{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:AXE6M3UFWIN2UUC24E5ZYTIBVS","short_pith_number":"pith:AXE6M3UF","canonical_record":{"source":{"id":"1806.01970","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-06T00:56:31Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"15877051d105dab121d82bf1e00721be87396494680d3b9a841ee463115df5a5","abstract_canon_sha256":"b7332cf11ac4ac14c1e58eee9235c127b642b0191bf376079e4df2ad88dd01d6"},"schema_version":"1.0"},"canonical_sha256":"05c9e66e85b21baa505ae13b9c4d01ac9da5f18322aa795c655158b70d83cca3","source":{"kind":"arxiv","id":"1806.01970","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.01970","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"arxiv_version","alias_value":"1806.01970v2","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.01970","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"pith_short_12","alias_value":"AXE6M3UFWIN2","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AXE6M3UFWIN2UUC2","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AXE6M3UF","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:AXE6M3UFWIN2UUC24E5ZYTIBVS","target":"record","payload":{"canonical_record":{"source":{"id":"1806.01970","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-06T00:56:31Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"15877051d105dab121d82bf1e00721be87396494680d3b9a841ee463115df5a5","abstract_canon_sha256":"b7332cf11ac4ac14c1e58eee9235c127b642b0191bf376079e4df2ad88dd01d6"},"schema_version":"1.0"},"canonical_sha256":"05c9e66e85b21baa505ae13b9c4d01ac9da5f18322aa795c655158b70d83cca3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:02.474447Z","signature_b64":"6y04l7X9rPRWlsQ9jWVIfDZJcK4c3zwpQv03ctuB8i2AYoLr6nvNtL70ZADphzxDFm6GWNxfWtsGv4sCJykVDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05c9e66e85b21baa505ae13b9c4d01ac9da5f18322aa795c655158b70d83cca3","last_reissued_at":"2026-05-18T00:04:02.473742Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:02.473742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.01970","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":"2026-05-18T00:04:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3NTKZj02GcUaz9334rjJQQji8al8ot6U6u49kJLhKBRS6bbH2TX+VbX15wJ3iZ3KT8ImZDZmAjg8XRj7ViKWCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T22:39:23.111230Z"},"content_sha256":"65f17b3959c124f85c5767bcb756d1e41e19d365f0754b59ab66bc5d03fa07c9","schema_version":"1.0","event_id":"sha256:65f17b3959c124f85c5767bcb756d1e41e19d365f0754b59ab66bc5d03fa07c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:AXE6M3UFWIN2UUC24E5ZYTIBVS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Controlling electron flow in anisotropic Dirac materials heterojunctions: a super-diverging lens","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Y. Betancur-Ocampo","submitted_at":"2018-06-06T00:56:31Z","abstract_excerpt":"Ballistic heterojunctions of Dirac materials offer the opportunity of exploring optics-like phenomena in electronic systems. In this paper, a new perfect lens through special positive refraction is predicted with omnidirectional Klein tunneling of massless Dirac fermions. The novel optics component called a super-diverging lens (SDL) is the counterpart of a Veselago lens (VL). The use of SDL and VL creates a device that simulates the ocular vision. This atypical refraction is due to electrons obeying different Snell's laws of pseudo-spin and group velocity in heterojunctions with elliptical Di"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.01970","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":"2026-05-18T00:04:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0DtqfdyjzV73jZ4GiEIaVsby9D7dihhVHyknPneYbTCu8L2feoR3E4hAErhd+/CodbNBwihxvjjQlEfqoS5mBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T22:39:23.111832Z"},"content_sha256":"a40a07449262fe879495129009fbb32e806aa0fe7a9b6d9f94eba58b0af500f2","schema_version":"1.0","event_id":"sha256:a40a07449262fe879495129009fbb32e806aa0fe7a9b6d9f94eba58b0af500f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AXE6M3UFWIN2UUC24E5ZYTIBVS/bundle.json","state_url":"https://pith