{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:TU6AU6XB6Z64D7L57FEYQDT5PD","short_pith_number":"pith:TU6AU6XB","canonical_record":{"source":{"id":"1311.0394","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-11-02T17:19:42Z","cross_cats_sorted":[],"title_canon_sha256":"3359cec31c798b1046748ce9d037b83172f5b5d055ae615ada21594b07e2a7a5","abstract_canon_sha256":"344ce49f189e6bae9351a02793f9481d6a9dcb8a70f6a9ea8232a81270b7f40b"},"schema_version":"1.0"},"canonical_sha256":"9d3c0a7ae1f67dc1fd7df949880e7d78f8515f99f809ef143212ba087cdc75a6","source":{"kind":"arxiv","id":"1311.0394","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.0394","created_at":"2026-05-18T03:08:06Z"},{"alias_kind":"arxiv_version","alias_value":"1311.0394v1","created_at":"2026-05-18T03:08:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.0394","created_at":"2026-05-18T03:08:06Z"},{"alias_kind":"pith_short_12","alias_value":"TU6AU6XB6Z64","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TU6AU6XB6Z64D7L5","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TU6AU6XB","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:TU6AU6XB6Z64D7L57FEYQDT5PD","target":"record","payload":{"canonical_record":{"source":{"id":"1311.0394","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-11-02T17:19:42Z","cross_cats_sorted":[],"title_canon_sha256":"3359cec31c798b1046748ce9d037b83172f5b5d055ae615ada21594b07e2a7a5","abstract_canon_sha256":"344ce49f189e6bae9351a02793f9481d6a9dcb8a70f6a9ea8232a81270b7f40b"},"schema_version":"1.0"},"canonical_sha256":"9d3c0a7ae1f67dc1fd7df949880e7d78f8515f99f809ef143212ba087cdc75a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:08:06.083073Z","signature_b64":"w9kdvMQfB6Qd7lSLDB8lwg8G3jIIACaWv+Uag6Ok3nigaefRm7+7xlQezruaz8TvO82uWCNEVnKeHxfGi1jcCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d3c0a7ae1f67dc1fd7df949880e7d78f8515f99f809ef143212ba087cdc75a6","last_reissued_at":"2026-05-18T03:08:06.082367Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:08:06.082367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.0394","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":"2026-05-18T03:08:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i6QTSOIrPef4a8jwtE6K1tQHWyF/2iuF4Ss+rgxaV5xhOnhS7mOh2EzsGubO4KbLU3zkbE6p2obD8AJusML5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:23:59.262270Z"},"content_sha256":"2853679056cb5235444dba06f3f2e2371af148dda8ee56e936dfecbac71f6667","schema_version":"1.0","event_id":"sha256:2853679056cb5235444dba06f3f2e2371af148dda8ee56e936dfecbac71f6667"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:TU6AU6XB6Z64D7L57FEYQDT5PD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Computer-Generated Holographic Gratings in Soft Matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Antigone Marino, Bruno Piccirillo, Enrico Santamato, Giancarlo Abbate, Gianluigi Zito, Volodymyr Tkachenko","submitted_at":"2013-11-02T17:19:42Z","abstract_excerpt":"Standard multiple-beam holography has been largely used to produce gratings in polymer-liquid crystal composites, like POLICRYPS, H-PDLC gratings and POLIPHEM [1]. In this work we present a different approach to liquid crystalpolymeric grating production, based on the Computer-Generated Holography (CGH). The great advantage of using CGH is that interferometer-based schemes are no longer necessary, avoiding problems related to long term stability of the interference pattern and multi-beam complex optical setup. Moreover, the CGH technique allows a wider choice of pattern designs. In this prelim"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.0394","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":"2026-05-18T03:08:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PprcUPvPQ4pPOzanRxq9K3AsFVd0sKdsBu4eo+WvmZhZf91nv8+n2LSlfYe69Xa3C0ovXMnLQetqmrktbVR1DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:23:59.262897Z"},"content_sha256":"23139872ff81dc5e2b787ca0f446d450acea06d55ea4cdf03004234a04c879bd","schema_version":"1.0","event_id":"sha256:23139872ff81dc5e2b787ca0f446d450acea06d55ea4cdf03004234a04c879bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TU6AU6XB6Z64D7L57FEYQDT5PD/bundle.json","state_url":"https://pith.science