{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LQQXNNSE7LUKFSBEL3HUJTPVA4","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":"5c43220b221d7d62d9964eb8bc59de6088b7072e18eab5adc48f4576e3874e8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-23T06:21:09Z","title_canon_sha256":"89f2cb02b9dbc0c9fdba956f0da4302d388f50cb89df1d05d0ced9d46209d1cd"},"schema_version":"1.0","source":{"id":"1511.07117","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.07117","created_at":"2026-05-18T01:26:09Z"},{"alias_kind":"arxiv_version","alias_value":"1511.07117v1","created_at":"2026-05-18T01:26:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.07117","created_at":"2026-05-18T01:26:09Z"},{"alias_kind":"pith_short_12","alias_value":"LQQXNNSE7LUK","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LQQXNNSE7LUKFSBE","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LQQXNNSE","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:fe4e598996e9dba2079a96551077b22e0631c9ca66070d139d4580d8c4cbd902","target":"graph","created_at":"2026-05-18T01:26:09Z","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":"The key to achieve high-quality van der Waals heterostructure devices made of stacking various two-dimensional (2D) layered materials lies in the clean interface without bubbles and wrinkles. Although polymethylmethacrylate (PMMA) is generally used as a sacrificial transfer film due to its strong adhesion property, it is always dissolved in the solvent after the transfer, resulting in the unavoidable PMMA residue on the top surface. This makes it difficult to locate clean interface areas. In this work, we present a fully dry PMMA transfer of graphene onto h-BN using a heating/cooling system wh","authors_text":"K. Nagashio, K. Watanabe, T. Taniguchi, T. Uwanno, Y. Hattori","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-23T06:21:09Z","title":"Fully dry PMMA transfer of graphene on h-BN using a heating/cooling system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.07117","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":"sha256:5275c14cd80c983718278c968b0e3a2a50e2ee2fe25edcf3cbaa7ec316a041cb","target":"record","created_at":"2026-05-18T01:26:09Z","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":"5c43220b221d7d62d9964eb8bc59de6088b7072e18eab5adc48f4576e3874e8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-23T06:21:09Z","title_canon_sha256":"89f2cb02b9dbc0c9fdba956f0da4302d388f50cb89df1d05d0ced9d46209d1cd"},"schema_version":"1.0","source":{"id":"1511.07117","kind":"arxiv","version":1}},"canonical_sha256":"5c2176b644fae8a2c8245ecf44cdf5070fd5c477505bd6eaa6b52d09d537e22f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5c2176b644fae8a2c8245ecf44cdf5070fd5c477505bd6eaa6b52d09d537e22f","first_computed_at":"2026-05-18T01:26:09.058284Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:26:09.058284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ntd9B0hhc9pv79O+FjXw3ZSuTvO0exxEW2AMLpSRd4FrKXfDxrgHxfRyJ2TJxCLpV73HBMHF23BQL1J/ubjxDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:26:09.058828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.07117","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5275c14cd80c983718278c968b0e3a2a50e2ee2fe25edcf3cbaa7ec316a041cb","sha256:fe4e598996e9dba2079a96551077b22e0631c9ca66070d139d4580d8c4cbd902"],"state_sha256":"bcba7b5f429cee72e6bd86e65d5e010580ede3c9c523b42e5f50c9db11a8cf44"}