underlying mechanism, the mechanical antenna based on the electrostrictive e","authors_text":"Fangzhou Yao, Jianchun Xu, Jinqing Cao, Ke Bi, Ming Lei, Shaolong Yang, Wen Gong, Xi Wen, Xuchao Pan, Zhao Li","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-30T08:46:37Z","title":"Ultra-wideband electrostrictive mechanical antenna"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.14969","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":"sha256:023a1a06d99e99a5fc0e823576e373947b07b7dd5579d4e589c2ee8cfdcb9194","target":"record","created_at":"2026-07-05T03:44:35Z","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":"a5507a86fb3eb4ecc56a77eb6ab4b29ef4c32898c1a7e05c076f88d39d1649c3","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-30T08:46:37Z","title_canon_sha256":"02322faeb02b7a128b156edaa86c22c9c8a30169f77e2c6fa89ccc3e4f56c10e"},"schema_version":"1.0","source":{"id":"2112.14969","kind":"arxiv","version":1}},"canonical_sha256":"cacdae026fa144649459916daee581381c5df441d7e1dd8691a34251445dd775","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cacdae026fa144649459916daee581381c5df441d7e1dd8691a34251445dd775","first_computed_at":"2026-07-05T03:44:35.477098Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:44:35.477098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nsz4g07F8Vhsn7ZHkkCeZ8mUztYnjGKv/trRWny2WuNwEo2WKPxwo1BNyj8MEEJm6nMX0cWyu9gLkuNK8oIYAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:44:35.477493Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.14969","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:023a1a06d99e99a5fc0e823576e373947b07b7dd5579d4e589c2ee8cfdcb9194","sha256:cefc7300a479ad10c3deb4edd9e6dd17164d7b40d132b04979c7a0a6714f223b"],"state_sha256":"7339c276246f7ba688e1d4714b4623b12d03aad0aabe449617332042b46c528f"}