{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:OG7BPDPBDHLS6TWCNVELAFBCYU","short_pith_number":"pith:OG7BPDPB","canonical_record":{"source":{"id":"1601.05753","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-01-21T19:01:28Z","cross_cats_sorted":[],"title_canon_sha256":"c67d0536e8dffe7ec98f11e7c6ad16224d9231f0633f6ef29311d610fcd65dd1","abstract_canon_sha256":"9178cba31cec64ab62677f82ec098d1a47526fdfb756be88d66453b5ebe42834"},"schema_version":"1.0"},"canonical_sha256":"71be178de119d72f4ec26d48b01422c52138a5c6cbca9f459d8c4b71a05de2d3","source":{"kind":"arxiv","id":"1601.05753","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05753","created_at":"2026-05-18T00:52:55Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05753v4","created_at":"2026-05-18T00:52:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05753","created_at":"2026-05-18T00:52:55Z"},{"alias_kind":"pith_short_12","alias_value":"OG7BPDPBDHLS","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OG7BPDPBDHLS6TWC","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OG7BPDPB","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:OG7BPDPBDHLS6TWCNVELAFBCYU","target":"record","payload":{"canonical_record":{"source":{"id":"1601.05753","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-01-21T19:01:28Z","cross_cats_sorted":[],"title_canon_sha256":"c67d0536e8dffe7ec98f11e7c6ad16224d9231f0633f6ef29311d610fcd65dd1","abstract_canon_sha256":"9178cba31cec64ab62677f82ec098d1a47526fdfb756be88d66453b5ebe42834"},"schema_version":"1.0"},"canonical_sha256":"71be178de119d72f4ec26d48b01422c52138a5c6cbca9f459d8c4b71a05de2d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:55.455574Z","signature_b64":"jREfQHkanSNGn7cAJ8pppIHfswb9d+fak+0zwLvNOFw/F3/1Fqlhy4drdIbMyNZeAuQ0M5aHOeXKkMz6qNvnDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"71be178de119d72f4ec26d48b01422c52138a5c6cbca9f459d8c4b71a05de2d3","last_reissued_at":"2026-05-18T00:52:55.455112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:55.455112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.05753","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:52:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"90Yt+/5QTvsGwSM5iPk+P6Qyv8wM8L5AWeA+WTJXLLns3ukQI//DgLmMuPJSg5hDJiviejv0SmuV71QcySf8Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:00:53.387582Z"},"content_sha256":"88b04e21a0a81e4c09d09a691b32f4ee80faf2a65a7141d5f1d00b1f68e8feb9","schema_version":"1.0","event_id":"sha256:88b04e21a0a81e4c09d09a691b32f4ee80faf2a65a7141d5f1d00b1f68e8feb9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:OG7BPDPBDHLS6TWCNVELAFBCYU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultra-confined acoustic THz graphene plasmons revealed by photocurrent nanoscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Achim Woessner, Alessandro Principi, Alexey Y. Nikitin, Andreas. J. Huber, Frank H. L. Koppens, James Hone, Kenji Watanabe, Luis E. Hueso, Marco Polini, Mark B. Lundeberg, Nicolo Forcellini, Pablo Alonso-Gonzalez, Rainer Hillenbrand, Saul Velez, Takashi Taniguchi, Wenjing Yan, Yuanda Gao","submitted_at":"2016-01-21T19:01:28Z","abstract_excerpt":"Terahertz (THz) fields are widely applied for sensing, communication and quality control. In future applications, they could be efficiently confined, enhanced and manipulated - well below the classical diffraction limit - through the excitation of graphene plasmons (GPs). These possibilities emerge from the strongly reduced GP wavelength, lp, compared to the photon wavelength, l0, which can be controlled by modulating the carrier density of graphene via electrical gating. Recently, GPs in a graphene-insulator-metal configuration have been predicted to exhibit a linear dispersion (thus called a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05753","kind":"arxiv","version":4},"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":"2026-05-18T00:52:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RmMlbDnu25FJZkfFunpgFlMoKDVUNBE2PCZjtBcUR2jyK+siowhW6ihS1kwPe10mC+y03RkA2LtLmvc2H8diBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:00:53.387927Z"},"content_sha256":"201d3650d13bcf0e36fb30f8327eb0ff1b516f0cfd0503425a02ec63cfb31f38","schema_version":"1.0","event_id":"sha256:201d3650d13bcf0e36fb30f8327eb0ff1b516f0cfd0503425a02ec63cfb31f38"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OG7BPDPBDHLS6TWCNVELAFBCYU/bundle.json","state_url":"https://pith.science/pith/OG7BPDPBDHLS6TWCNVELAFBCYU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OG7BPDPBDHLS6TWCNVELAFBCYU/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":"2026-06-01T17:00:53Z","links":{"resolver":"https://pith.science/pith/OG7BPDPBDHLS6TWCNVELAFBCYU","bundle":"https://pith.science/pith/OG7BPDPBDHLS6TWCNVELAFBCYU/bundle.json","state":"https://pith.science/pith/OG7BPDPBDHLS6TWCNVELAFBCYU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OG7BPDPBDHLS6TWCNVELAFBCYU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:OG7BPDPBDHLS6TWCNVELAFBCYU","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":"9178cba31cec64ab62677f82ec098d1a47526fdfb756be88d66453b5ebe42834","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-01-21T19:01:28Z","title_canon_sha256":"c67d0536e8dffe7ec98f11e7c6ad16224d9231f0633f6ef29311d610fcd65dd1"},"schema_version":"1.0","source":{"id":"1601.05753","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05753","created_at":"2026-05-18T00:52:55Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05753v4","created_at":"2026-05-18T00:52:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05753","created_at":"2026-05-18T00:52:55Z"},{"alias_kind":"pith_short_12","alias_value":"OG7BPDPBDHLS","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OG7BPDPBDHLS6TWC","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OG7BPDPB","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:201d3650d13bcf0e36fb30f8327eb0ff1b516f0cfd0503425a02ec63cfb31f38","target":"graph","created_at":"2026-05-18T00:52:55Z","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":"Terahertz (THz) fields are widely applied for sensing, communication and quality control. In future applications, they could be efficiently confined, enhanced and manipulated - well below the classical diffraction limit - through the excitation of graphene plasmons (GPs). These possibilities emerge from the strongly reduced GP wavelength, lp, compared to the photon wavelength, l0, which can be controlled by modulating the carrier density of graphene via electrical gating. Recently, GPs in a graphene-insulator-metal configuration have been predicted to exhibit a linear dispersion (thus called a","authors_text":"Achim Woessner, Alessandro Principi, Alexey Y. Nikitin, Andreas. J. Huber, Frank H. L. Koppens, James Hone, Kenji Watanabe, Luis E. Hueso, Marco Polini, Mark B. Lundeberg, Nicolo Forcellini, Pablo Alonso-Gonzalez, Rainer Hillenbrand, Saul Velez, Takashi Taniguchi, Wenjing Yan, Yuanda Gao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-01-21T19:01:28Z","title":"Ultra-confined acoustic THz graphene plasmons revealed by photocurrent nanoscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05753","kind":"arxiv","version":4},"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":"sha256:88b04e21a0a81e4c09d09a691b32f4ee80faf2a65a7141d5f1d00b1f68e8feb9","target":"record","created_at":"2026-05-18T00:52:55Z","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":"9178cba31cec64ab62677f82ec098d1a47526fdfb756be88d66453b5ebe42834","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-01-21T19:01:28Z","title_canon_sha256":"c67d0536e8dffe7ec98f11e7c6ad16224d9231f0633f6ef29311d610fcd65dd1"},"schema_version":"1.0","source":{"id":"1601.05753","kind":"arxiv","version":4}},"canonical_sha256":"71be178de119d72f4ec26d48b01422c52138a5c6cbca9f459d8c4b71a05de2d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71be178de119d72f4ec26d48b01422c52138a5c6cbca9f459d8c4b71a05de2d3","first_computed_at":"2026-05-18T00:52:55.455112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:55.455112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jREfQHkanSNGn7cAJ8pppIHfswb9d+fak+0zwLvNOFw/F3/1Fqlhy4drdIbMyNZeAuQ0M5aHOeXKkMz6qNvnDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:55.455574Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.05753","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88b04e21a0a81e4c09d09a691b32f4ee80faf2a65a7141d5f1d00b1f68e8feb9","sha256:201d3650d13bcf0e36fb30f8327eb0ff1b516f0cfd0503425a02ec63cfb31f38"],"state_sha256":"2f71f662e413cea2b1e3ce44e101a5ce270c23258e5b03c5142a7eec301f8fad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k1b9pPignA8jQkshbo7WTmNa769SXjVfLY3esW9Gchv1y99zl2rNZeDaV8akTDBaA+RbsjLhAufjzraKWmfSBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:00:53.389825Z","bundle_sha256":"4b9fec28e7c1f2a2ea7068e0b91d4f35bcf6995ab3da93f5868677bd48c0cad4"}}