{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:ND7EMFDPVUWHRVHRVZHDUQRYO6","short_pith_number":"pith:ND7EMFDP","canonical_record":{"source":{"id":"1305.3880","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-16T18:01:32Z","cross_cats_sorted":[],"title_canon_sha256":"9d88c4b92072e3923a4dc08c8b558ebe30ce4a034d688e688ec1b14fa17942dd","abstract_canon_sha256":"24d7be79b5d122d20e31a7d986b24d27673ddef262ea8026279a2cad09776ee9"},"schema_version":"1.0"},"canonical_sha256":"68fe46146fad2c78d4f1ae4e3a423877be8925eba1309983a2c383ee0dcd3e7b","source":{"kind":"arxiv","id":"1305.3880","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3880","created_at":"2026-05-18T03:12:48Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3880v2","created_at":"2026-05-18T03:12:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3880","created_at":"2026-05-18T03:12:48Z"},{"alias_kind":"pith_short_12","alias_value":"ND7EMFDPVUWH","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"ND7EMFDPVUWHRVHR","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"ND7EMFDP","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:ND7EMFDPVUWHRVHRVZHDUQRYO6","target":"record","payload":{"canonical_record":{"source":{"id":"1305.3880","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-16T18:01:32Z","cross_cats_sorted":[],"title_canon_sha256":"9d88c4b92072e3923a4dc08c8b558ebe30ce4a034d688e688ec1b14fa17942dd","abstract_canon_sha256":"24d7be79b5d122d20e31a7d986b24d27673ddef262ea8026279a2cad09776ee9"},"schema_version":"1.0"},"canonical_sha256":"68fe46146fad2c78d4f1ae4e3a423877be8925eba1309983a2c383ee0dcd3e7b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:12:48.166705Z","signature_b64":"jd7I8Tfv/5aeFM+dhG/CBuRRiyqW5YUBpQdsISYzl97xzYWs7p61xiVYkowf03RCqLsWyAI0tIYnYigGHh9EAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68fe46146fad2c78d4f1ae4e3a423877be8925eba1309983a2c383ee0dcd3e7b","last_reissued_at":"2026-05-18T03:12:48.165907Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:12:48.165907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.3880","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":"2026-05-18T03:12:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qr8dBJMcDbo5NrtsOl871Y9X//7ETvthyPHHsOwfpw9tFG2v+q42azBsb3nyXr5VMvwzDBekj4JiJ4tk2KWPBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:10:40.159907Z"},"content_sha256":"73276f0abcad79aca4415fb90d1232b3771a07674feb764178e358b2611de03a","schema_version":"1.0","event_id":"sha256:73276f0abcad79aca4415fb90d1232b3771a07674feb764178e358b2611de03a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:ND7EMFDPVUWHRVHRVZHDUQRYO6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bandgap Engineering of Strained Monolayer and Bilayer MoS2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Bin Wang, Hiram J. Conley, Jed I. Ziegler, Kirill I. Bolotin, Richard F. Haglund Jr., Sokrates T. Pantelides","submitted_at":"2013-05-16T18:01:32Z","abstract_excerpt":"We report the influence of uniaxial tensile mechanical strain in the range 0-2.2% on the phonon spectra and bandstructures of monolayer and bilayer molybdenum disulfide (MoS2) two-dimensional crystals. First, we employ Raman spectroscopy to observe phonon softening with increased strain, breaking the degeneracy in the E' Raman mode of MoS2, and extract a Gr\\\"uneisen parameter of ~1.06. Second, using photoluminescence spectroscopy we measure a decrease in the optical band gap of MoS2 that is roughly linear with strain, ~45 meV% strain for monolayer MoS2 and ~120 meV% strain for bilayer MoS2. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3880","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":"2026-05-18T03:12:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eRCezqnfyIDf6rjdWQIFxijx6c2TpGAXscs8ca78BLeG3pbMqJvC0mECHwjmd2Ml5gOSIhf0L1YM4O36Ik07CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:10:40.160619Z"},"content_sha256":"56f02de4dd78a61c2f0c6913572b5656bf88d336388af70a1b5e602a2e46da52","schema_version":"1.0","event_id":"sha256:56f02de4dd78a61c2f0c6913572b5656bf88d336388af70a1b5e602a2e46da52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ND7EMFDPVUWHRVHRVZHDUQRYO6/bundle.json","state_url":"https://pith.science/pith/ND7EMFDPVUWHRVHRVZHDUQRYO6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ND7EMFDPVUWHRVHRVZHDUQRYO6/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":"2026-05-25T16:10:40Z","links":{"resolver":"https://pith.science/pith/ND7EMFDPVUWHRVHRVZHDUQRYO6","bundle":"https://pith.science/pith/ND7EMFDPVUWHRVHRVZHDUQRYO6/bundle.json","state":"https://pith.science/pith/ND7EMFDPVUWHRVHRVZHDUQRYO6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ND7EMFDPVUWHRVHRVZHDUQRYO6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ND7EMFDPVUWHRVHRVZHDUQRYO6","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":"24d7be79b5d122d20e31a7d986b24d27673ddef262ea8026279a2cad09776ee9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-16T18:01:32Z","title_canon_sha256":"9d88c4b92072e3923a4dc08c8b558ebe30ce4a034d688e688ec1b14fa17942dd"},"schema_version":"1.0","source":{"id":"1305.3880","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3880","created_at":"2026-05-18T03:12:48Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3880v2","created_at":"2026-05-18T03:12:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3880","created_at":"2026-05-18T03:12:48Z"},{"alias_kind":"pith_short_12","alias_value":"ND7EMFDPVUWH","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"ND7EMFDPVUWHRVHR","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"ND7EMFDP","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:56f02de4dd78a61c2f0c6913572b5656bf88d336388af70a1b5e602a2e46da52","target":"graph","created_at":"2026-05-18T03:12:48Z","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":"We report the influence of uniaxial tensile mechanical strain in the range 0-2.2% on the phonon spectra and bandstructures of monolayer and bilayer molybdenum disulfide (MoS2) two-dimensional crystals. First, we employ Raman spectroscopy to observe phonon softening with increased strain, breaking the degeneracy in the E' Raman mode of MoS2, and extract a Gr\\\"uneisen parameter of ~1.06. Second, using photoluminescence spectroscopy we measure a decrease in the optical band gap of MoS2 that is roughly linear with strain, ~45 meV% strain for monolayer MoS2 and ~120 meV% strain for bilayer MoS2. Th","authors_text":"Bin Wang, Hiram J. Conley, Jed I. Ziegler, Kirill I. Bolotin, Richard F. Haglund Jr., Sokrates T. Pantelides","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-16T18:01:32Z","title":"Bandgap Engineering of Strained Monolayer and Bilayer MoS2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3880","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":"sha256:73276f0abcad79aca4415fb90d1232b3771a07674feb764178e358b2611de03a","target":"record","created_at":"2026-05-18T03:12:48Z","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":"24d7be79b5d122d20e31a7d986b24d27673ddef262ea8026279a2cad09776ee9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-05-16T18:01:32Z","title_canon_sha256":"9d88c4b92072e3923a4dc08c8b558ebe30ce4a034d688e688ec1b14fa17942dd"},"schema_version":"1.0","source":{"id":"1305.3880","kind":"arxiv","version":2}},"canonical_sha256":"68fe46146fad2c78d4f1ae4e3a423877be8925eba1309983a2c383ee0dcd3e7b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68fe46146fad2c78d4f1ae4e3a423877be8925eba1309983a2c383ee0dcd3e7b","first_computed_at":"2026-05-18T03:12:48.165907Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:12:48.165907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jd7I8Tfv/5aeFM+dhG/CBuRRiyqW5YUBpQdsISYzl97xzYWs7p61xiVYkowf03RCqLsWyAI0tIYnYigGHh9EAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:12:48.166705Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.3880","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73276f0abcad79aca4415fb90d1232b3771a07674feb764178e358b2611de03a","sha256:56f02de4dd78a61c2f0c6913572b5656bf88d336388af70a1b5e602a2e46da52"],"state_sha256":"9669cd36605bdaa45604a3febf5132c7b1b345a427c2c3ec2426c84bef1078e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uorfLPoBFDR2zN93xlB40UKaXjGlfFosio3GgtbkSFNQ9ETnc2mIyRbGyL3SeCONNuh+MuuvAQr0BI6sbWwcDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:10:40.164509Z","bundle_sha256":"aafe0b788b29901a9c8134cbfd1d2abb11f644a6a88255c7de75749635389cf5"}}