{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:VJ23HLWPOXSMCYV7YFLUOL7KY5","short_pith_number":"pith:VJ23HLWP","canonical_record":{"source":{"id":"1503.06246","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-20T22:58:34Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"5f4711890fe964f2329134a088d8026c353f861b051009ed486d5e09d995b10f","abstract_canon_sha256":"e3369a9ce04a68b737578ce8ad33ea3acb6a3ed3c4e79ccda006fa842ba06c1d"},"schema_version":"1.0"},"canonical_sha256":"aa75b3aecf75e4c162bfc157472feac760928459c3d1d9703c086adca03d445a","source":{"kind":"arxiv","id":"1503.06246","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06246","created_at":"2026-05-18T01:35:54Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06246v1","created_at":"2026-05-18T01:35:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06246","created_at":"2026-05-18T01:35:54Z"},{"alias_kind":"pith_short_12","alias_value":"VJ23HLWPOXSM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VJ23HLWPOXSMCYV7","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VJ23HLWP","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:VJ23HLWPOXSMCYV7YFLUOL7KY5","target":"record","payload":{"canonical_record":{"source":{"id":"1503.06246","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-20T22:58:34Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"5f4711890fe964f2329134a088d8026c353f861b051009ed486d5e09d995b10f","abstract_canon_sha256":"e3369a9ce04a68b737578ce8ad33ea3acb6a3ed3c4e79ccda006fa842ba06c1d"},"schema_version":"1.0"},"canonical_sha256":"aa75b3aecf75e4c162bfc157472feac760928459c3d1d9703c086adca03d445a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:54.788407Z","signature_b64":"SSHrh/xRv/toZ3TnA4YNVJt68jGdR9wFa1DQIU0ucZbFEENF5UtugFo9+2SDikLoAebiaBl3h4B6gHwexY0zDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa75b3aecf75e4c162bfc157472feac760928459c3d1d9703c086adca03d445a","last_reissued_at":"2026-05-18T01:35:54.787850Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:54.787850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.06246","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":"2026-05-18T01:35:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ryg7TmWyHGLHgTdRf5acbWcpN52OcSw4qS7UPrCGrEQn1HDGcxPrr0rcmY0di7oByzEfC0GzPAFQanqmbtxOBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:04:57.408661Z"},"content_sha256":"c69e6a1dd9b11706fcd3deb18ff39dd1084cfd18297c6aa2dbc7280a5b5c9b62","schema_version":"1.0","event_id":"sha256:c69e6a1dd9b11706fcd3deb18ff39dd1084cfd18297c6aa2dbc7280a5b5c9b62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:VJ23HLWPOXSMCYV7YFLUOL7KY5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Realizing high-quality, ultra-large momentum states using semiconductor hyperbolic metamaterials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"physics.optics","authors_text":"Michael B. Sinclair, Salvatore Campione, Sheng Liu, Ting S. Luk","submitted_at":"2015-03-20T22:58:34Z","abstract_excerpt":"We employ both the effective medium approximation (EMA) and Bloch theory to compare the dispersion properties of semiconductor hyperbolic metamaterials (SHMs) at mid-infrared frequencies and metallic hyperbolic metamaterials (MHMs) at visible frequencies. This analysis reveals the conditions under which the EMA can be safely applied for both MHMs and SHMs. We find that the combination of precise nanoscale layering and the longer infrared operating wavelengths puts the SHMs well within the effective medium limit and, in contrast to MHMs, allows the attainment of very high photon momentum states"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06246","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":"2026-05-18T01:35:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N6kxSFQyEv4pe6wV8T9JtFTP5A+3gNOeTLc2F5bk4mf2Qw8q8apllyebtfeJx6TDhZuUpS/18t911LHzXRmqAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:04:57.409215Z"},"content_sha256":"c6d981b5075e37ad2815db9527ecec3ac8634f2ab1395138a1d0204cee9d6d6b","schema_version":"1.0","event_id":"sha256:c6d981b5075e37ad2815db9527ecec3ac8634f2ab1395138a1d0204cee9d6d6b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VJ23HLWPOXSMCYV7YFLUOL7KY5/bundle.json","state