{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:CY7MLUFKCQFZVVLGRXFM7QBWLT","short_pith_number":"pith:CY7MLUFK","canonical_record":{"source":{"id":"1502.01464","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-05T08:58:04Z","cross_cats_sorted":[],"title_canon_sha256":"f371bf7f135aecf07095d5c22f6162e79e841cc63f5e0ec365f6d5daf275e5dd","abstract_canon_sha256":"1896ffc54760b1bed0b591d9cdbcbf56c73c726c7e5c4b4260163e049f92463d"},"schema_version":"1.0"},"canonical_sha256":"163ec5d0aa140b9ad5668dcacfc0365cdf08aebdcbe2e731d6b8d8f24b143697","source":{"kind":"arxiv","id":"1502.01464","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.01464","created_at":"2026-05-18T01:22:18Z"},{"alias_kind":"arxiv_version","alias_value":"1502.01464v1","created_at":"2026-05-18T01:22:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.01464","created_at":"2026-05-18T01:22:18Z"},{"alias_kind":"pith_short_12","alias_value":"CY7MLUFKCQFZ","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CY7MLUFKCQFZVVLG","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CY7MLUFK","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:CY7MLUFKCQFZVVLGRXFM7QBWLT","target":"record","payload":{"canonical_record":{"source":{"id":"1502.01464","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-05T08:58:04Z","cross_cats_sorted":[],"title_canon_sha256":"f371bf7f135aecf07095d5c22f6162e79e841cc63f5e0ec365f6d5daf275e5dd","abstract_canon_sha256":"1896ffc54760b1bed0b591d9cdbcbf56c73c726c7e5c4b4260163e049f92463d"},"schema_version":"1.0"},"canonical_sha256":"163ec5d0aa140b9ad5668dcacfc0365cdf08aebdcbe2e731d6b8d8f24b143697","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:18.909259Z","signature_b64":"NQM/6NrEcqYb2YCVpFV5uR0dmtqtCtTLJ3K3D0gbv5glTYUJRi0TPYIwIiy/khF592Ev4LLwF/zWVwcPOUh3Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"163ec5d0aa140b9ad5668dcacfc0365cdf08aebdcbe2e731d6b8d8f24b143697","last_reissued_at":"2026-05-18T01:22:18.908483Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:18.908483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.01464","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":"2026-05-18T01:22:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"INBShxDq0AFs7UD6FxEvFUjNArI9RCeUzWhmlyyHHlbilkaSHkb8aV4EjNV3UXrS7BNqDeGDH+UmA6HdKdY4Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T08:18:33.569861Z"},"content_sha256":"1a03f62ccbeedef32a719ea94e34764a2a403f816f257950223ea00bfeb7dd20","schema_version":"1.0","event_id":"sha256:1a03f62ccbeedef32a719ea94e34764a2a403f816f257950223ea00bfeb7dd20"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:CY7MLUFKCQFZVVLGRXFM7QBWLT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Wavevector Selective Metasurfaces and Tunnel Vision Filters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Jan Wallauer, Markus Walther, Mauro Perino, Nikitas Papasimakis, Nikolay I. Zheludev, Vassili. A. Fedotov","submitted_at":"2015-02-05T08:58:04Z","abstract_excerpt":"Metasurfaces offer unprecedented flexibility in the design and control of light propagation, replacing bulk optical components and exhibiting exotic optical effects. One of the basic properties of the metasurfaces, which renders them as frequency selective surfaces, is the ability to transmit or reflect radiation within a narrow spectral band that can be engineered on demand. Here we introduce and demonstrate experimentally in the THz domain the concept of wavevector selective surfaces -- metasurfaces transparent only within a narrow range of light propagation directions operating effectively "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.01464","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":"2026-05-18T01:22:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8kqt/dl9AXVjNX5+YgVRzsNXUUTD1xeKn08GI8d1fc96Jdpab6qt+WYxTyV38xV7XVQpEDqrE6n7lbNBpu5CDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T08:18:33.570200Z"},"content_sha256":"16b742fa5e3a3c77db0d015645f78c08b1e07dcee1f369d7af069fe12e4d03a5","schema_version":"1.0","event_id":"sha256:16b742fa5e3a3c77db0d015645f78c08b1e07dcee1f369d7af069fe12e4d03a5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CY7MLUFKCQFZVVLGRXFM7QBWLT/bundle.json","state_url":"https