{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:DH5COXMEPGUNITHFGXGBNW4J5B","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":"68afa67902756e646ea88d2cce9af786b80e3846ff386115f6c6fdfcb6fbecfe","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-08-10T11:12:46Z","title_canon_sha256":"d878965f7451e26ebf6ea6a1c2611dd471b76431e155b046dffa2ab6c6307983"},"schema_version":"1.0","source":{"id":"2208.05275","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.05275","created_at":"2026-07-05T06:22:59Z"},{"alias_kind":"arxiv_version","alias_value":"2208.05275v2","created_at":"2026-07-05T06:22:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.05275","created_at":"2026-07-05T06:22:59Z"},{"alias_kind":"pith_short_12","alias_value":"DH5COXMEPGUN","created_at":"2026-07-05T06:22:59Z"},{"alias_kind":"pith_short_16","alias_value":"DH5COXMEPGUNITHF","created_at":"2026-07-05T06:22:59Z"},{"alias_kind":"pith_short_8","alias_value":"DH5COXME","created_at":"2026-07-05T06:22:59Z"}],"graph_snapshots":[{"event_id":"sha256:1371276ee082e6b03480cf244317491526c77ac79a6a8d5daa3c35a8d68176f9","target":"graph","created_at":"2026-07-05T06:22:59Z","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/2208.05275/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate the back-end integration of broadband, high-NA GaN micro-lenses by micro-assembly onto non-native semiconductor substrates. We developed a highly parallel micro-fabrication process flow to suspend micron scale plano-convex lens platelets from 6\" Si growth wafers and show their subsequent transfer-printing integration. A growth process targeted at producing unbowed epitaxial wafers was combined with optimisation of the etching volume in order to produce flat devices for printing. Lens structures were fabricated with 6 to 11 $\\mu$m diameter, 2 $\\mu$m height and root-mean-squared s","authors_text":"Benoit Guilhabert, Martin D. Dawson, Menno Kappers, Michael J. Strain, Miles Toon, Nils Kolja Wessling, Rachel A. Oliver, Saptarsi Ghosh","cross_cats":["cond-mat.mes-hall","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-08-10T11:12:46Z","title":"Fabrication and transfer print based integration of free-standing GaN membrane micro-lenses onto semiconductor chips"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.05275","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:bfdda932b18a27255d3333fd40e1d463d7d086ca0c9655ddab3e8a2d8fc2b5d9","target":"record","created_at":"2026-07-05T06:22:59Z","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":"68afa67902756e646ea88d2cce9af786b80e3846ff386115f6c6fdfcb6fbecfe","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2022-08-10T11:12:46Z","title_canon_sha256":"d878965f7451e26ebf6ea6a1c2611dd471b76431e155b046dffa2ab6c6307983"},"schema_version":"1.0","source":{"id":"2208.05275","kind":"arxiv","version":2}},"canonical_sha256":"19fa275d8479a8d44ce535cc16db89e85895adeb010c49e175947a68151e4133","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19fa275d8479a8d44ce535cc16db89e85895adeb010c49e175947a68151e4133","first_computed_at":"2026-07-05T06:22:59.035031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:22:59.035031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gLm0Of/FsYu1yYGjoRZv4J7a2r23847HV84l5rVbLDa2RxVdbHIP17UrL2Vck+L19ytptOYcSqBqVhzEGqe3Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T06:22:59.035459Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.05275","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bfdda932b18a27255d3333fd40e1d463d7d086ca0c9655ddab3e8a2d8fc2b5d9","sha256:1371276ee082e6b03480cf244317491526c77ac79a6a8d5daa3c35a8d68176f9"],"state_sha256":"122db7b0322c67b3f3d032a34aeae457fd3514411d89c0d2aeea93f9b0ce808b"}