{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:L3P2TRZKQUJKZ4MQVRDKKSJ4KU","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":"6792663407a058f79593a01f4d4d0120adf83d0f5d5b0df0a02c2ef90989aa73","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-08-29T18:37:36Z","title_canon_sha256":"7538623f0b02b1b39519c067f874e593f2a6e935d0a9d63e0f7f0820dfc33413"},"schema_version":"1.0","source":{"id":"1708.08963","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.08963","created_at":"2026-05-18T00:36:21Z"},{"alias_kind":"arxiv_version","alias_value":"1708.08963v1","created_at":"2026-05-18T00:36:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.08963","created_at":"2026-05-18T00:36:21Z"},{"alias_kind":"pith_short_12","alias_value":"L3P2TRZKQUJK","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"L3P2TRZKQUJKZ4MQ","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"L3P2TRZK","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:14888f332bae8e169a644820e3da06a6bf0562b5c02103155c2289b6a51df393","target":"graph","created_at":"2026-05-18T00:36:21Z","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":"Scalable production of all-electronic DNA biosensors with high sensitivity and selectivity is a critical enabling step for research and applications associated with detection of DNA hybridization. We have developed a scalable and very reproducible (> 90% yield) fabrication process for label-free DNA biosensors based upon graphene field effect transistors (GFETs) functionalized with single-stranded probe DNA. The shift of the GFET sensor Dirac point voltage varied systematically with the concentration of target DNA. The biosensors demonstrated a broad analytical range and limit of detection of ","authors_text":"Amey Vrudhula, A. T. Charlie Johnson, Jinglei Ping, Ramya Vishnubhotla","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-08-29T18:37:36Z","title":"Scalable production of high sensitivity, label-free DNA biosensors based on back-gated graphene field-effect transistors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.08963","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":"sha256:4e92894eebe27ddd4752d681ad2357a27ef4250d113a5d5343a33fb721ca389d","target":"record","created_at":"2026-05-18T00:36:21Z","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":"6792663407a058f79593a01f4d4d0120adf83d0f5d5b0df0a02c2ef90989aa73","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-08-29T18:37:36Z","title_canon_sha256":"7538623f0b02b1b39519c067f874e593f2a6e935d0a9d63e0f7f0820dfc33413"},"schema_version":"1.0","source":{"id":"1708.08963","kind":"arxiv","version":1}},"canonical_sha256":"5edfa9c72a8512acf190ac46a5493c55308029dc007d16cde36453932ebf0e0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5edfa9c72a8512acf190ac46a5493c55308029dc007d16cde36453932ebf0e0e","first_computed_at":"2026-05-18T00:36:21.561097Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:21.561097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kBjPcLYMDnBpGq6eMd87e9PjXzT1Tg6/eDN3xqgGlYPNrPNZYary79YFC8y5nzI8nEnxeDQmxf+NxS5pvIs7BA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:21.561789Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.08963","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e92894eebe27ddd4752d681ad2357a27ef4250d113a5d5343a33fb721ca389d","sha256:14888f332bae8e169a644820e3da06a6bf0562b5c02103155c2289b6a51df393"],"state_sha256":"90e69bd4e0d10ce55319ef09cea9afd36c653dba26891d0bdcc846da7df9c14f"}