{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:2FPCDG6FHQIFVNNE4XKX4VU5RR","short_pith_number":"pith:2FPCDG6F","canonical_record":{"source":{"id":"1802.01202","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-02-04T21:59:29Z","cross_cats_sorted":[],"title_canon_sha256":"2f763629e73288dd005a7dde97cf776cfbd378dca833caba7b320abad22e9a2b","abstract_canon_sha256":"5e6a43b28a298a284bf68ab3e03726a8bd49a7fa861b9ec4d194faa31e323e38"},"schema_version":"1.0"},"canonical_sha256":"d15e219bc53c105ab5a4e5d57e569d8c43c3696a9760deb5b858b4139c1bb02b","source":{"kind":"arxiv","id":"1802.01202","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01202","created_at":"2026-05-18T00:24:27Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01202v1","created_at":"2026-05-18T00:24:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01202","created_at":"2026-05-18T00:24:27Z"},{"alias_kind":"pith_short_12","alias_value":"2FPCDG6FHQIF","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2FPCDG6FHQIFVNNE","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2FPCDG6F","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:2FPCDG6FHQIFVNNE4XKX4VU5RR","target":"record","payload":{"canonical_record":{"source":{"id":"1802.01202","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-02-04T21:59:29Z","cross_cats_sorted":[],"title_canon_sha256":"2f763629e73288dd005a7dde97cf776cfbd378dca833caba7b320abad22e9a2b","abstract_canon_sha256":"5e6a43b28a298a284bf68ab3e03726a8bd49a7fa861b9ec4d194faa31e323e38"},"schema_version":"1.0"},"canonical_sha256":"d15e219bc53c105ab5a4e5d57e569d8c43c3696a9760deb5b858b4139c1bb02b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:27.073017Z","signature_b64":"b1RQhYMZLStWtdXMjvQ1N/qeBw8vdMfFJZujOVbY2kI+KHLwFtx9S28T0oRCIRvTgH3YOmiyqEVuQzkEVmX1DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d15e219bc53c105ab5a4e5d57e569d8c43c3696a9760deb5b858b4139c1bb02b","last_reissued_at":"2026-05-18T00:24:27.072561Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:27.072561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.01202","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":"2026-05-18T00:24:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BTT0sKcIyaHvaSMH7E9EvpGVHV+wJb2u8s1K74t4o4wdVVIq/SanzveP2TZwdtG62rs0NnFtVpR7J/1pPvU9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T20:12:25.021169Z"},"content_sha256":"9309242a09cd885e1ecc094983f96f566c1895df9d44eb31e08208340abfe61a","schema_version":"1.0","event_id":"sha256:9309242a09cd885e1ecc094983f96f566c1895df9d44eb31e08208340abfe61a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:2FPCDG6FHQIFVNNE4XKX4VU5RR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the design of random metasurface devices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Boubacar Kant\\'e, LiYi Hsu, Matthieu Dupr\\'e","submitted_at":"2018-02-04T21:59:29Z","abstract_excerpt":"Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed anisotropic elements. By analyzing the focusing performance of random metasurface lenses as a function of their density and the density of the phase-maps used to design them, we find that the performance of 1D metasurfaces is mostly governed by their density while 2D metasurfaces strongly depend on both the density and the near-field coupling configuration of the surface. The proposed approach is used to design all-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01202","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":"2026-05-18T00:24:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nEn2lAGNcfRQhKBZsiGwi8vPkfdwQL7+dO4Z01UznZoJuQ1vODWCrObIV60HT/Ss9Wl69YhBCF9h7rCMCmA1CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T20:12:25.021537Z"},"content_sha256":"31f0e69d2ad58eadaf813572bc51ca73f6ad649abcd00fd2fc9c70dba6228b8b","schema_version":"1.0","event_id":"sha256:31f0e69d2ad58eadaf813572bc51ca73f6ad649abcd00fd2fc9c70dba6228b8b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2FPCDG6FHQIFVNNE4XKX4VU5RR/bundle.json","state_url":"https://pith.science/pith/2FPCDG6FHQIFVNNE4XKX4VU5RR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2FPCDG6FHQIFVNNE4XKX4VU5RR/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":"2026-06-27T20:12:25Z","links":{"resolver":"https://pith.science/pith/2FPCDG6FHQIFVNNE4XKX4VU5RR","bundle":"https://pith.science/pith/2FPCDG6FHQIFVNNE4XKX4VU5RR/bundle.json","state":"https://pith.science/pith/2FPCDG6FHQIFVNNE4XKX4VU5RR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2FPCDG6FHQIFVNNE4XKX4VU5RR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2FPCDG6FHQIFVNNE4XKX4VU5RR","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":"5e6a43b28a298a284bf68ab3e03726a8bd49a7fa861b9ec4d194faa31e323e38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-02-04T21:59:29Z","title_canon_sha256":"2f763629e73288dd005a7dde97cf776cfbd378dca833caba7b320abad22e9a2b"},"schema_version":"1.0","source":{"id":"1802.01202","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01202","created_at":"2026-05-18T00:24:27Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01202v1","created_at":"2026-05-18T00:24:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01202","created_at":"2026-05-18T00:24:27Z"},{"alias_kind":"pith_short_12","alias_value":"2FPCDG6FHQIF","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2FPCDG6FHQIFVNNE","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2FPCDG6F","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:31f0e69d2ad58eadaf813572bc51ca73f6ad649abcd00fd2fc9c70dba6228b8b","target":"graph","created_at":"2026-05-18T00:24:27Z","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":"Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed anisotropic elements. By analyzing the focusing performance of random metasurface lenses as a function of their density and the density of the phase-maps used to design them, we find that the performance of 1D metasurfaces is mostly governed by their density while 2D metasurfaces strongly depend on both the density and the near-field coupling configuration of the surface. The proposed approach is used to design all-","authors_text":"Boubacar Kant\\'e, LiYi Hsu, Matthieu Dupr\\'e","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-02-04T21:59:29Z","title":"On the design of random metasurface devices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01202","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":"sha256:9309242a09cd885e1ecc094983f96f566c1895df9d44eb31e08208340abfe61a","target":"record","created_at":"2026-05-18T00:24:27Z","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":"5e6a43b28a298a284bf68ab3e03726a8bd49a7fa861b9ec4d194faa31e323e38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-02-04T21:59:29Z","title_canon_sha256":"2f763629e73288dd005a7dde97cf776cfbd378dca833caba7b320abad22e9a2b"},"schema_version":"1.0","source":{"id":"1802.01202","kind":"arxiv","version":1}},"canonical_sha256":"d15e219bc53c105ab5a4e5d57e569d8c43c3696a9760deb5b858b4139c1bb02b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d15e219bc53c105ab5a4e5d57e569d8c43c3696a9760deb5b858b4139c1bb02b","first_computed_at":"2026-05-18T00:24:27.072561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:27.072561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b1RQhYMZLStWtdXMjvQ1N/qeBw8vdMfFJZujOVbY2kI+KHLwFtx9S28T0oRCIRvTgH3YOmiyqEVuQzkEVmX1DA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:27.073017Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.01202","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9309242a09cd885e1ecc094983f96f566c1895df9d44eb31e08208340abfe61a","sha256:31f0e69d2ad58eadaf813572bc51ca73f6ad649abcd00fd2fc9c70dba6228b8b"],"state_sha256":"9b1e1e6165de4b6e413c2515ff3fb369bb49ed04173d8492d60676cf468b17b9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UbB6WBd311UbbeN8ZZ+dF4B91XWN4xZ5NlEJTOsuTRdD/ZzRknGdzJfcwpdKDSvw5EbVSZHwzDHmmTGgBoIiDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T20:12:25.023455Z","bundle_sha256":"c20e72fcf34586730fcc15cb3373c46c81bbf5cae4666130b0417bd9d3566713"}}