{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:73F6NGPUCXI5XURLKHQWRNVTHY","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":"aacdb0c4998176491c97fd8a549f344d2b520fda19d5538e9ead1148cb44c63f","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-03-13T06:31:54Z","title_canon_sha256":"85e634644f68cb6db7180345f0dc5d1ce3aa759cae1934133d5072fb946f5f17"},"schema_version":"1.0","source":{"id":"2403.15427","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.15427","created_at":"2026-07-05T08:00:43Z"},{"alias_kind":"arxiv_version","alias_value":"2403.15427v2","created_at":"2026-07-05T08:00:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.15427","created_at":"2026-07-05T08:00:43Z"},{"alias_kind":"pith_short_12","alias_value":"73F6NGPUCXI5","created_at":"2026-07-05T08:00:43Z"},{"alias_kind":"pith_short_16","alias_value":"73F6NGPUCXI5XURL","created_at":"2026-07-05T08:00:43Z"},{"alias_kind":"pith_short_8","alias_value":"73F6NGPU","created_at":"2026-07-05T08:00:43Z"}],"graph_snapshots":[{"event_id":"sha256:9231a1b7cedee1166d2cdd1bc04646cd6302241d84640cf7747448e9fcd73374","target":"graph","created_at":"2026-07-05T08:00:43Z","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/2403.15427/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"IoT sensors are crucial for visualizing multidimensional and multimodal information and enabling future IT applications/services such as cyber-physical space, digital twins, autonomous driving, smart cities, and virtual/augmented reality (VR or AR). However, IoT sensors need to be battery-free to realistically manage and maintain the growing number of available sensing devices. Here, we provide a novel sensor design approach that employs metasurfaces to enable multifunctional sensing without requiring an external power source. Importantly, unlike existing metasurface-based sensors, our metasur","authors_text":"Akira Uchiyama, Ashif A. Fathnan, Hiroki Wakatsuchi, Kosei Asano, Kosuke Ide, Masaya Tashiro, Satoshi Ishii, Yuta Sugiura","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-03-13T06:31:54Z","title":"Metasurface-Enabled Multifunctional Single-Frequency Sensors without External Power"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.15427","kind":"arxiv","version":2},"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:b925218e9a0b65644954eb567c1b58be8e102fed60655c656c954cc9971468ad","target":"record","created_at":"2026-07-05T08:00:43Z","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":"aacdb0c4998176491c97fd8a549f344d2b520fda19d5538e9ead1148cb44c63f","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-03-13T06:31:54Z","title_canon_sha256":"85e634644f68cb6db7180345f0dc5d1ce3aa759cae1934133d5072fb946f5f17"},"schema_version":"1.0","source":{"id":"2403.15427","kind":"arxiv","version":2}},"canonical_sha256":"fecbe699f415d1dbd22b51e168b6b33e1a310bb2e5537de11aa609be4cd64b62","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fecbe699f415d1dbd22b51e168b6b33e1a310bb2e5537de11aa609be4cd64b62","first_computed_at":"2026-07-05T08:00:43.315286Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:00:43.315286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FKbMElTRh6KYMjqfak4EHof75Y6EMe7u1c+GXzZWPpYtlqrKIPTygB+eWD/glazdb/Dg8RxSROxGOiC4YNCqBw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:00:43.315709Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.15427","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b925218e9a0b65644954eb567c1b58be8e102fed60655c656c954cc9971468ad","sha256:9231a1b7cedee1166d2cdd1bc04646cd6302241d84640cf7747448e9fcd73374"],"state_sha256":"656de3081483b6f3d62b4d0b6d7e027b729ac28df887705571b490679083484d"}