{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NXB4BYQ45M6ZY5YQ4R726EGA6Z","short_pith_number":"pith:NXB4BYQ4","canonical_record":{"source":{"id":"1901.05120","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-16T02:58:59Z","cross_cats_sorted":[],"title_canon_sha256":"179bab9a10a8767c7e13728b8c3a1f2bbe24209eb653147f8eddfc37fb00eee4","abstract_canon_sha256":"2ff7edae7f00816cebf10b2362d4ee7279367b7a1fae6f9d395a2194eab30275"},"schema_version":"1.0"},"canonical_sha256":"6dc3c0e21ceb3d9c7710e47faf10c0f6734c4d5d2697a8c7eb294d1a2afe9e27","source":{"kind":"arxiv","id":"1901.05120","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.05120","created_at":"2026-05-17T23:50:48Z"},{"alias_kind":"arxiv_version","alias_value":"1901.05120v2","created_at":"2026-05-17T23:50:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.05120","created_at":"2026-05-17T23:50:48Z"},{"alias_kind":"pith_short_12","alias_value":"NXB4BYQ45M6Z","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NXB4BYQ45M6ZY5YQ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NXB4BYQ4","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NXB4BYQ45M6ZY5YQ4R726EGA6Z","target":"record","payload":{"canonical_record":{"source":{"id":"1901.05120","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-16T02:58:59Z","cross_cats_sorted":[],"title_canon_sha256":"179bab9a10a8767c7e13728b8c3a1f2bbe24209eb653147f8eddfc37fb00eee4","abstract_canon_sha256":"2ff7edae7f00816cebf10b2362d4ee7279367b7a1fae6f9d395a2194eab30275"},"schema_version":"1.0"},"canonical_sha256":"6dc3c0e21ceb3d9c7710e47faf10c0f6734c4d5d2697a8c7eb294d1a2afe9e27","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:48.602724Z","signature_b64":"ZRYsKJgJefb38uLoUKjKeZJ3KlLMmFKupyVrYKGz9X+GmLHJGB1EUVcPO4eDVdAe8L4riJ6Y3QVuMgbrYdOEAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6dc3c0e21ceb3d9c7710e47faf10c0f6734c4d5d2697a8c7eb294d1a2afe9e27","last_reissued_at":"2026-05-17T23:50:48.602209Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:48.602209Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.05120","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:50:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hQUX1KlglY7szZI1yLWUvLcNwo4kQwj3X1DeoXftkRcu3svV9yIbFM2kxXg+SEL73Y/c/8sjkFsRysbnNhXuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T12:54:01.303306Z"},"content_sha256":"dc7623ca53872015eb17789c7355fd4bd1706a4e817755daf5e02390add546db","schema_version":"1.0","event_id":"sha256:dc7623ca53872015eb17789c7355fd4bd1706a4e817755daf5e02390add546db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NXB4BYQ45M6ZY5YQ4R726EGA6Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Element Replacement Approach by Reaction with Lewis Acidic Molten Salts to Synthesize Nanolaminated MAX Phases and MXenes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jie Zhou, Johanna Rosen, Jun Lu, Kan Luo, Ke Chen, Keke Chang, Lars Hultman, Mian Li, Per Eklund, Per O.{\\AA}. Persson, Qing Huang, Shiyu Du, Youbing Li, Zhengren Huang, Zhifang Chai","submitted_at":"2019-01-16T02:58:59Z","abstract_excerpt":"Nanolaminated materials are important because of their exceptional properties and wide range of applications. Here, we demonstrate a general approach to synthesize a series of Zn-based MAX phases and Cl-terminated MXenes originating from the replacement reaction between the MAX phase and the late transition metal halides. The approach is a top-down route that enables the late transitional element atom (Zn in the present case) to occupy the A site in the pre-existing MAX phase structure. Using this replacement reaction between Zn element from molten ZnCl2 and Al element in MAX phase precursors "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.05120","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:50:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZYgMr2f4WPalRlBzwV1Gd4rXlDn1DXeDZ4nWOOfl6o2mA1drWmZY4d6OZrY0VP9p/H+q1sZxuv+0VfaGDwn0DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T12:54:01.304044Z"},"content_sha256":"cd8244583e892b6b20b6dd9de407539e03c6b9af014bcfdd601bc833ea1a8cdd","schema_version":"1.0","event_id":"sha256:cd8244583e892b6b20b6dd9de407539e03c6b9af014bcfdd601bc833ea1a8cdd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NXB4BYQ45M6ZY5YQ4R726EGA6Z/bundle.json","state_url":"https://pith.science/pith/NXB4