{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:G2WBEA4FLIPM4XHJOIIRNJQVVL","short_pith_number":"pith:G2WBEA4F","canonical_record":{"source":{"id":"1503.08325","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-28T16:44:38Z","cross_cats_sorted":[],"title_canon_sha256":"9dc7bf512be9910245e23c5efce09518785cde782c62c5d52e46bc2d9bb51316","abstract_canon_sha256":"5dfe02113c2e39ba99ca6bcee4ba26f7f906fe8fc281da4eaf9521c1e63c5561"},"schema_version":"1.0"},"canonical_sha256":"36ac1203855a1ece5ce9721116a615aae357f039a917966f51a96dfa82d5eb1e","source":{"kind":"arxiv","id":"1503.08325","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.08325","created_at":"2026-05-18T01:33:58Z"},{"alias_kind":"arxiv_version","alias_value":"1503.08325v2","created_at":"2026-05-18T01:33:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.08325","created_at":"2026-05-18T01:33:58Z"},{"alias_kind":"pith_short_12","alias_value":"G2WBEA4FLIPM","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"G2WBEA4FLIPM4XHJ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"G2WBEA4F","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:G2WBEA4FLIPM4XHJOIIRNJQVVL","target":"record","payload":{"canonical_record":{"source":{"id":"1503.08325","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-28T16:44:38Z","cross_cats_sorted":[],"title_canon_sha256":"9dc7bf512be9910245e23c5efce09518785cde782c62c5d52e46bc2d9bb51316","abstract_canon_sha256":"5dfe02113c2e39ba99ca6bcee4ba26f7f906fe8fc281da4eaf9521c1e63c5561"},"schema_version":"1.0"},"canonical_sha256":"36ac1203855a1ece5ce9721116a615aae357f039a917966f51a96dfa82d5eb1e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:33:58.405786Z","signature_b64":"V9yze1VqxPSEe68PFqksTn4xvmDI59RU/whEDpcabxGeCxZhKm9vJNfah49cIYtkkKdziSel+clYejwEHen0Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"36ac1203855a1ece5ce9721116a615aae357f039a917966f51a96dfa82d5eb1e","last_reissued_at":"2026-05-18T01:33:58.405241Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:33:58.405241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.08325","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:33:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MhDOpFM6850qQm2nwtykO9jIBsX+Nqe/BQ7NVD7tI1dUlcB2XMhGcbdQ55HnanQswjXKhHpsW8QtDhUuz7yoDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:17:28.224844Z"},"content_sha256":"14f1dd6d1813db72f1b88c4dcfea3818178c47a93245326a086c9c22d5697099","schema_version":"1.0","event_id":"sha256:14f1dd6d1813db72f1b88c4dcfea3818178c47a93245326a086c9c22d5697099"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:G2WBEA4FLIPM4XHJOIIRNJQVVL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Efficiency Van Der Waals heterostructure Thermionic Device With Graphene Electrodes","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Lay Kee Ang, Shi-Jun Liang","submitted_at":"2015-03-28T16:44:38Z","abstract_excerpt":"In this paper, we propose van del Waals heterostructure-based thermionic devices for the applications in cooling and power generation in the temperature range of 300 to 400 K. By using two-dimensional materials of low cross-plane thermal conductivity as the barrier materials and graphene as electrodes, our calculation demonstrates that our proposed device will have a higher efficiency as compared to other methods such as thermoelectric device and the traditional thermionic devices. By using the parameters within the current technology, we predict a cooling capability at more than 50$\\%$ of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08325","kind":"arxiv","version":2},"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":"2026-05-18T01:33:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZtG8MJoSoBk9JaYZkjQA7HtD7ju9TY9JWoFcebCSRdb+sVOS3/JdhT6U7hNOXMFoXFr2QbSVUnpO2lJBfDM7AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:17:28.225512Z"},"content_sha256":"9955c2fc84076fbf222ff82f4ca264ca6c61ce9753abc4118a041f2604ea6ec6","schema_version":"1.0","event_id":"sha256:9955c2fc84076fbf222ff82f4ca264ca6c61ce9753abc4118a041f2604ea6ec6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G2WBEA4FLIPM4XHJOIIRNJQVVL/bundle.json","state_url":"https://pith.science/pith/G2WBEA4FLIPM4XHJOIIRNJQVVL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G2WBEA4FLIPM4XHJOIIRNJQVVL/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":"2026-05-30T07:17:28Z","links":{"resolver":"https://pith.science/pith/G2WBEA4FLIPM4XHJOIIRNJQVVL","bundle":"https://pith.science/pith/G2WBEA4FLIPM4XHJOIIRNJQVVL/bundle.json","state":"https://pith.science/pith/G2WBEA4FLIPM4XHJOIIRNJQVVL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G2WBEA4FLIPM4XHJOIIRNJQVVL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:G2WBEA4FLIPM4XHJOIIRNJQVVL","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":"5dfe02113c2e39ba99ca6bcee4ba26f7f906fe8fc281da4eaf9521c1e63c5561","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-28T16:44:38Z","title_canon_sha256":"9dc7bf512be9910245e23c5efce09518785cde782c62c5d52e46bc2d9bb51316"},"schema_version":"1.0","source":{"id":"1503.08325","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.08325","created_at":"2026-05-18T01:33:58Z"},{"alias_kind":"arxiv_version","alias_value":"1503.08325v2","created_at":"2026-05-18T01:33:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.08325","created_at":"2026-05-18T01:33:58Z"},{"alias_kind":"pith_short_12","alias_value":"G2WBEA4FLIPM","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"G2WBEA4FLIPM4XHJ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"G2WBEA4F","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:9955c2fc84076fbf222ff82f4ca264ca6c61ce9753abc4118a041f2604ea6ec6","target":"graph","created_at":"2026-05-18T01:33:58Z","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":"In this paper, we propose van del Waals heterostructure-based thermionic devices for the applications in cooling and power generation in the temperature range of 300 to 400 K. By using two-dimensional materials of low cross-plane thermal conductivity as the barrier materials and graphene as electrodes, our calculation demonstrates that our proposed device will have a higher efficiency as compared to other methods such as thermoelectric device and the traditional thermionic devices. By using the parameters within the current technology, we predict a cooling capability at more than 50$\\%$ of the","authors_text":"Lay Kee Ang, Shi-Jun Liang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-28T16:44:38Z","title":"High-Efficiency Van Der Waals heterostructure Thermionic Device With Graphene Electrodes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08325","kind":"arxiv","version":2},"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":"sha256:14f1dd6d1813db72f1b88c4dcfea3818178c47a93245326a086c9c22d5697099","target":"record","created_at":"2026-05-18T01:33:58Z","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":"5dfe02113c2e39ba99ca6bcee4ba26f7f906fe8fc281da4eaf9521c1e63c5561","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-28T16:44:38Z","title_canon_sha256":"9dc7bf512be9910245e23c5efce09518785cde782c62c5d52e46bc2d9bb51316"},"schema_version":"1.0","source":{"id":"1503.08325","kind":"arxiv","version":2}},"canonical_sha256":"36ac1203855a1ece5ce9721116a615aae357f039a917966f51a96dfa82d5eb1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"36ac1203855a1ece5ce9721116a615aae357f039a917966f51a96dfa82d5eb1e","first_computed_at":"2026-05-18T01:33:58.405241Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:33:58.405241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"V9yze1VqxPSEe68PFqksTn4xvmDI59RU/whEDpcabxGeCxZhKm9vJNfah49cIYtkkKdziSel+clYejwEHen0Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:33:58.405786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.08325","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:14f1dd6d1813db72f1b88c4dcfea3818178c47a93245326a086c9c22d5697099","sha256:9955c2fc84076fbf222ff82f4ca264ca6c61ce9753abc4118a041f2604ea6ec6"],"state_sha256":"6844b5911028985e2237d84e5ebb7712b00f21b5ecb73082a6ba8f5a75c60983"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Hfq5bV0Jx1MZnUfPUZiGwzT8saMx7FzqVpsz6K1BzPfoAO1gxmJmb461cFd9RHgtch44gUSZEUJ+trCd8DYDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T07:17:28.228890Z","bundle_sha256":"7177394f73dc1e919e740472d9ea66f7099ad955c3ce1f3ead8552c47ac3ed0c"}}