{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:H2H3OBY7GJJYLM2VHOXNFVXCPI","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":"5cad3be802a219401526b47fee2e3e7ec4c62387f89ad5ed03702c96d79d3298","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-04-02T21:08:30Z","title_canon_sha256":"f489c2e46923f587cac35b7e295089dc9319d01976766a934485697ac6f06525"},"schema_version":"1.0","source":{"id":"1004.0389","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.0389","created_at":"2026-05-18T02:08:14Z"},{"alias_kind":"arxiv_version","alias_value":"1004.0389v1","created_at":"2026-05-18T02:08:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.0389","created_at":"2026-05-18T02:08:14Z"},{"alias_kind":"pith_short_12","alias_value":"H2H3OBY7GJJY","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"H2H3OBY7GJJYLM2V","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"H2H3OBY7","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:74e7c99a56799a4f8507ccddfe996f3a86a8b06936b52ed0be0cca92cb4c5ce5","target":"graph","created_at":"2026-05-18T02:08:14Z","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":"Isotropic negative index metamaterials (NIMs) are highly desired, particularly for the realization of ultra-high resolution lenses. However, existing isotropic NIMs function only two-dimensionally and cannot be miniaturized beyond microwaves. Direct laser writing processes can be a paradigm shift toward the fabrication of three-dimensionally (3D) isotropic bulk optical metamaterials, but only at the expense of an additional design constraint, namely connectivity. Here, we demonstrate with a proof of-principle design that the requirement connectivity does not preclude fully isotropic left-hande","authors_text":"Costas M. Soukoulis, Durdu O. Guney, Thomas Koschny","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-04-02T21:08:30Z","title":"Intra-connected three-dimensionally isotropic bulk negative index photonic metamaterial"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.0389","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":"sha256:186a5ee10aa2b69a78791e80b84f4a58c325542983c988655d38e4bc57c8d983","target":"record","created_at":"2026-05-18T02:08:14Z","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":"5cad3be802a219401526b47fee2e3e7ec4c62387f89ad5ed03702c96d79d3298","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-04-02T21:08:30Z","title_canon_sha256":"f489c2e46923f587cac35b7e295089dc9319d01976766a934485697ac6f06525"},"schema_version":"1.0","source":{"id":"1004.0389","kind":"arxiv","version":1}},"canonical_sha256":"3e8fb7071f325385b3553baed2d6e27a2c264901ea892dde6c832b549a851799","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e8fb7071f325385b3553baed2d6e27a2c264901ea892dde6c832b549a851799","first_computed_at":"2026-05-18T02:08:14.712053Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:14.712053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZJOnZf0G/x3jCkaf241CjLR+5/tpb++Epb+i8xe0hSyykYTqZpItNUjXv2ZLNvFJfGx2FurSIycu88hHiEtMAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:14.712595Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.0389","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:186a5ee10aa2b69a78791e80b84f4a58c325542983c988655d38e4bc57c8d983","sha256:74e7c99a56799a4f8507ccddfe996f3a86a8b06936b52ed0be0cca92cb4c5ce5"],"state_sha256":"12f785df39339a44558b723dc7f6ad2ce9cecf2d0f9334cafab982e73730c7fa"}