.science/pith/AXE6M3UFWIN2UUC24E5ZYTIBVS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AXE6M3UFWIN2UUC24E5ZYTIBVS/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":"2026-06-08T22:39:23Z","links":{"resolver":"https://pith.science/pith/AXE6M3UFWIN2UUC24E5ZYTIBVS","bundle":"https://pith.science/pith/AXE6M3UFWIN2UUC24E5ZYTIBVS/bundle.json","state":"https://pith.science/pith/AXE6M3UFWIN2UUC24E5ZYTIBVS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AXE6M3UFWIN2UUC24E5ZYTIBVS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:AXE6M3UFWIN2UUC24E5ZYTIBVS","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":"b7332cf11ac4ac14c1e58eee9235c127b642b0191bf376079e4df2ad88dd01d6","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-06T00:56:31Z","title_canon_sha256":"15877051d105dab121d82bf1e00721be87396494680d3b9a841ee463115df5a5"},"schema_version":"1.0","source":{"id":"1806.01970","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.01970","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"arxiv_version","alias_value":"1806.01970v2","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.01970","created_at":"2026-05-18T00:04:02Z"},{"alias_kind":"pith_short_12","alias_value":"AXE6M3UFWIN2","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AXE6M3UFWIN2UUC2","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AXE6M3UF","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:a40a07449262fe879495129009fbb32e806aa0fe7a9b6d9f94eba58b0af500f2","target":"graph","created_at":"2026-05-18T00:04:02Z","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":"Ballistic heterojunctions of Dirac materials offer the opportunity of exploring optics-like phenomena in electronic systems. In this paper, a new perfect lens through special positive refraction is predicted with omnidirectional Klein tunneling of massless Dirac fermions. The novel optics component called a super-diverging lens (SDL) is the counterpart of a Veselago lens (VL). The use of SDL and VL creates a device that simulates the ocular vision. This atypical refraction is due to electrons obeying different Snell's laws of pseudo-spin and group velocity in heterojunctions with elliptical Di","authors_text":"Y. Betancur-Ocampo","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-06T00:56:31Z","title":"Controlling electron flow in anisotropic Dirac materials heterojunctions: a super-diverging lens"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.01970","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":"sha256:65f17b3959c124f85c5767bcb756d1e41e19d365f0754b59ab66bc5d03fa07c9","target":"record","created_at":"2026-05-18T00:04:02Z","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":"b7332cf11ac4ac14c1e58eee9235c127b642b0191bf376079e4df2ad88dd01d6","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-06T00:56:31Z","title_canon_sha256":"15877051d105dab121d82bf1e00721be87396494680d3b9a841ee463115df5a5"},"schema_version":"1.0","source":{"id":"1806.01970","kind":"arxiv","version":2}},"canonical_sha256":"05c9e66e85b21baa505ae13b9c4d01ac9da5f18322aa795c655158b70d83cca3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05c9e66e85b21baa505ae13b9c4d01ac9da5f18322aa795c655158b70d83cca3","first_computed_at":"2026-05-18T00:04:02.473742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:02.473742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6y04l7X9rPRWlsQ9jWVIfDZJcK4c3zwpQv03ctuB8i2AYoLr6nvNtL70ZADphzxDFm6GWNxfWtsGv4sCJykVDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:02.474447Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.01970","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65f17b3959c124f85c5767bcb756d1e41e19d365f0754b59ab66bc5d03fa07c9","sha256:a40a07449262fe879495129009fbb32e806aa0fe7a9b6d9f94eba58b0af500f2"],"state_sha256":"1ce53502cafa61b0f8c0e08e85e87bdc1ce5670af5ef243d10fc32da4f1496a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AX/SreIjXyY7GXoKYFU8fEfxWGrLQVL0ntwe07OMBBEIe0C83PNaKwzwynCXAhou6XlRjXhjRFyrzcuyIWc7Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T22:39:23.114571Z","bundle_sha256":"5bda6302fddcbe785f19be6b8dffe57d6732f08b9e1a36119d488ed1d389cde8"}}