/pith/TU6AU6XB6Z64D7L57FEYQDT5PD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TU6AU6XB6Z64D7L57FEYQDT5PD/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":"2026-05-27T19:23:59Z","links":{"resolver":"https://pith.science/pith/TU6AU6XB6Z64D7L57FEYQDT5PD","bundle":"https://pith.science/pith/TU6AU6XB6Z64D7L57FEYQDT5PD/bundle.json","state":"https://pith.science/pith/TU6AU6XB6Z64D7L57FEYQDT5PD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TU6AU6XB6Z64D7L57FEYQDT5PD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TU6AU6XB6Z64D7L57FEYQDT5PD","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":"344ce49f189e6bae9351a02793f9481d6a9dcb8a70f6a9ea8232a81270b7f40b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-11-02T17:19:42Z","title_canon_sha256":"3359cec31c798b1046748ce9d037b83172f5b5d055ae615ada21594b07e2a7a5"},"schema_version":"1.0","source":{"id":"1311.0394","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.0394","created_at":"2026-05-18T03:08:06Z"},{"alias_kind":"arxiv_version","alias_value":"1311.0394v1","created_at":"2026-05-18T03:08:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.0394","created_at":"2026-05-18T03:08:06Z"},{"alias_kind":"pith_short_12","alias_value":"TU6AU6XB6Z64","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TU6AU6XB6Z64D7L5","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TU6AU6XB","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:23139872ff81dc5e2b787ca0f446d450acea06d55ea4cdf03004234a04c879bd","target":"graph","created_at":"2026-05-18T03:08:06Z","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":"Standard multiple-beam holography has been largely used to produce gratings in polymer-liquid crystal composites, like POLICRYPS, H-PDLC gratings and POLIPHEM [1]. In this work we present a different approach to liquid crystalpolymeric grating production, based on the Computer-Generated Holography (CGH). The great advantage of using CGH is that interferometer-based schemes are no longer necessary, avoiding problems related to long term stability of the interference pattern and multi-beam complex optical setup. Moreover, the CGH technique allows a wider choice of pattern designs. In this prelim","authors_text":"Antigone Marino, Bruno Piccirillo, Enrico Santamato, Giancarlo Abbate, Gianluigi Zito, Volodymyr Tkachenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-11-02T17:19:42Z","title":"Computer-Generated Holographic Gratings in Soft Matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.0394","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":"sha256:2853679056cb5235444dba06f3f2e2371af148dda8ee56e936dfecbac71f6667","target":"record","created_at":"2026-05-18T03:08:06Z","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":"344ce49f189e6bae9351a02793f9481d6a9dcb8a70f6a9ea8232a81270b7f40b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-11-02T17:19:42Z","title_canon_sha256":"3359cec31c798b1046748ce9d037b83172f5b5d055ae615ada21594b07e2a7a5"},"schema_version":"1.0","source":{"id":"1311.0394","kind":"arxiv","version":1}},"canonical_sha256":"9d3c0a7ae1f67dc1fd7df949880e7d78f8515f99f809ef143212ba087cdc75a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d3c0a7ae1f67dc1fd7df949880e7d78f8515f99f809ef143212ba087cdc75a6","first_computed_at":"2026-05-18T03:08:06.082367Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:08:06.082367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w9kdvMQfB6Qd7lSLDB8lwg8G3jIIACaWv+Uag6Ok3nigaefRm7+7xlQezruaz8TvO82uWCNEVnKeHxfGi1jcCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:08:06.083073Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.0394","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2853679056cb5235444dba06f3f2e2371af148dda8ee56e936dfecbac71f6667","sha256:23139872ff81dc5e2b787ca0f446d450acea06d55ea4cdf03004234a04c879bd"],"state_sha256":"085d9b216f92a064892e4aec9498ee4f9c5d531e10b2521a26a2697ed1c85e9e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M7wf2C5swTqIY0X6Gx+L0W15pn7LWlFnePAoEAImIcz3aAtQKC1pG0OWZCUl4QhnerLxG0KHo1IariFotO/tCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:23:59.265974Z","bundle_sha256":"b2187a15a01e23e10ffd95bde1a1e5731144f28dc07a608b51605e05a4d71e0a"}}