{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:EFJRPIOIMKBDNTEEBDF7FLTAGF","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":"dddf20202386ebb0e2fd77369d8a5058bea893aaa6d7eb561c81f51d6d4ccfb6","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2020-10-27T15:51:21Z","title_canon_sha256":"aed3fd33a52d0ee44111d66fad27c042d4b3d6286a22dc826e0d51678f72d961"},"schema_version":"1.0","source":{"id":"2011.01866","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.01866","created_at":"2026-07-05T01:48:36Z"},{"alias_kind":"arxiv_version","alias_value":"2011.01866v1","created_at":"2026-07-05T01:48:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.01866","created_at":"2026-07-05T01:48:36Z"},{"alias_kind":"pith_short_12","alias_value":"EFJRPIOIMKBD","created_at":"2026-07-05T01:48:36Z"},{"alias_kind":"pith_short_16","alias_value":"EFJRPIOIMKBDNTEE","created_at":"2026-07-05T01:48:36Z"},{"alias_kind":"pith_short_8","alias_value":"EFJRPIOI","created_at":"2026-07-05T01:48:36Z"}],"graph_snapshots":[{"event_id":"sha256:3d4bbbee2ffd3555ecf1d1ce507ea3b91e0973c93688fd0e95216fb0173892d9","target":"graph","created_at":"2026-07-05T01:48:36Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2011.01866/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have investigated the formation of laser-induced periodic surface structures (LIPSS or ripples) on silicon upon excitation with p-polarized excimer laser pulses in the deep ultraviolet region (wavelength = 193 nm, pulse duration = 20 ns). Well-pronounced ripples with a period close to the laser wavelength were observed for pulse numbers N = 100 or higher, and the ripple period increased with the angle of incidence. While these results seem to be qualitatively consistent with the standard Sipe-theory, we observed a fundamentally different ripple formation mechanism and ripple morphology. At ","authors_text":"Jan Siegel, Javier Solis, Jos\\'e A. Sanchez-Gil, Raul Zazo, Rocio Ariza, Rosalia Serna","cross_cats":["cond-mat.mtrl-sci","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2020-10-27T15:51:21Z","title":"Deep UV laser induced periodic surface structures on silicon formed by self-organization of nanoparticles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.01866","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":"sha256:655c58e94a52409d5508f3a4977e17b3adc2a02278439dfbc0191c1e008b77b4","target":"record","created_at":"2026-07-05T01:48:36Z","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":"dddf20202386ebb0e2fd77369d8a5058bea893aaa6d7eb561c81f51d6d4ccfb6","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2020-10-27T15:51:21Z","title_canon_sha256":"aed3fd33a52d0ee44111d66fad27c042d4b3d6286a22dc826e0d51678f72d961"},"schema_version":"1.0","source":{"id":"2011.01866","kind":"arxiv","version":1}},"canonical_sha256":"215317a1c8628236cc8408cbf2ae603178dc137475ea160d957479f30d6af47b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"215317a1c8628236cc8408cbf2ae603178dc137475ea160d957479f30d6af47b","first_computed_at":"2026-07-05T01:48:36.705530Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:48:36.705530Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BCkWvgRDrZOQcmMTNMnJ20bOOmBTNtyi1BPcVYvsHlkcVNCVDUTbgal0lcjoIJnisGJtLvetKMYe688q4SiqAg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:48:36.705886Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.01866","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:655c58e94a52409d5508f3a4977e17b3adc2a02278439dfbc0191c1e008b77b4","sha256:3d4bbbee2ffd3555ecf1d1ce507ea3b91e0973c93688fd0e95216fb0173892d9"],"state_sha256":"8bffbd326bcc9ac237f34f0d629a69c85823da4141da8ebe34598258fabe74ba"}