_url":"https://pith.science/pith/VJ23HLWPOXSMCYV7YFLUOL7KY5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VJ23HLWPOXSMCYV7YFLUOL7KY5/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":"2026-05-28T10:04:57Z","links":{"resolver":"https://pith.science/pith/VJ23HLWPOXSMCYV7YFLUOL7KY5","bundle":"https://pith.science/pith/VJ23HLWPOXSMCYV7YFLUOL7KY5/bundle.json","state":"https://pith.science/pith/VJ23HLWPOXSMCYV7YFLUOL7KY5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VJ23HLWPOXSMCYV7YFLUOL7KY5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:VJ23HLWPOXSMCYV7YFLUOL7KY5","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":"e3369a9ce04a68b737578ce8ad33ea3acb6a3ed3c4e79ccda006fa842ba06c1d","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-20T22:58:34Z","title_canon_sha256":"5f4711890fe964f2329134a088d8026c353f861b051009ed486d5e09d995b10f"},"schema_version":"1.0","source":{"id":"1503.06246","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06246","created_at":"2026-05-18T01:35:54Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06246v1","created_at":"2026-05-18T01:35:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06246","created_at":"2026-05-18T01:35:54Z"},{"alias_kind":"pith_short_12","alias_value":"VJ23HLWPOXSM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VJ23HLWPOXSMCYV7","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VJ23HLWP","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:c6d981b5075e37ad2815db9527ecec3ac8634f2ab1395138a1d0204cee9d6d6b","target":"graph","created_at":"2026-05-18T01:35:54Z","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 employ both the effective medium approximation (EMA) and Bloch theory to compare the dispersion properties of semiconductor hyperbolic metamaterials (SHMs) at mid-infrared frequencies and metallic hyperbolic metamaterials (MHMs) at visible frequencies. This analysis reveals the conditions under which the EMA can be safely applied for both MHMs and SHMs. We find that the combination of precise nanoscale layering and the longer infrared operating wavelengths puts the SHMs well within the effective medium limit and, in contrast to MHMs, allows the attainment of very high photon momentum states","authors_text":"Michael B. Sinclair, Salvatore Campione, Sheng Liu, Ting S. Luk","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-20T22:58:34Z","title":"Realizing high-quality, ultra-large momentum states using semiconductor hyperbolic metamaterials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06246","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:c69e6a1dd9b11706fcd3deb18ff39dd1084cfd18297c6aa2dbc7280a5b5c9b62","target":"record","created_at":"2026-05-18T01:35:54Z","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":"e3369a9ce04a68b737578ce8ad33ea3acb6a3ed3c4e79ccda006fa842ba06c1d","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-20T22:58:34Z","title_canon_sha256":"5f4711890fe964f2329134a088d8026c353f861b051009ed486d5e09d995b10f"},"schema_version":"1.0","source":{"id":"1503.06246","kind":"arxiv","version":1}},"canonical_sha256":"aa75b3aecf75e4c162bfc157472feac760928459c3d1d9703c086adca03d445a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa75b3aecf75e4c162bfc157472feac760928459c3d1d9703c086adca03d445a","first_computed_at":"2026-05-18T01:35:54.787850Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:54.787850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SSHrh/xRv/toZ3TnA4YNVJt68jGdR9wFa1DQIU0ucZbFEENF5UtugFo9+2SDikLoAebiaBl3h4B6gHwexY0zDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:54.788407Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.06246","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c69e6a1dd9b11706fcd3deb18ff39dd1084cfd18297c6aa2dbc7280a5b5c9b62","sha256:c6d981b5075e37ad2815db9527ecec3ac8634f2ab1395138a1d0204cee9d6d6b"],"state_sha256":"78aa6977a5bb0fd23c4e0ce6be7e6e2070311b59c3e44ecff3d3e5da03c6d15d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9YZ40DwDJyXKeXGNiobfi3wxlfP3Z+TJ3IZZ1LZ3XtwPO0B3jYNAOkqFgspOvy5Bm5VA0DLGxP4c4cD995W4Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T10:04:57.411404Z","bundle_sha256":"bd987203dd272093388f84942da9d8a1ad009d1f1011cb9363d8e07ba25bb0b7"}}