{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DHSA7B35666WR5VDDBRTFCZFWA","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":"63257b20bb07270ecd110ae573818c07a5d12bfda5ab51be30e6b53c0c4e7259","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-06-05T12:03:00Z","title_canon_sha256":"606effa213666a1f212df9eedd6178f2d7a36f94def74b6263157033416bff3f"},"schema_version":"1.0","source":{"id":"1606.01499","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.01499","created_at":"2026-05-18T01:02:12Z"},{"alias_kind":"arxiv_version","alias_value":"1606.01499v2","created_at":"2026-05-18T01:02:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.01499","created_at":"2026-05-18T01:02:12Z"},{"alias_kind":"pith_short_12","alias_value":"DHSA7B35666W","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DHSA7B35666WR5VD","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DHSA7B35","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:332dcaf202a9e2e1a317104c77611af816138176c0d584d73fc8acbb59baf00d","target":"graph","created_at":"2026-05-18T01:02:12Z","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":"We design plano-concave silicon lenses with coupled gradient-index plasmonic metacoatings for ultrawide apertured focusing utilizing a reduced region of $\\sim 20 \\lambda^2$. The anomalous refraction induced in the planar input side of the lens and in the boundary of the wavelength-scale focal region boosts the curvature of the emerging wavefront, thus significantly enhancing the resolution of the tightly-focused optical wave. The formation of a light tongue with dimensions approaching those of the concave opening is here evidenced. This scheme is expected to have potential applications in opti","authors_text":"Carlos D\\'iaz-Avi\\~n\\'o, Carlos J. Zapata-Rodr\\'iguez, Mahdieh Hashemi, Mahin Naserpour","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-06-05T12:03:00Z","title":"Metacoatings for wavelength scale, high NA plano-concave focusing lenses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.01499","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:c097e1edeee29c4a916d29d9ee4a1c1ce51569269ab1cbfc4b0863326cfd7f9b","target":"record","created_at":"2026-05-18T01:02:12Z","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":"63257b20bb07270ecd110ae573818c07a5d12bfda5ab51be30e6b53c0c4e7259","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-06-05T12:03:00Z","title_canon_sha256":"606effa213666a1f212df9eedd6178f2d7a36f94def74b6263157033416bff3f"},"schema_version":"1.0","source":{"id":"1606.01499","kind":"arxiv","version":2}},"canonical_sha256":"19e40f877df7bd68f6a31863328b25b00f08c1ef225062670760bd23cc7d7e1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19e40f877df7bd68f6a31863328b25b00f08c1ef225062670760bd23cc7d7e1e","first_computed_at":"2026-05-18T01:02:12.691778Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:12.691778Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BxBGsZiPdsDt7kzbeNtkawrnoOL8C9Mjhd5Pukym9Tz+YCBhtQXYEYs4QyYwGk7iJLfi68ZEutQ0zkOkSO4/CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:12.692324Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.01499","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c097e1edeee29c4a916d29d9ee4a1c1ce51569269ab1cbfc4b0863326cfd7f9b","sha256:332dcaf202a9e2e1a317104c77611af816138176c0d584d73fc8acbb59baf00d"],"state_sha256":"8b1c7ed8f4d67ab28eca0436349717729ee8011607243a1a2240357accb1adb3"}