://pith.science/pith/CY7MLUFKCQFZVVLGRXFM7QBWLT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CY7MLUFKCQFZVVLGRXFM7QBWLT/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":"2026-06-28T08:18:33Z","links":{"resolver":"https://pith.science/pith/CY7MLUFKCQFZVVLGRXFM7QBWLT","bundle":"https://pith.science/pith/CY7MLUFKCQFZVVLGRXFM7QBWLT/bundle.json","state":"https://pith.science/pith/CY7MLUFKCQFZVVLGRXFM7QBWLT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CY7MLUFKCQFZVVLGRXFM7QBWLT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:CY7MLUFKCQFZVVLGRXFM7QBWLT","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":"1896ffc54760b1bed0b591d9cdbcbf56c73c726c7e5c4b4260163e049f92463d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-05T08:58:04Z","title_canon_sha256":"f371bf7f135aecf07095d5c22f6162e79e841cc63f5e0ec365f6d5daf275e5dd"},"schema_version":"1.0","source":{"id":"1502.01464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.01464","created_at":"2026-05-18T01:22:18Z"},{"alias_kind":"arxiv_version","alias_value":"1502.01464v1","created_at":"2026-05-18T01:22:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.01464","created_at":"2026-05-18T01:22:18Z"},{"alias_kind":"pith_short_12","alias_value":"CY7MLUFKCQFZ","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CY7MLUFKCQFZVVLG","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CY7MLUFK","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:16b742fa5e3a3c77db0d015645f78c08b1e07dcee1f369d7af069fe12e4d03a5","target":"graph","created_at":"2026-05-18T01:22:18Z","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 offer unprecedented flexibility in the design and control of light propagation, replacing bulk optical components and exhibiting exotic optical effects. One of the basic properties of the metasurfaces, which renders them as frequency selective surfaces, is the ability to transmit or reflect radiation within a narrow spectral band that can be engineered on demand. Here we introduce and demonstrate experimentally in the THz domain the concept of wavevector selective surfaces -- metasurfaces transparent only within a narrow range of light propagation directions operating effectively ","authors_text":"Jan Wallauer, Markus Walther, Mauro Perino, Nikitas Papasimakis, Nikolay I. Zheludev, Vassili. A. Fedotov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-05T08:58:04Z","title":"Wavevector Selective Metasurfaces and Tunnel Vision Filters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.01464","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":"sha256:1a03f62ccbeedef32a719ea94e34764a2a403f816f257950223ea00bfeb7dd20","target":"record","created_at":"2026-05-18T01:22:18Z","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":"1896ffc54760b1bed0b591d9cdbcbf56c73c726c7e5c4b4260163e049f92463d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-05T08:58:04Z","title_canon_sha256":"f371bf7f135aecf07095d5c22f6162e79e841cc63f5e0ec365f6d5daf275e5dd"},"schema_version":"1.0","source":{"id":"1502.01464","kind":"arxiv","version":1}},"canonical_sha256":"163ec5d0aa140b9ad5668dcacfc0365cdf08aebdcbe2e731d6b8d8f24b143697","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"163ec5d0aa140b9ad5668dcacfc0365cdf08aebdcbe2e731d6b8d8f24b143697","first_computed_at":"2026-05-18T01:22:18.908483Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:18.908483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NQM/6NrEcqYb2YCVpFV5uR0dmtqtCtTLJ3K3D0gbv5glTYUJRi0TPYIwIiy/khF592Ev4LLwF/zWVwcPOUh3Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:18.909259Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.01464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1a03f62ccbeedef32a719ea94e34764a2a403f816f257950223ea00bfeb7dd20","sha256:16b742fa5e3a3c77db0d015645f78c08b1e07dcee1f369d7af069fe12e4d03a5"],"state_sha256":"8a53c94b58532e5c37916d09b878353320ddd80544bbe42e70f87d4546e733d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Az8xVnOn+o3CvrTj7t5AM9W/258vCeU1UBUwxNZE9XllklTwiH3NKl9Y5j3LzNDYAfK6JeBNEAZDFuNsoeDvDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T08:18:33.572079Z","bundle_sha256":"8c527fca917629553ba0d05fc16f894e20a5a52b2c8afdc50440660950b2e058"}}