{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:OVOLJNE7ZPTXUQBT4FPF65BTLZ","short_pith_number":"pith:OVOLJNE7","canonical_record":{"source":{"id":"1809.08412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-09-22T08:51:49Z","cross_cats_sorted":[],"title_canon_sha256":"bc9faaaf7f9e6dd5d7dcd540fb3ffd786f6ef85f548cc43bcce27cb5d7c23d55","abstract_canon_sha256":"14569324084d43b1ba56f0797c5d618c379496d35c715943a8147d9f273f7ffe"},"schema_version":"1.0"},"canonical_sha256":"755cb4b49fcbe77a4033e15e5f74335e7b691eb20c3f518f01d8211aef957dd4","source":{"kind":"arxiv","id":"1809.08412","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.08412","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"arxiv_version","alias_value":"1809.08412v1","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.08412","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"pith_short_12","alias_value":"OVOLJNE7ZPTX","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OVOLJNE7ZPTXUQBT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OVOLJNE7","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:OVOLJNE7ZPTXUQBT4FPF65BTLZ","target":"record","payload":{"canonical_record":{"source":{"id":"1809.08412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-09-22T08:51:49Z","cross_cats_sorted":[],"title_canon_sha256":"bc9faaaf7f9e6dd5d7dcd540fb3ffd786f6ef85f548cc43bcce27cb5d7c23d55","abstract_canon_sha256":"14569324084d43b1ba56f0797c5d618c379496d35c715943a8147d9f273f7ffe"},"schema_version":"1.0"},"canonical_sha256":"755cb4b49fcbe77a4033e15e5f74335e7b691eb20c3f518f01d8211aef957dd4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:36.568951Z","signature_b64":"nfe5sFiL0qUivoZRz/JjgxITPF2WpNXnd0ffXq37jk16kyhz5VBjR4yvRz5fPiCT9ymJDE9DGSdHFPgMCDwdDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"755cb4b49fcbe77a4033e15e5f74335e7b691eb20c3f518f01d8211aef957dd4","last_reissued_at":"2026-05-17T23:45:36.568178Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:36.568178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.08412","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":"2026-05-17T23:45:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4hsOVecFzGaov0zTg+iezNtRCPd0L1vWkqsq48gaHo+VHqMv399o+6ZLS5NzF8sYLwck5/ie+qLRaIehCFchBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:07:44.475753Z"},"content_sha256":"67d861c42036e2c39b3ee699087e7213f7db6bcb818db937717b0c451b95b0d9","schema_version":"1.0","event_id":"sha256:67d861c42036e2c39b3ee699087e7213f7db6bcb818db937717b0c451b95b0d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:OVOLJNE7ZPTXUQBT4FPF65BTLZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cu2O porous nanostructured films fabricated by positive bias sputtering deposition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jiangbin Su, Ji Ma, Lei Zhou, Meiping Jiang, Xianfang Zhu, Yang Liu, Yiqi Zhu","submitted_at":"2018-09-22T08:51:49Z","abstract_excerpt":"In this work, the authors fabricated Cu2O porous nanostructured films (PNFs) on glass slide substrates by the newly developed positive bias deposition approach in a balanced magnetron sputtering (MS) system. It was found that the surface morphology, crystal structure and optical property of the as-deposited products were greatly dependent on the applied positive substrate bias. In particular, when the substrate was biased at +50 V and +150 V, both of the as-prepared Cu2O PNFs exhibited a unique triangular pyramids-like structure with obvious edges and corners and little gluing, a preferred ori"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08412","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":"2026-05-17T23:45:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"snITbeqnuDXHD5pKXH1JARl7V0Pt4tOzfa7QXrvJTFPsE7gGUktHhyR7K40eCTBvJVHwowl/dAWNOgEgYwufDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:07:44.476343Z"},"content_sha256":"49c62a3d234e1e750214b17faa933d60affb8d36c459ccb627f065db522cb652","schema_version":"1.0","event_id":"sha256:49c62a3d234e1e750214b17faa933d60affb8d36c459ccb627f065db522cb652"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OVOLJNE7ZPTXUQBT4FPF65BTLZ/bundle.json","state_url":"https://pith.science