{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:H4NH6P2VDZIJRP35KPL7BEPGGL","short_pith_number":"pith:H4NH6P2V","canonical_record":{"source":{"id":"1106.4290","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-21T19:02:53Z","cross_cats_sorted":[],"title_canon_sha256":"046cc4ec40290283f904fcede5a63d80922a4c8077a40e409570f59b6b6395fc","abstract_canon_sha256":"e8076d39ae7a072ed0d6953e4cc3bec3745493c0874e07e468e985fdd9bd6101"},"schema_version":"1.0"},"canonical_sha256":"3f1a7f3f551e5098bf7d53d7f091e632d2554e52d367835bc47c66a5f1d48a1f","source":{"kind":"arxiv","id":"1106.4290","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4290","created_at":"2026-05-18T04:19:33Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4290v1","created_at":"2026-05-18T04:19:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4290","created_at":"2026-05-18T04:19:33Z"},{"alias_kind":"pith_short_12","alias_value":"H4NH6P2VDZIJ","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"H4NH6P2VDZIJRP35","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"H4NH6P2V","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:H4NH6P2VDZIJRP35KPL7BEPGGL","target":"record","payload":{"canonical_record":{"source":{"id":"1106.4290","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-21T19:02:53Z","cross_cats_sorted":[],"title_canon_sha256":"046cc4ec40290283f904fcede5a63d80922a4c8077a40e409570f59b6b6395fc","abstract_canon_sha256":"e8076d39ae7a072ed0d6953e4cc3bec3745493c0874e07e468e985fdd9bd6101"},"schema_version":"1.0"},"canonical_sha256":"3f1a7f3f551e5098bf7d53d7f091e632d2554e52d367835bc47c66a5f1d48a1f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:19:33.756525Z","signature_b64":"9iwdjB4BnF+Q8LX9Xq+mgxgYtWcHmSXTXn3xrS+h6AZlGmL05eGX/X6+yddg8bWkpdcUMbIsYFA9uLvYGchPBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f1a7f3f551e5098bf7d53d7f091e632d2554e52d367835bc47c66a5f1d48a1f","last_reissued_at":"2026-05-18T04:19:33.755994Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:19:33.755994Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.4290","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":"2026-05-18T04:19:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jrXZtY5Equm5Wag/z6m+5kaOWeBH8c4F34iZjzXwKZ/Jn/fpgA7Ir3exe0SYDvuvtoZqM5GUYoERf3c1cQfHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T01:27:20.081684Z"},"content_sha256":"0690b06ac1a54d64eac0277743e7837b63c63433202b3dce2e53a9663eb99f8f","schema_version":"1.0","event_id":"sha256:0690b06ac1a54d64eac0277743e7837b63c63433202b3dce2e53a9663eb99f8f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:H4NH6P2VDZIJRP35KPL7BEPGGL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Wafer-scale selective area growth of GaN hexagonal prismatic nanostructures on c-sapphire substrate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Brigitte Martin, Christophe Durand (NPSC, Daniel Le Si Dang (NEEL), Guillaume Perillat-Merceroz (LEMMA), Jo\\\"el Eymery (NPSC), Jun-Seo Hwang (NEEL), Stefan Landis, UJF), Xiao Jun Chen (NPSC)","submitted_at":"2011-06-21T19:02:53Z","abstract_excerpt":"Selective area growth of GaN nanostructures has been performed on full 2\" c-sapphire substrates using Si3N4 mask patterned by nanoimprint lithography (array of 400 nm diameter circular holes). A new process has been developed to improve the homogeneity of the nucleation selectivity of c-oriented hexagonal prismatic nanostructures at high temperature (1040\\circ C). It consists of an initial GaN nucleation step at 950 \\circ C followed by ammonia annealing before high temperature growth. Structural analyses show that GaN nanostructures are grown in epitaxy with c-sapphire with lateral overgrowths"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4290","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":"2026-05-18T04:19:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hob6FQkn84VFojOQlOjXIexcQx01CRWtlkbD2tDcEBg4yQlcMQfhMjAkVRYabdgRHvjT+hFsMutH6s2QnfYyBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T01:27:20.082374Z"},"content_sha256":"912f58b4812f2acba04f32fb137a0abbbf26dfd9175d31952a3da919d786c7cf","schema_version":"1.0","event_id":"sha256:912f58b4812f2acba04f32fb137a0abbbf26dfd9175d31952a3da919d786c7cf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H4NH6P2VDZIJRP35KPL7BEPGGL/bundle.json","state_url":"https://pith.science/