{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:5QBAZYL5AIRWG4SDUXIIYBE6JL","short_pith_number":"pith:5QBAZYL5","canonical_record":{"source":{"id":"1605.05897","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-05-19T11:37:11Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"d16a857d26a51b471dab8304d19fe5f9cd64a581d467420a0258f4c3310a99ce","abstract_canon_sha256":"bac56218c6dddfb769c6e2fc8ba084ea4aa385ad490c35d96eac9ee10a50e395"},"schema_version":"1.0"},"canonical_sha256":"ec020ce17d0223637243a5d08c049e4ac2a42d06efd0f7b97de9aa72d2607e47","source":{"kind":"arxiv","id":"1605.05897","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.05897","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"1605.05897v1","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.05897","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"5QBAZYL5AIRW","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5QBAZYL5AIRWG4SD","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5QBAZYL5","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:5QBAZYL5AIRWG4SDUXIIYBE6JL","target":"record","payload":{"canonical_record":{"source":{"id":"1605.05897","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-05-19T11:37:11Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"d16a857d26a51b471dab8304d19fe5f9cd64a581d467420a0258f4c3310a99ce","abstract_canon_sha256":"bac56218c6dddfb769c6e2fc8ba084ea4aa385ad490c35d96eac9ee10a50e395"},"schema_version":"1.0"},"canonical_sha256":"ec020ce17d0223637243a5d08c049e4ac2a42d06efd0f7b97de9aa72d2607e47","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:02.307882Z","signature_b64":"OfboiFtMBmdq3iMdfcDd2hXxkTdivIfBm/JpOjq8nVRGPMkgcuKacTdRz2IP/hr3NgxTx2XsSTZXjKOjLCdSBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec020ce17d0223637243a5d08c049e4ac2a42d06efd0f7b97de9aa72d2607e47","last_reissued_at":"2026-05-18T01:12:02.307547Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:02.307547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.05897","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":"2026-05-18T01:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bCLFIgD0PfKO7E4PHHxH1tGeXJxTd5DyVOWHG5BZekKaxYzV/F68XczwvI7R1i1zVbCu8ehomraDXHvIxmuqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:34:14.119728Z"},"content_sha256":"e8bf987d64c125e6c32ac1e90f2527ded55cfdd9b7a11eed924c533b0a642466","schema_version":"1.0","event_id":"sha256:e8bf987d64c125e6c32ac1e90f2527ded55cfdd9b7a11eed924c533b0a642466"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:5QBAZYL5AIRWG4SDUXIIYBE6JL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extrinsic electromagnetic chirality in all-photodesigned one-dimensional THz metamaterials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alessandro Ciattoni, Carlo Rizza, Franco Prati, Lorenzo Columbo, Massimo Brambilla","submitted_at":"2016-05-19T11:37:11Z","abstract_excerpt":"We suggest that all-photodesigned metamaterials, sub-wavelength custom patterns of photo-excited carriers on a semiconductor, can display an exotic extrinsic electromagnetic chirality in terahertz (THz) frequency range. We consider a photo-induced pattern exhibiting 1D geometrical chirality, i.e. its mirror image can not be superposed onto itself by translations without rotations and, in the long wavelength limit, we evaluate its bianisotropic response. The photo-induced extrinsic chirality turns out to be fully reconfigurable by recasting the optical illumination which supports the photo-exci"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.05897","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":"2026-05-18T01:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s6UZ6dO3w2iPF9aiP6mt+pf5nbumf5KW6tcGlIJikFw+l6JpxBvsHzG8YxdXgTigkfxcZc5c6g/FExEH1mcDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:34:14.120386Z"},"content_sha256":"26fb007713a90ad85180f7edcf7f2e3cd689697ca48e03a103613b7bf37bf721","schema_version":"1.0","event_id":"sha256:26fb007713a90ad85180f7edcf7f2e3cd689697ca48e03a103613b7bf37bf721"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5QBAZYL5AIRWG4SDUXIIYBE6JL/bundle.json","state_url":"https://pith.science