{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:RDINCOB2GUIDZJ6MVXQMEGM3YF","short_pith_number":"pith:RDINCOB2","canonical_record":{"source":{"id":"1302.1843","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-02-07T19:57:55Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"99e5300ec34822bbec877ee314ee6d8bf46a69ede7e0ff7e1acf659f6edfe214","abstract_canon_sha256":"902ea9c180621db7bb57f31ed687cc259ea2cb7ec17dc7e264b57c1f59ba68a5"},"schema_version":"1.0"},"canonical_sha256":"88d0d1383a35103ca7ccade0c2199bc143e4621a99e642a8ca641e8c4f6f9ba9","source":{"kind":"arxiv","id":"1302.1843","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1843","created_at":"2026-05-18T03:34:14Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1843v1","created_at":"2026-05-18T03:34:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1843","created_at":"2026-05-18T03:34:14Z"},{"alias_kind":"pith_short_12","alias_value":"RDINCOB2GUID","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"RDINCOB2GUIDZJ6M","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"RDINCOB2","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:RDINCOB2GUIDZJ6MVXQMEGM3YF","target":"record","payload":{"canonical_record":{"source":{"id":"1302.1843","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-02-07T19:57:55Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"99e5300ec34822bbec877ee314ee6d8bf46a69ede7e0ff7e1acf659f6edfe214","abstract_canon_sha256":"902ea9c180621db7bb57f31ed687cc259ea2cb7ec17dc7e264b57c1f59ba68a5"},"schema_version":"1.0"},"canonical_sha256":"88d0d1383a35103ca7ccade0c2199bc143e4621a99e642a8ca641e8c4f6f9ba9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:34:14.471391Z","signature_b64":"n3zmZycbgBXNXKsSOGkNK+lHrg2hsb4k+VDvba5mLVOTIfP/iiHoZJyWaoi9QbAF1rLFtc3x8fE6suyMC8tLBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88d0d1383a35103ca7ccade0c2199bc143e4621a99e642a8ca641e8c4f6f9ba9","last_reissued_at":"2026-05-18T03:34:14.470435Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:34:14.470435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.1843","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:34:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/GT/w7+6eoEZoiCRG38OiXlKzBbpwYlnIjLRLZPjE9lbmULC8aX1SNPxLGJ0LRtn3dU81X5NraAweFZCIOEcDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T16:20:47.050299Z"},"content_sha256":"461292134032b86f572cbdece57033c0f477a2369544844978eafe955cd6b892","schema_version":"1.0","event_id":"sha256:461292134032b86f572cbdece57033c0f477a2369544844978eafe955cd6b892"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:RDINCOB2GUIDZJ6MVXQMEGM3YF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fermi Velocity Modulation in Graphene by Strain Engineering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Gautam Mukhopadhyay, Harihar Behera","submitted_at":"2013-02-07T19:57:55Z","abstract_excerpt":"Using full-potential density functional theory (DFT) calculations, we found a small asymmetry in the Fermi velocity of electrons and holes in graphene. These Fermi velocity values and their average were found to decrease with increasing in-plane homogeneous biaxial strain; the variation in Fermi velocity is quadratic in strain. The results, which can be verified by Landau level spectroscopy and quantum capacitance measurements of bi-axially strained graphene, promise potential applications in graphene based straintronics and flexible electronics."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1843","kind":"arxiv","version":1},"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":"2026-05-18T03:34:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z6wy3aEiDXfupWAY3NckoKe3U1uD9I+J4NUllPc22ZZ2FvfF5XDnGV4UA6OztHp81krQvoBvMV6pskfzRiNJAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T16:20:47.050660Z"},"content_sha256":"6e37676b3522702b0da61245bf8f9645c5e6c7b82956801ef8a650b362ea1c13","schema_version":"1.0","event_id":"sha256:6e37676b3522702b0da61245bf8f9645c5e6c7b82956801ef8a650b362ea1c13"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RDINCOB2GUIDZJ6MVXQMEGM3YF/bundle.json","state_url":"https://pith