{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GIVAPFZVXQWIKE3TKPA3JCXU4O","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":"97d4f783cd8f8d50732e97e7c1f03a50cb9c0b0898485f7ef03c8de06f9eb39d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci","physics.chem-ph","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2020-03-02T16:51:55Z","title_canon_sha256":"64eeae0621735f845513d2ae14c382c3748dbf3b4c4b4050b5f32488019a8c1f"},"schema_version":"1.0","source":{"id":"2003.11897","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.11897","created_at":"2026-07-05T02:04:55Z"},{"alias_kind":"arxiv_version","alias_value":"2003.11897v2","created_at":"2026-07-05T02:04:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.11897","created_at":"2026-07-05T02:04:55Z"},{"alias_kind":"pith_short_12","alias_value":"GIVAPFZVXQWI","created_at":"2026-07-05T02:04:55Z"},{"alias_kind":"pith_short_16","alias_value":"GIVAPFZVXQWIKE3T","created_at":"2026-07-05T02:04:55Z"},{"alias_kind":"pith_short_8","alias_value":"GIVAPFZV","created_at":"2026-07-05T02:04:55Z"}],"graph_snapshots":[{"event_id":"sha256:edfca0b39bae2b991d53f081dc102aa26cefa1cdc2c9e3cb98df82e049f5c5b7","target":"graph","created_at":"2026-07-05T02:04:55Z","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/2003.11897/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Luminescent colloidal CdSe nanorings are a new type of semiconductor structure that have attracted interest due to the potential for unique physics arising from their non-trivial toroidal shape. However, the exciton properties and dynamics of these materials with complex topology are not yet well understood. Here, we use a combination of femtosecond vibrational spectroscopy, temperature-resolved photoluminescence (PL), and single particle measurements to study these materials. We find that on transformation of CdSe nanoplatelets to nanorings, by perforating the center of platelets, the emissio","authors_text":"Akshay Rao, Edoardo Ruggeri, James Xiao, Jeffrey Mc Hugh, Laurent Legrand, Malgorzata Nguyen, Mustafa \\c{C}a\\u{g}lar, Neil C. Greenham, Nicolas Gauriot, Raj Pandya, Richard H. Friend, Samuel D. Stranks, Thierry Barisien, Tomi Baikie, Violette Steinmetz, Yun Liu, Zahra Andaji-Garmaroudi","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci","physics.chem-ph","quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2020-03-02T16:51:55Z","title":"Optical and electronic properties of colloidal CdSe Quantum Rings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.11897","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":"sha256:02acd2b242d2538ed7a6de0096b4ea3e79db2534d61f19922d609256451fd77a","target":"record","created_at":"2026-07-05T02:04:55Z","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":"97d4f783cd8f8d50732e97e7c1f03a50cb9c0b0898485f7ef03c8de06f9eb39d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci","physics.chem-ph","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2020-03-02T16:51:55Z","title_canon_sha256":"64eeae0621735f845513d2ae14c382c3748dbf3b4c4b4050b5f32488019a8c1f"},"schema_version":"1.0","source":{"id":"2003.11897","kind":"arxiv","version":2}},"canonical_sha256":"322a079735bc2c85137353c1b48af4e3943ed00f12259937c747b2eb518f9753","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"322a079735bc2c85137353c1b48af4e3943ed00f12259937c747b2eb518f9753","first_computed_at":"2026-07-05T02:04:55.723590Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:04:55.723590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qIXaXM5JNZa0dkrfmbTCMLFrm05TfYEP5cjW5EDLJwkA3gEyXdGDCZ5/eMIcY6rILPr05ZZFtluUYz9xyTFYDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:04:55.724129Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.11897","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:02acd2b242d2538ed7a6de0096b4ea3e79db2534d61f19922d609256451fd77a","sha256:edfca0b39bae2b991d53f081dc102aa26cefa1cdc2c9e3cb98df82e049f5c5b7"],"state_sha256":"a20478fc18e54ee374e18651a2c03a66c406f480d3f2f22337ca0198b5d57a82"}