{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:BXGMS4ODPJEQ3D5AMC2U7EOJVY","short_pith_number":"pith:BXGMS4OD","schema_version":"1.0","canonical_sha256":"0dccc971c37a490d8fa060b54f91c9ae22e360098ef8f92971dfe546087924f8","source":{"kind":"arxiv","id":"1111.6697","version":2},"attestation_state":"computed","paper":{"title":"Atomic-resolution spectroscopic imaging of ensembles of nanocatalyst particles across the life of a fuel cell","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"David A. Muller, Frederick T. Wagner, Huolin L. Xin (1), Julia A. Mundy (1), Junliang Zhang, Lena Fitting Kourkoutis, Nalini P. Subramanian, Randi Cabezas, Robert Hovden, Rohit Makharia, Zhongyi Liu","submitted_at":"2011-11-29T05:26:34Z","abstract_excerpt":"The thousandfold increase in data-collection speed enabled by aberration-corrected optics allows us to overcome an electron microscopy paradox - how to obtain atomic-resolution chemical structure in individual nanoparticles, yet record a statistically significant sample from an inhomogeneous population. This allowed us to map hundreds of Pt-Co nanoparticles to show atomic-scale elemental distributions across different stages of the catalyst aging in a proton-exchange-membrane fuel cell, and relate Pt-shell thickness to treatment, particle size, surface orientation, and ordering."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1111.6697","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-11-29T05:26:34Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"37e5ada08f66efccf333c165bdac28afe4878a0f6314e60b290a7510a981f3f0","abstract_canon_sha256":"6fc478674c8f77306607acd6c6375af6b8ef84bced6d400e187bda7b032d9875"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:11.501692Z","signature_b64":"xiLbS8QjSCPinNS6BEN/esZFtKfEXctC70VcYHFVky5rXkZBgabpKc8So94XC+xUKlPMmWveUPT7BaiocjgbCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0dccc971c37a490d8fa060b54f91c9ae22e360098ef8f92971dfe546087924f8","last_reissued_at":"2026-05-18T02:25:11.501091Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:11.501091Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Atomic-resolution spectroscopic imaging of ensembles of nanocatalyst particles across the life of a fuel cell","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"David A. Muller, Frederick T. Wagner, Huolin L. Xin (1), Julia A. Mundy (1), Junliang Zhang, Lena Fitting Kourkoutis, Nalini P. Subramanian, Randi Cabezas, Robert Hovden, Rohit Makharia, Zhongyi Liu","submitted_at":"2011-11-29T05:26:34Z","abstract_excerpt":"The thousandfold increase in data-collection speed enabled by aberration-corrected optics allows us to overcome an electron microscopy paradox - how to obtain atomic-resolution chemical structure in individual nanoparticles, yet record a statistically significant sample from an inhomogeneous population. This allowed us to map hundreds of Pt-Co nanoparticles to show atomic-scale elemental distributions across different stages of the catalyst aging in a proton-exchange-membrane fuel cell, and relate Pt-shell thickness to treatment, particle size, surface orientation, and ordering."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.6697","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1111.6697","created_at":"2026-05-18T02:25:11.501178+00:00"},{"alias_kind":"arxiv_version","alias_value":"1111.6697v2","created_at":"2026-05-18T02:25:11.501178+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.6697","created_at":"2026-05-18T02:25:11.501178+00:00"},{"alias_kind":"pith_short_12","alias_value":"BXGMS4ODPJEQ","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_16","alias_value":"BXGMS4ODPJEQ3D5A","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_8","alias_value":"BXGMS4OD","created_at":"2026-05-18T12:26:24.575870+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY","json":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY.json","graph_json":"https://pith.science/api/pith-number/BXGMS4ODPJEQ3D5AMC2U7EOJVY/graph.json","events_json":"https://pith.science/api/pith-number/BXGMS4ODPJEQ3D5AMC2U7EOJVY/events.json","paper":"https://pith.science/paper/BXGMS4OD"},"agent_actions":{"view_html":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY","download_json":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY.json","view_paper":"https://pith.science/paper/BXGMS4OD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1111.6697&json=true","fetch_graph":"https://pith.science/api/pith-number/BXGMS4ODPJEQ3D5AMC2U7EOJVY/graph.json","fetch_events":"https://pith.science/api/pith-number/BXGMS4ODPJEQ3D5AMC2U7EOJVY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY/action/storage_attestation","attest_author":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY/action/author_attestation","sign_citation":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY/action/citation_signature","submit_replication":"https://pith.science/pith/BXGMS4ODPJEQ3D5AMC2U7EOJVY/action/replication_record"}},"created_at":"2026-05-18T02:25:11.501178+00:00","updated_at":"2026-05-18T02:25:11.501178+00:00"}