BYQ45M6ZY5YQ4R726EGA6Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NXB4BYQ45M6ZY5YQ4R726EGA6Z/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":"2026-06-10T12:54:01Z","links":{"resolver":"https://pith.science/pith/NXB4BYQ45M6ZY5YQ4R726EGA6Z","bundle":"https://pith.science/pith/NXB4BYQ45M6ZY5YQ4R726EGA6Z/bundle.json","state":"https://pith.science/pith/NXB4BYQ45M6ZY5YQ4R726EGA6Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NXB4BYQ45M6ZY5YQ4R726EGA6Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NXB4BYQ45M6ZY5YQ4R726EGA6Z","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":"2ff7edae7f00816cebf10b2362d4ee7279367b7a1fae6f9d395a2194eab30275","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-16T02:58:59Z","title_canon_sha256":"179bab9a10a8767c7e13728b8c3a1f2bbe24209eb653147f8eddfc37fb00eee4"},"schema_version":"1.0","source":{"id":"1901.05120","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.05120","created_at":"2026-05-17T23:50:48Z"},{"alias_kind":"arxiv_version","alias_value":"1901.05120v2","created_at":"2026-05-17T23:50:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.05120","created_at":"2026-05-17T23:50:48Z"},{"alias_kind":"pith_short_12","alias_value":"NXB4BYQ45M6Z","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NXB4BYQ45M6ZY5YQ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NXB4BYQ4","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:cd8244583e892b6b20b6dd9de407539e03c6b9af014bcfdd601bc833ea1a8cdd","target":"graph","created_at":"2026-05-17T23:50:48Z","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":"Nanolaminated materials are important because of their exceptional properties and wide range of applications. Here, we demonstrate a general approach to synthesize a series of Zn-based MAX phases and Cl-terminated MXenes originating from the replacement reaction between the MAX phase and the late transition metal halides. The approach is a top-down route that enables the late transitional element atom (Zn in the present case) to occupy the A site in the pre-existing MAX phase structure. Using this replacement reaction between Zn element from molten ZnCl2 and Al element in MAX phase precursors ","authors_text":"Jie Zhou, Johanna Rosen, Jun Lu, Kan Luo, Ke Chen, Keke Chang, Lars Hultman, Mian Li, Per Eklund, Per O.{\\AA}. Persson, Qing Huang, Shiyu Du, Youbing Li, Zhengren Huang, Zhifang Chai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-16T02:58:59Z","title":"Element Replacement Approach by Reaction with Lewis Acidic Molten Salts to Synthesize Nanolaminated MAX Phases and MXenes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.05120","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:dc7623ca53872015eb17789c7355fd4bd1706a4e817755daf5e02390add546db","target":"record","created_at":"2026-05-17T23:50:48Z","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":"2ff7edae7f00816cebf10b2362d4ee7279367b7a1fae6f9d395a2194eab30275","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-16T02:58:59Z","title_canon_sha256":"179bab9a10a8767c7e13728b8c3a1f2bbe24209eb653147f8eddfc37fb00eee4"},"schema_version":"1.0","source":{"id":"1901.05120","kind":"arxiv","version":2}},"canonical_sha256":"6dc3c0e21ceb3d9c7710e47faf10c0f6734c4d5d2697a8c7eb294d1a2afe9e27","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6dc3c0e21ceb3d9c7710e47faf10c0f6734c4d5d2697a8c7eb294d1a2afe9e27","first_computed_at":"2026-05-17T23:50:48.602209Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:48.602209Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZRYsKJgJefb38uLoUKjKeZJ3KlLMmFKupyVrYKGz9X+GmLHJGB1EUVcPO4eDVdAe8L4riJ6Y3QVuMgbrYdOEAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:48.602724Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.05120","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc7623ca53872015eb17789c7355fd4bd1706a4e817755daf5e02390add546db","sha256:cd8244583e892b6b20b6dd9de407539e03c6b9af014bcfdd601bc833ea1a8cdd"],"state_sha256":"a3e4be47913c1559767326fc9324b2347bd5d4b383cb0952dd83f8734287add5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dv43X1DFNpnLYNElhBkLQlUeLKXuRSmqqX7JeO1RMt30IIPxSTWLO6hfb63P9xj4Xwx1mpFpLzPJ/ucbRzNYCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T12:54:01.308142Z","bundle_sha256":"dd4884d91f7fef437b5306cf90f2071d1f78f65a98ffc0f3392321ddf608cee1"}}