{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:7LOPJC2BK4ROODEINPZPBN6C2D","short_pith_number":"pith:7LOPJC2B","schema_version":"1.0","canonical_sha256":"fadcf48b415722e70c886bf2f0b7c2d0ec0d6702e21aa58f29f4d6d442f85a01","source":{"kind":"arxiv","id":"1709.05019","version":1},"attestation_state":"computed","paper":{"title":"Freeform metagratings based on complex light scattering dynamics for extreme, high efficiency beam steering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"David Sell, Jianji Yang, Jonathan A. Fan","submitted_at":"2017-09-15T00:50:10Z","abstract_excerpt":"Conventional phased-array metasurfaces utilize resonant nanoparticles or nanowaveguides to specify spatially-dependent amplitude and phase responses to light. In nearly all these implementations, subwavelength-scale elements are stitched together while minimizing coupling between adjacent elements. In this report, we theoretically analyze an alternate method of metasurface design, utilizing freeform inverse design methods, which support significantly enhanced efficiencies compared to conventional designs. Our design process optimizes wavelength-scale elements, which dramatically increases the "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1709.05019","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-09-15T00:50:10Z","cross_cats_sorted":[],"title_canon_sha256":"01682ea81a80bd02f6dcd36242f6c42b20d159a5509c5d644013b3b9dc387376","abstract_canon_sha256":"dc66f06159216fafdb25728e4659da659cda94083003100cc8c33ed580b8d48c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:54.818775Z","signature_b64":"cbD0KgABAY+XM5nThE7OdRreMOqKnN4AHqHbMxhbmMEGhm+CPKb9uuQ/BlrEXUEvZG53TQonsKUjZYl0KeT9Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fadcf48b415722e70c886bf2f0b7c2d0ec0d6702e21aa58f29f4d6d442f85a01","last_reissued_at":"2026-05-18T00:32:54.818095Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:54.818095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Freeform metagratings based on complex light scattering dynamics for extreme, high efficiency beam steering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"David Sell, Jianji Yang, Jonathan A. Fan","submitted_at":"2017-09-15T00:50:10Z","abstract_excerpt":"Conventional phased-array metasurfaces utilize resonant nanoparticles or nanowaveguides to specify spatially-dependent amplitude and phase responses to light. In nearly all these implementations, subwavelength-scale elements are stitched together while minimizing coupling between adjacent elements. In this report, we theoretically analyze an alternate method of metasurface design, utilizing freeform inverse design methods, which support significantly enhanced efficiencies compared to conventional designs. Our design process optimizes wavelength-scale elements, which dramatically increases the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05019","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1709.05019","created_at":"2026-05-18T00:32:54.818192+00:00"},{"alias_kind":"arxiv_version","alias_value":"1709.05019v1","created_at":"2026-05-18T00:32:54.818192+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05019","created_at":"2026-05-18T00:32:54.818192+00:00"},{"alias_kind":"pith_short_12","alias_value":"7LOPJC2BK4RO","created_at":"2026-05-18T12:31:05.417338+00:00"},{"alias_kind":"pith_short_16","alias_value":"7LOPJC2BK4ROODEI","created_at":"2026-05-18T12:31:05.417338+00:00"},{"alias_kind":"pith_short_8","alias_value":"7LOPJC2B","created_at":"2026-05-18T12:31:05.417338+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D","json":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D.json","graph_json":"https://pith.science/api/pith-number/7LOPJC2BK4ROODEINPZPBN6C2D/graph.json","events_json":"https://pith.science/api/pith-number/7LOPJC2BK4ROODEINPZPBN6C2D/events.json","paper":"https://pith.science/paper/7LOPJC2B"},"agent_actions":{"view_html":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D","download_json":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D.json","view_paper":"https://pith.science/paper/7LOPJC2B","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1709.05019&json=true","fetch_graph":"https://pith.science/api/pith-number/7LOPJC2BK4ROODEINPZPBN6C2D/graph.json","fetch_events":"https://pith.science/api/pith-number/7LOPJC2BK4ROODEINPZPBN6C2D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D/action/storage_attestation","attest_author":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D/action/author_attestation","sign_citation":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D/action/citation_signature","submit_replication":"https://pith.science/pith/7LOPJC2BK4ROODEINPZPBN6C2D/action/replication_record"}},"created_at":"2026-05-18T00:32:54.818192+00:00","updated_at":"2026-05-18T00:32:54.818192+00:00"}