pith/H4NH6P2VDZIJRP35KPL7BEPGGL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H4NH6P2VDZIJRP35KPL7BEPGGL/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":"2026-06-12T01:27:20Z","links":{"resolver":"https://pith.science/pith/H4NH6P2VDZIJRP35KPL7BEPGGL","bundle":"https://pith.science/pith/H4NH6P2VDZIJRP35KPL7BEPGGL/bundle.json","state":"https://pith.science/pith/H4NH6P2VDZIJRP35KPL7BEPGGL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H4NH6P2VDZIJRP35KPL7BEPGGL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:H4NH6P2VDZIJRP35KPL7BEPGGL","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":"e8076d39ae7a072ed0d6953e4cc3bec3745493c0874e07e468e985fdd9bd6101","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-21T19:02:53Z","title_canon_sha256":"046cc4ec40290283f904fcede5a63d80922a4c8077a40e409570f59b6b6395fc"},"schema_version":"1.0","source":{"id":"1106.4290","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4290","created_at":"2026-05-18T04:19:33Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4290v1","created_at":"2026-05-18T04:19:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4290","created_at":"2026-05-18T04:19:33Z"},{"alias_kind":"pith_short_12","alias_value":"H4NH6P2VDZIJ","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"H4NH6P2VDZIJRP35","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"H4NH6P2V","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:912f58b4812f2acba04f32fb137a0abbbf26dfd9175d31952a3da919d786c7cf","target":"graph","created_at":"2026-05-18T04:19:33Z","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":"Selective area growth of GaN nanostructures has been performed on full 2\" c-sapphire substrates using Si3N4 mask patterned by nanoimprint lithography (array of 400 nm diameter circular holes). A new process has been developed to improve the homogeneity of the nucleation selectivity of c-oriented hexagonal prismatic nanostructures at high temperature (1040\\circ C). It consists of an initial GaN nucleation step at 950 \\circ C followed by ammonia annealing before high temperature growth. Structural analyses show that GaN nanostructures are grown in epitaxy with c-sapphire with lateral overgrowths","authors_text":"Brigitte Martin, Christophe Durand (NPSC, Daniel Le Si Dang (NEEL), Guillaume Perillat-Merceroz (LEMMA), Jo\\\"el Eymery (NPSC), Jun-Seo Hwang (NEEL), Stefan Landis, UJF), Xiao Jun Chen (NPSC)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-21T19:02:53Z","title":"Wafer-scale selective area growth of GaN hexagonal prismatic nanostructures on c-sapphire substrate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4290","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":"sha256:0690b06ac1a54d64eac0277743e7837b63c63433202b3dce2e53a9663eb99f8f","target":"record","created_at":"2026-05-18T04:19:33Z","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":"e8076d39ae7a072ed0d6953e4cc3bec3745493c0874e07e468e985fdd9bd6101","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-06-21T19:02:53Z","title_canon_sha256":"046cc4ec40290283f904fcede5a63d80922a4c8077a40e409570f59b6b6395fc"},"schema_version":"1.0","source":{"id":"1106.4290","kind":"arxiv","version":1}},"canonical_sha256":"3f1a7f3f551e5098bf7d53d7f091e632d2554e52d367835bc47c66a5f1d48a1f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f1a7f3f551e5098bf7d53d7f091e632d2554e52d367835bc47c66a5f1d48a1f","first_computed_at":"2026-05-18T04:19:33.755994Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:19:33.755994Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9iwdjB4BnF+Q8LX9Xq+mgxgYtWcHmSXTXn3xrS+h6AZlGmL05eGX/X6+yddg8bWkpdcUMbIsYFA9uLvYGchPBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:19:33.756525Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.4290","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0690b06ac1a54d64eac0277743e7837b63c63433202b3dce2e53a9663eb99f8f","sha256:912f58b4812f2acba04f32fb137a0abbbf26dfd9175d31952a3da919d786c7cf"],"state_sha256":"a2c99d01c920b156957a2e04244c969762191d00cb5e35828e8f25de22789fc6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jjgzzvadpBq+wxsOOXJ7JCgQ2L2sJ8reJ5Q1kK+WMs6cM5t/M64Tir9khbMQJAk3wCf40xAdO3jlSyG7MOeSCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T01:27:20.087133Z","bundle_sha256":"1ab5c7abec60323fa722316c806145764ef69df3116e0a42e5f141afd11956d5"}}