/pith/5QBAZYL5AIRWG4SDUXIIYBE6JL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5QBAZYL5AIRWG4SDUXIIYBE6JL/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":"2026-05-28T13:34:14Z","links":{"resolver":"https://pith.science/pith/5QBAZYL5AIRWG4SDUXIIYBE6JL","bundle":"https://pith.science/pith/5QBAZYL5AIRWG4SDUXIIYBE6JL/bundle.json","state":"https://pith.science/pith/5QBAZYL5AIRWG4SDUXIIYBE6JL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5QBAZYL5AIRWG4SDUXIIYBE6JL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5QBAZYL5AIRWG4SDUXIIYBE6JL","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":"bac56218c6dddfb769c6e2fc8ba084ea4aa385ad490c35d96eac9ee10a50e395","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-05-19T11:37:11Z","title_canon_sha256":"d16a857d26a51b471dab8304d19fe5f9cd64a581d467420a0258f4c3310a99ce"},"schema_version":"1.0","source":{"id":"1605.05897","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.05897","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"1605.05897v1","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.05897","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"5QBAZYL5AIRW","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5QBAZYL5AIRWG4SD","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5QBAZYL5","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:26fb007713a90ad85180f7edcf7f2e3cd689697ca48e03a103613b7bf37bf721","target":"graph","created_at":"2026-05-18T01:12:02Z","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 suggest that all-photodesigned metamaterials, sub-wavelength custom patterns of photo-excited carriers on a semiconductor, can display an exotic extrinsic electromagnetic chirality in terahertz (THz) frequency range. We consider a photo-induced pattern exhibiting 1D geometrical chirality, i.e. its mirror image can not be superposed onto itself by translations without rotations and, in the long wavelength limit, we evaluate its bianisotropic response. The photo-induced extrinsic chirality turns out to be fully reconfigurable by recasting the optical illumination which supports the photo-exci","authors_text":"Alessandro Ciattoni, Carlo Rizza, Franco Prati, Lorenzo Columbo, Massimo Brambilla","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-05-19T11:37:11Z","title":"Extrinsic electromagnetic chirality in all-photodesigned one-dimensional THz metamaterials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.05897","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:e8bf987d64c125e6c32ac1e90f2527ded55cfdd9b7a11eed924c533b0a642466","target":"record","created_at":"2026-05-18T01:12:02Z","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":"bac56218c6dddfb769c6e2fc8ba084ea4aa385ad490c35d96eac9ee10a50e395","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-05-19T11:37:11Z","title_canon_sha256":"d16a857d26a51b471dab8304d19fe5f9cd64a581d467420a0258f4c3310a99ce"},"schema_version":"1.0","source":{"id":"1605.05897","kind":"arxiv","version":1}},"canonical_sha256":"ec020ce17d0223637243a5d08c049e4ac2a42d06efd0f7b97de9aa72d2607e47","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec020ce17d0223637243a5d08c049e4ac2a42d06efd0f7b97de9aa72d2607e47","first_computed_at":"2026-05-18T01:12:02.307547Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:02.307547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OfboiFtMBmdq3iMdfcDd2hXxkTdivIfBm/JpOjq8nVRGPMkgcuKacTdRz2IP/hr3NgxTx2XsSTZXjKOjLCdSBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:02.307882Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.05897","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8bf987d64c125e6c32ac1e90f2527ded55cfdd9b7a11eed924c533b0a642466","sha256:26fb007713a90ad85180f7edcf7f2e3cd689697ca48e03a103613b7bf37bf721"],"state_sha256":"d2681a0d2aed4aa4d61f151cec4960180a28738e475af2dbda8bd9d45d53db4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2haNnEg/MO1PlQilsny4BSWLHgzANyO0kahsCbj+tLthlzMNuv23YtmyvhpUxmcuNsenvFOmCuYGJL2V3yfuCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T13:34:14.123407Z","bundle_sha256":"1e88013959f8567155a75d4f4908268a4d99a418fdacea66aa236dfd4dfb8abd"}}