{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:7HF55KNZXCHLYDKOL5VTGNE5FG","short_pith_number":"pith:7HF55KNZ","canonical_record":{"source":{"id":"2408.01295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-02T14:35:06Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"af616eafca534b9db1a3c702bda5bfa0edac19aa34917bec4a17798823f7421f","abstract_canon_sha256":"a36cce348bbad554e0c2c1297080ad5940914e6e5d073da66ae3af3d66f0380c"},"schema_version":"1.0"},"canonical_sha256":"f9cbdea9b9b88ebc0d4e5f6b33349d298951e319226917c203471ca40cd3156b","source":{"kind":"arxiv","id":"2408.01295","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.01295","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"arxiv_version","alias_value":"2408.01295v1","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.01295","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"pith_short_12","alias_value":"7HF55KNZXCHL","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"pith_short_16","alias_value":"7HF55KNZXCHLYDKO","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"pith_short_8","alias_value":"7HF55KNZ","created_at":"2026-07-05T08:51:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:7HF55KNZXCHLYDKOL5VTGNE5FG","target":"record","payload":{"canonical_record":{"source":{"id":"2408.01295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-02T14:35:06Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"af616eafca534b9db1a3c702bda5bfa0edac19aa34917bec4a17798823f7421f","abstract_canon_sha256":"a36cce348bbad554e0c2c1297080ad5940914e6e5d073da66ae3af3d66f0380c"},"schema_version":"1.0"},"canonical_sha256":"f9cbdea9b9b88ebc0d4e5f6b33349d298951e319226917c203471ca40cd3156b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:51:29.723297Z","signature_b64":"JEkXMzUtozPFTQAqBJwMsjFiUQA14BI8twsEcNIqAH5tDG9bWqE1NcMgw61+HRA0yV9iyMTQzK99IzvFv5x1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f9cbdea9b9b88ebc0d4e5f6b33349d298951e319226917c203471ca40cd3156b","last_reissued_at":"2026-07-05T08:51:29.722762Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:51:29.722762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2408.01295","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":"2026-07-05T08:51:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ePdb/0+Djiakk/EUNSxNuUmMxT3C+fTBQE2UZvgTSNENG7r6cesgrckwFibxvCUICIPYw125qvWSsV5XntjPDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T17:56:43.446872Z"},"content_sha256":"5b569957bd3028762bd29f6f6fd59dbcf93def6ec551b64fea5195b3d9f82ae0","schema_version":"1.0","event_id":"sha256:5b569957bd3028762bd29f6f6fd59dbcf93def6ec551b64fea5195b3d9f82ae0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:7HF55KNZXCHLYDKOL5VTGNE5FG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Large Area Near-Field Thermophotovoltaics for Low Temperature Applications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Eric J. Tervo, Jennifer Selvidge, John Goldsmith, Myles A. Steiner, Parth Solanki, Ryan M. France","submitted_at":"2024-08-02T14:35:06Z","abstract_excerpt":"Thermophotovoltaics, devices that convert thermal infrared photons to electricity, offer a key pathway for a variety of critical renewable energy technologies including thermal energy storage, waste heat recovery, and direct solar-thermal power generation. However, conventional far-field devices struggle to generate reasonable powers at lower temperatures. Near-field thermophotovoltaics provide a pathway to substantially higher powers by leveraging photon tunneling effects. Here we present a large area near-field thermophotovoltaic device, created with an epitaxial co-fabrication approach, tha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.01295","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2408.01295/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T08:51:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rHq07JJl9jkU9XNQFxEYhstBweoNmBxMOxvXR6xChRDNhBFq+pE33+Hboy4s8QVNrZd/FbuU3S36LNcJpO4VDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T17:56:43.447427Z"},"content_sha256":"53dc55c5f8396ca54d52631b542eb87e10e9e676a678002fc4edf4c059c00cbb","schema_version":"1.0","event_id":"sha256:53dc55c5f8396ca54d52631b542eb87e10e9e676a678002fc4edf4c059c00cbb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7HF55KNZXCHLYDKOL5VTGNE5FG/bundle.json","state_url":"https://pith.science