.science/pith/RDINCOB2GUIDZJ6MVXQMEGM3YF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RDINCOB2GUIDZJ6MVXQMEGM3YF/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":"2026-06-09T16:20:47Z","links":{"resolver":"https://pith.science/pith/RDINCOB2GUIDZJ6MVXQMEGM3YF","bundle":"https://pith.science/pith/RDINCOB2GUIDZJ6MVXQMEGM3YF/bundle.json","state":"https://pith.science/pith/RDINCOB2GUIDZJ6MVXQMEGM3YF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RDINCOB2GUIDZJ6MVXQMEGM3YF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:RDINCOB2GUIDZJ6MVXQMEGM3YF","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":"902ea9c180621db7bb57f31ed687cc259ea2cb7ec17dc7e264b57c1f59ba68a5","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-02-07T19:57:55Z","title_canon_sha256":"99e5300ec34822bbec877ee314ee6d8bf46a69ede7e0ff7e1acf659f6edfe214"},"schema_version":"1.0","source":{"id":"1302.1843","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1843","created_at":"2026-05-18T03:34:14Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1843v1","created_at":"2026-05-18T03:34:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1843","created_at":"2026-05-18T03:34:14Z"},{"alias_kind":"pith_short_12","alias_value":"RDINCOB2GUID","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"RDINCOB2GUIDZJ6M","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"RDINCOB2","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:6e37676b3522702b0da61245bf8f9645c5e6c7b82956801ef8a650b362ea1c13","target":"graph","created_at":"2026-05-18T03:34:14Z","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":"Using full-potential density functional theory (DFT) calculations, we found a small asymmetry in the Fermi velocity of electrons and holes in graphene. These Fermi velocity values and their average were found to decrease with increasing in-plane homogeneous biaxial strain; the variation in Fermi velocity is quadratic in strain. The results, which can be verified by Landau level spectroscopy and quantum capacitance measurements of bi-axially strained graphene, promise potential applications in graphene based straintronics and flexible electronics.","authors_text":"Gautam Mukhopadhyay, Harihar Behera","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-02-07T19:57:55Z","title":"Fermi Velocity Modulation in Graphene by Strain Engineering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1843","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":"sha256:461292134032b86f572cbdece57033c0f477a2369544844978eafe955cd6b892","target":"record","created_at":"2026-05-18T03:34:14Z","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":"902ea9c180621db7bb57f31ed687cc259ea2cb7ec17dc7e264b57c1f59ba68a5","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-02-07T19:57:55Z","title_canon_sha256":"99e5300ec34822bbec877ee314ee6d8bf46a69ede7e0ff7e1acf659f6edfe214"},"schema_version":"1.0","source":{"id":"1302.1843","kind":"arxiv","version":1}},"canonical_sha256":"88d0d1383a35103ca7ccade0c2199bc143e4621a99e642a8ca641e8c4f6f9ba9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88d0d1383a35103ca7ccade0c2199bc143e4621a99e642a8ca641e8c4f6f9ba9","first_computed_at":"2026-05-18T03:34:14.470435Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:34:14.470435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n3zmZycbgBXNXKsSOGkNK+lHrg2hsb4k+VDvba5mLVOTIfP/iiHoZJyWaoi9QbAF1rLFtc3x8fE6suyMC8tLBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:34:14.471391Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.1843","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:461292134032b86f572cbdece57033c0f477a2369544844978eafe955cd6b892","sha256:6e37676b3522702b0da61245bf8f9645c5e6c7b82956801ef8a650b362ea1c13"],"state_sha256":"68e11da38133157f0591cbbd08f450917c8076ae0f87e0e9f2a94c85564c0e05"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"no0InvdYO4aQ/4wDllW+nBFAMCCVkezmTwKesUmIa8ObkmIe6vA5XJyFHMjo8iPiFdpcvqMPjohRmfTBcn9wCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T16:20:47.052718Z","bundle_sha256":"37735221c8d0f14e693a4c8527a2f02b98b76cccc669900dc852b0c1cdbf2bb5"}}