/pith/OVOLJNE7ZPTXUQBT4FPF65BTLZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OVOLJNE7ZPTXUQBT4FPF65BTLZ/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":"2026-05-30T06:07:44Z","links":{"resolver":"https://pith.science/pith/OVOLJNE7ZPTXUQBT4FPF65BTLZ","bundle":"https://pith.science/pith/OVOLJNE7ZPTXUQBT4FPF65BTLZ/bundle.json","state":"https://pith.science/pith/OVOLJNE7ZPTXUQBT4FPF65BTLZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OVOLJNE7ZPTXUQBT4FPF65BTLZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OVOLJNE7ZPTXUQBT4FPF65BTLZ","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":"14569324084d43b1ba56f0797c5d618c379496d35c715943a8147d9f273f7ffe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-09-22T08:51:49Z","title_canon_sha256":"bc9faaaf7f9e6dd5d7dcd540fb3ffd786f6ef85f548cc43bcce27cb5d7c23d55"},"schema_version":"1.0","source":{"id":"1809.08412","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.08412","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"arxiv_version","alias_value":"1809.08412v1","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.08412","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"pith_short_12","alias_value":"OVOLJNE7ZPTX","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OVOLJNE7ZPTXUQBT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OVOLJNE7","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:49c62a3d234e1e750214b17faa933d60affb8d36c459ccb627f065db522cb652","target":"graph","created_at":"2026-05-17T23:45:36Z","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 work, the authors fabricated Cu2O porous nanostructured films (PNFs) on glass slide substrates by the newly developed positive bias deposition approach in a balanced magnetron sputtering (MS) system. It was found that the surface morphology, crystal structure and optical property of the as-deposited products were greatly dependent on the applied positive substrate bias. In particular, when the substrate was biased at +50 V and +150 V, both of the as-prepared Cu2O PNFs exhibited a unique triangular pyramids-like structure with obvious edges and corners and little gluing, a preferred ori","authors_text":"Jiangbin Su, Ji Ma, Lei Zhou, Meiping Jiang, Xianfang Zhu, Yang Liu, Yiqi Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-09-22T08:51:49Z","title":"Cu2O porous nanostructured films fabricated by positive bias sputtering deposition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08412","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":"sha256:67d861c42036e2c39b3ee699087e7213f7db6bcb818db937717b0c451b95b0d9","target":"record","created_at":"2026-05-17T23:45:36Z","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":"14569324084d43b1ba56f0797c5d618c379496d35c715943a8147d9f273f7ffe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-09-22T08:51:49Z","title_canon_sha256":"bc9faaaf7f9e6dd5d7dcd540fb3ffd786f6ef85f548cc43bcce27cb5d7c23d55"},"schema_version":"1.0","source":{"id":"1809.08412","kind":"arxiv","version":1}},"canonical_sha256":"755cb4b49fcbe77a4033e15e5f74335e7b691eb20c3f518f01d8211aef957dd4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"755cb4b49fcbe77a4033e15e5f74335e7b691eb20c3f518f01d8211aef957dd4","first_computed_at":"2026-05-17T23:45:36.568178Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:36.568178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nfe5sFiL0qUivoZRz/JjgxITPF2WpNXnd0ffXq37jk16kyhz5VBjR4yvRz5fPiCT9ymJDE9DGSdHFPgMCDwdDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:36.568951Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.08412","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67d861c42036e2c39b3ee699087e7213f7db6bcb818db937717b0c451b95b0d9","sha256:49c62a3d234e1e750214b17faa933d60affb8d36c459ccb627f065db522cb652"],"state_sha256":"f8fcc37bb8e2fa10597eec18c27789db8cb2adcb00ca65de1ac7f38f4682387c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wcnDPPVsmdWQXUJkocpVxa69oCx1Hfjbvez1nnETKuxo1iIjf8DHdYKR18aVe9m9bwx4qcDmV45NxkTykiknCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:07:44.478776Z","bundle_sha256":"7efacf91010984484c4cc75ac13247bd1c3514b18be55e1f050fd18c2385ae11"}}