{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:TY4UKUHRYAMZZLIHEEZMRGBZZA","short_pith_number":"pith:TY4UKUHR","canonical_record":{"source":{"id":"1409.2076","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-07T02:45:18Z","cross_cats_sorted":[],"title_canon_sha256":"9901c8a93fbbac971665b23f6e429dddc5bc65bc1e876b108e934f04fd1a99eb","abstract_canon_sha256":"6f832b3a185bed387e5a2ca2fe99a7df188c19aa153895274804181d82cb2d8a"},"schema_version":"1.0"},"canonical_sha256":"9e394550f1c0199cad072132c89839c80424884a9a33977b6159afb5dfc04a60","source":{"kind":"arxiv","id":"1409.2076","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2076","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2076v1","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2076","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"pith_short_12","alias_value":"TY4UKUHRYAMZ","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"TY4UKUHRYAMZZLIH","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"TY4UKUHR","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:TY4UKUHRYAMZZLIHEEZMRGBZZA","target":"record","payload":{"canonical_record":{"source":{"id":"1409.2076","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-07T02:45:18Z","cross_cats_sorted":[],"title_canon_sha256":"9901c8a93fbbac971665b23f6e429dddc5bc65bc1e876b108e934f04fd1a99eb","abstract_canon_sha256":"6f832b3a185bed387e5a2ca2fe99a7df188c19aa153895274804181d82cb2d8a"},"schema_version":"1.0"},"canonical_sha256":"9e394550f1c0199cad072132c89839c80424884a9a33977b6159afb5dfc04a60","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:43:17.946607Z","signature_b64":"jPseWI1YI+CGUwNWOAvZFgq3+yiLAfFH7vi0XwA6ReELZ0K3RY9pEifZS7iLFHb35HyGf0DnltjQC1tx3h4bCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e394550f1c0199cad072132c89839c80424884a9a33977b6159afb5dfc04a60","last_reissued_at":"2026-05-18T02:43:17.946138Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:43:17.946138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.2076","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":"2026-05-18T02:43:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I6rdQawcbdM9qm6ee4ybFSFQyEtaZ4hXbBtok3ubTgtGWW+wGfRuUMQPFzCIpkm6xwC6LDnPdnYaEsvHhZZ+Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:44:18.064220Z"},"content_sha256":"c6c0de95285ff6e89254611312ee6aa4bf0e3ec2d07f743d7cc49f7e472314a0","schema_version":"1.0","event_id":"sha256:c6c0de95285ff6e89254611312ee6aa4bf0e3ec2d07f743d7cc49f7e472314a0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:TY4UKUHRYAMZZLIHEEZMRGBZZA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electrically Tunable Optical Absorption in a Graphene-based Salisbury Screen","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Harold Y. Hwang, Hongtao Yuan, Juhyung Kang, Kaveh M. Milaninia, Mark L. Brongersma, Vrinda Thareja, Yi Cui","submitted_at":"2014-09-07T02:45:18Z","abstract_excerpt":"We demonstrate a graphene-based Salisbury screen consisting of a single layer of graphene placed in close proximity to a gold back reflector. The light absorption in the screen can be actively tuned by electrically gating the carrier density in the graphene layer with an ionic liquid/gel. The screen was designed to achieve maximum absorption at a target wavelength of 3.2 micrometer by using a 600 nm-thick, non-absorbing silica spacer layer. Spectroscopic reflectance measurements were performed in-situ as a function of gate bias. The changes in the reflectance spectra were analyzed using a Fres"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2076","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":"2026-05-18T02:43:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IKn0qpdwUmPfwTMeQ2tu885eqz9jrg1I0+JEvRH1G9absv8/PLZ6hVyiT6U5S2k9bzlHyPN04FW3L6eJIrZBCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:44:18.064930Z"},"content_sha256":"4a4fd7f04fe30be38a8b1ce754b339eb39512e5c9e4d5a3227aaafbb7403f0b8","schema_version":"1.0","event_id":"sha256:4a4fd7f04fe30be38a8b1ce754b339eb39512e5c9e4d5a3227aaafbb7403f0b8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TY4UKUHRYAMZZLIHEEZMRGBZZA/bundle.json","state_url":"https://pith.science/pith/TY4UKUHRYAMZZLIHEEZMRGBZZA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TY4UKUHRYAMZZLIHEEZMRGBZZA/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":"2026-06-11T00:44:18Z","links":{"resolver":"https://pith.science/pith/TY4UKUHRYAMZZLIHEEZMRGBZZA","bundle":"https://pith.science/pith/TY4UKUHRYAMZZLIHEEZMRGBZZA/bundle.json","state":"https://pith.science/pith/TY4UKUHRYAMZZLIHEEZMRGBZZA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TY4UKUHRYAMZZLIHEEZMRGBZZA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:TY4UKUHRYAMZZLIHEEZMRGBZZA","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":"6f832b3a185bed387e5a2ca2fe99a7df188c19aa153895274804181d82cb2d8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-07T02:45:18Z","title_canon_sha256":"9901c8a93fbbac971665b23f6e429dddc5bc65bc1e876b108e934f04fd1a99eb"},"schema_version":"1.0","source":{"id":"1409.2076","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2076","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2076v1","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2076","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"pith_short_12","alias_value":"TY4UKUHRYAMZ","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"TY4UKUHRYAMZZLIH","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"TY4UKUHR","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:4a4fd7f04fe30be38a8b1ce754b339eb39512e5c9e4d5a3227aaafbb7403f0b8","target":"graph","created_at":"2026-05-18T02:43:17Z","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 demonstrate a graphene-based Salisbury screen consisting of a single layer of graphene placed in close proximity to a gold back reflector. The light absorption in the screen can be actively tuned by electrically gating the carrier density in the graphene layer with an ionic liquid/gel. The screen was designed to achieve maximum absorption at a target wavelength of 3.2 micrometer by using a 600 nm-thick, non-absorbing silica spacer layer. Spectroscopic reflectance measurements were performed in-situ as a function of gate bias. The changes in the reflectance spectra were analyzed using a Fres","authors_text":"Harold Y. Hwang, Hongtao Yuan, Juhyung Kang, Kaveh M. Milaninia, Mark L. Brongersma, Vrinda Thareja, Yi Cui","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-07T02:45:18Z","title":"Electrically Tunable Optical Absorption in a Graphene-based Salisbury Screen"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2076","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:c6c0de95285ff6e89254611312ee6aa4bf0e3ec2d07f743d7cc49f7e472314a0","target":"record","created_at":"2026-05-18T02:43:17Z","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":"6f832b3a185bed387e5a2ca2fe99a7df188c19aa153895274804181d82cb2d8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-07T02:45:18Z","title_canon_sha256":"9901c8a93fbbac971665b23f6e429dddc5bc65bc1e876b108e934f04fd1a99eb"},"schema_version":"1.0","source":{"id":"1409.2076","kind":"arxiv","version":1}},"canonical_sha256":"9e394550f1c0199cad072132c89839c80424884a9a33977b6159afb5dfc04a60","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e394550f1c0199cad072132c89839c80424884a9a33977b6159afb5dfc04a60","first_computed_at":"2026-05-18T02:43:17.946138Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:17.946138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jPseWI1YI+CGUwNWOAvZFgq3+yiLAfFH7vi0XwA6ReELZ0K3RY9pEifZS7iLFHb35HyGf0DnltjQC1tx3h4bCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:17.946607Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.2076","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c6c0de95285ff6e89254611312ee6aa4bf0e3ec2d07f743d7cc49f7e472314a0","sha256:4a4fd7f04fe30be38a8b1ce754b339eb39512e5c9e4d5a3227aaafbb7403f0b8"],"state_sha256":"ee6d8ec454f78a88f8375918eed542bbbcf9f8cc1956bd071d386d4ae350d8ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ajet6HlPiBPduk6zWxO1AqQ5WB4NGw0eEVCROWJGCkrdzraYMfnfS+iEkgkfDVzBN77scPuvuPgp44BQCSOZBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T00:44:18.069020Z","bundle_sha256":"c8c60d2436d803908331d03efa07e11607af14fd744cf93d0ba14f8505c00042"}}