/pith/7HF55KNZXCHLYDKOL5VTGNE5FG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7HF55KNZXCHLYDKOL5VTGNE5FG/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":"2026-08-23T17:56:43Z","links":{"resolver":"https://pith.science/pith/7HF55KNZXCHLYDKOL5VTGNE5FG","bundle":"https://pith.science/pith/7HF55KNZXCHLYDKOL5VTGNE5FG/bundle.json","state":"https://pith.science/pith/7HF55KNZXCHLYDKOL5VTGNE5FG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7HF55KNZXCHLYDKOL5VTGNE5FG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:7HF55KNZXCHLYDKOL5VTGNE5FG","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":"a36cce348bbad554e0c2c1297080ad5940914e6e5d073da66ae3af3d66f0380c","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-02T14:35:06Z","title_canon_sha256":"af616eafca534b9db1a3c702bda5bfa0edac19aa34917bec4a17798823f7421f"},"schema_version":"1.0","source":{"id":"2408.01295","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.01295","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"arxiv_version","alias_value":"2408.01295v1","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.01295","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"pith_short_12","alias_value":"7HF55KNZXCHL","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"pith_short_16","alias_value":"7HF55KNZXCHLYDKO","created_at":"2026-07-05T08:51:29Z"},{"alias_kind":"pith_short_8","alias_value":"7HF55KNZ","created_at":"2026-07-05T08:51:29Z"}],"graph_snapshots":[{"event_id":"sha256:53dc55c5f8396ca54d52631b542eb87e10e9e676a678002fc4edf4c059c00cbb","target":"graph","created_at":"2026-07-05T08:51:29Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2408.01295/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Thermophotovoltaics, devices that convert thermal infrared photons to electricity, offer a key pathway for a variety of critical renewable energy technologies including thermal energy storage, waste heat recovery, and direct solar-thermal power generation. However, conventional far-field devices struggle to generate reasonable powers at lower temperatures. Near-field thermophotovoltaics provide a pathway to substantially higher powers by leveraging photon tunneling effects. Here we present a large area near-field thermophotovoltaic device, created with an epitaxial co-fabrication approach, tha","authors_text":"Eric J. Tervo, Jennifer Selvidge, John Goldsmith, Myles A. Steiner, Parth Solanki, Ryan M. France","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-02T14:35:06Z","title":"Large Area Near-Field Thermophotovoltaics for Low Temperature Applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.01295","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":"sha256:5b569957bd3028762bd29f6f6fd59dbcf93def6ec551b64fea5195b3d9f82ae0","target":"record","created_at":"2026-07-05T08:51:29Z","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":"a36cce348bbad554e0c2c1297080ad5940914e6e5d073da66ae3af3d66f0380c","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-02T14:35:06Z","title_canon_sha256":"af616eafca534b9db1a3c702bda5bfa0edac19aa34917bec4a17798823f7421f"},"schema_version":"1.0","source":{"id":"2408.01295","kind":"arxiv","version":1}},"canonical_sha256":"f9cbdea9b9b88ebc0d4e5f6b33349d298951e319226917c203471ca40cd3156b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f9cbdea9b9b88ebc0d4e5f6b33349d298951e319226917c203471ca40cd3156b","first_computed_at":"2026-07-05T08:51:29.722762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:51:29.722762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JEkXMzUtozPFTQAqBJwMsjFiUQA14BI8twsEcNIqAH5tDG9bWqE1NcMgw61+HRA0yV9iyMTQzK99IzvFv5x1AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:51:29.723297Z","signed_message":"canonical_sha256_bytes"},"source_id":"2408.01295","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b569957bd3028762bd29f6f6fd59dbcf93def6ec551b64fea5195b3d9f82ae0","sha256:53dc55c5f8396ca54d52631b542eb87e10e9e676a678002fc4edf4c059c00cbb"],"state_sha256":"7945c80f78a4f926fff37d3e89a40ec1cecad4dd383a0f3f88deaaf88b8b75c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oV6tk+xNSNfYNq9FktgGZjZDh+wq2ZjOm/0xzY3SflSqJh/vZ3gf1dvIXWOFrD4u/cY5bgtVIWea4IV6/+S7DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T17:56:43.453931Z","bundle_sha256":"d617c21e80adf4e5dd3172b67d71942c229f7195fe47820747da92cc6263aabe"}}