{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:CFKSUQN2DUUXGUM23E6O2LDEL6","short_pith_number":"pith:CFKSUQN2","canonical_record":{"source":{"id":"1504.05253","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-20T22:41:19Z","cross_cats_sorted":[],"title_canon_sha256":"0caad4ab166860e1370c4b650afa2098f3cddb0c142ed0306bb7f89385624d0a","abstract_canon_sha256":"36d36827604dc011087186706242f75a70203e3f626db2ad969d82f875e7cd9e"},"schema_version":"1.0"},"canonical_sha256":"11552a41ba1d2973519ad93ced2c645fbd332816a9002bcc64a6c07850a734b8","source":{"kind":"arxiv","id":"1504.05253","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.05253","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"arxiv_version","alias_value":"1504.05253v2","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.05253","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"pith_short_12","alias_value":"CFKSUQN2DUUX","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"CFKSUQN2DUUXGUM2","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"CFKSUQN2","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:CFKSUQN2DUUXGUM23E6O2LDEL6","target":"record","payload":{"canonical_record":{"source":{"id":"1504.05253","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-20T22:41:19Z","cross_cats_sorted":[],"title_canon_sha256":"0caad4ab166860e1370c4b650afa2098f3cddb0c142ed0306bb7f89385624d0a","abstract_canon_sha256":"36d36827604dc011087186706242f75a70203e3f626db2ad969d82f875e7cd9e"},"schema_version":"1.0"},"canonical_sha256":"11552a41ba1d2973519ad93ced2c645fbd332816a9002bcc64a6c07850a734b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:47.254626Z","signature_b64":"TXHXu9he6YqYzJy4OTimc4yt/HccPABYOhXgDd1yj2eBI0Gdb5wj0bihOfJ3sSRn1oFWDx5adEhIfwtgYGvDCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11552a41ba1d2973519ad93ced2c645fbd332816a9002bcc64a6c07850a734b8","last_reissued_at":"2026-05-18T01:18:47.253803Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:47.253803Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.05253","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":"2026-05-18T01:18:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HlC25m00XSYvbM6xfYt39ahVy4lvqK58UZYRXwmyv0le5GgHBG2DcNSIZd0AEFexgioM76N59l7p0u59JXJCBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:39:25.308695Z"},"content_sha256":"a8eeab25842b75464ec34f992440dee7acb21cd42d745bee8dec45f47d8082ad","schema_version":"1.0","event_id":"sha256:a8eeab25842b75464ec34f992440dee7acb21cd42d745bee8dec45f47d8082ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:CFKSUQN2DUUXGUM23E6O2LDEL6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Switchable friction enabled by nanoscale self-assembly on graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"David Goldhaber-Gordon, Francois Amet, Guangyu Zhang, Jun Wang, Kenji Watanabe, Menyoung Lee, Patrick Gallagher, Petro Maksymovych, Shuopei Wang, Takashi Taniguchi, Xiaobo Lu","submitted_at":"2015-04-20T22:41:19Z","abstract_excerpt":"Graphene monolayers are known to display domains of anisotropic friction with twofold symmetry and anisotropy exceeding 200 percent. This anisotropy has been thought to originate from periodic nanoscale ripples in the graphene sheet, which enhance puckering around a sliding asperity to a degree determined by the sliding direction. Here we demonstrate that these frictional domains derive not from structural features in the graphene, but from self-assembly of atmospheric adsorbates into a highly regular superlattice of stripes with period 4 to 6 nm. The stripes and resulting frictional domains a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.05253","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":"2026-05-18T01:18:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i4NAqEtiweCqhgdfF6/dmuLvCPrGPijR2eLP8Cbc3mWImig2z3R8mhhBgrmnlf42N7bTTEhNK0LK7iKFpMUzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:39:25.309409Z"},"content_sha256":"a8d11933885e224e3bbf44c61ada1af56218407aa1e54a1b4b1d2bfe5d5e0f9d","schema_version":"1.0","event_id":"sha256:a8d11933885e224e3bbf44c61ada1af56218407aa1e54a1b4b1d2bfe5d5e0f9d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CFKSUQN2DUUXGUM23E6O2LDEL6/bundle.json","state_url":"https://pith.science/pith/CFKSUQN2DUUXGUM23E6O2LDEL6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CFKSUQN2DUUXGUM23E6O2LDEL6/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":"2026-05-25T13:39:25Z","links":{"resolver":"https://pith.science/pith/CFKSUQN2DUUXGUM23E6O2LDEL6","bundle":"https://pith.science/pith/CFKSUQN2DUUXGUM23E6O2LDEL6/bundle.json","state":"https://pith.science/pith/CFKSUQN2DUUXGUM23E6O2LDEL6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CFKSUQN2DUUXGUM23E6O2LDEL6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:CFKSUQN2DUUXGUM23E6O2LDEL6","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":"36d36827604dc011087186706242f75a70203e3f626db2ad969d82f875e7cd9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-20T22:41:19Z","title_canon_sha256":"0caad4ab166860e1370c4b650afa2098f3cddb0c142ed0306bb7f89385624d0a"},"schema_version":"1.0","source":{"id":"1504.05253","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.05253","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"arxiv_version","alias_value":"1504.05253v2","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.05253","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"pith_short_12","alias_value":"CFKSUQN2DUUX","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"CFKSUQN2DUUXGUM2","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"CFKSUQN2","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:a8d11933885e224e3bbf44c61ada1af56218407aa1e54a1b4b1d2bfe5d5e0f9d","target":"graph","created_at":"2026-05-18T01:18:47Z","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":"Graphene monolayers are known to display domains of anisotropic friction with twofold symmetry and anisotropy exceeding 200 percent. This anisotropy has been thought to originate from periodic nanoscale ripples in the graphene sheet, which enhance puckering around a sliding asperity to a degree determined by the sliding direction. Here we demonstrate that these frictional domains derive not from structural features in the graphene, but from self-assembly of atmospheric adsorbates into a highly regular superlattice of stripes with period 4 to 6 nm. The stripes and resulting frictional domains a","authors_text":"David Goldhaber-Gordon, Francois Amet, Guangyu Zhang, Jun Wang, Kenji Watanabe, Menyoung Lee, Patrick Gallagher, Petro Maksymovych, Shuopei Wang, Takashi Taniguchi, Xiaobo Lu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-20T22:41:19Z","title":"Switchable friction enabled by nanoscale self-assembly on graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.05253","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:a8eeab25842b75464ec34f992440dee7acb21cd42d745bee8dec45f47d8082ad","target":"record","created_at":"2026-05-18T01:18:47Z","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":"36d36827604dc011087186706242f75a70203e3f626db2ad969d82f875e7cd9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-20T22:41:19Z","title_canon_sha256":"0caad4ab166860e1370c4b650afa2098f3cddb0c142ed0306bb7f89385624d0a"},"schema_version":"1.0","source":{"id":"1504.05253","kind":"arxiv","version":2}},"canonical_sha256":"11552a41ba1d2973519ad93ced2c645fbd332816a9002bcc64a6c07850a734b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11552a41ba1d2973519ad93ced2c645fbd332816a9002bcc64a6c07850a734b8","first_computed_at":"2026-05-18T01:18:47.253803Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:47.253803Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TXHXu9he6YqYzJy4OTimc4yt/HccPABYOhXgDd1yj2eBI0Gdb5wj0bihOfJ3sSRn1oFWDx5adEhIfwtgYGvDCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:47.254626Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.05253","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8eeab25842b75464ec34f992440dee7acb21cd42d745bee8dec45f47d8082ad","sha256:a8d11933885e224e3bbf44c61ada1af56218407aa1e54a1b4b1d2bfe5d5e0f9d"],"state_sha256":"0328669f14e9552fa61d45751c72a770ad0c86a0ebef24dde4de8f6ff13fabad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ec1YcLTwGmRI+yLINFhJTFFB4KLZ4UluXgjc1tcAvCXb374yJr+UoyMAQ3QVmDFcyWP0YofplsG4ah5+IhBABg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:39:25.313242Z","bundle_sha256":"1b47504b1969e8db9f2166f651efbdd4db233ce1ea76fe121edc0da6aadd767d"}}