{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:XM7IH4264Q7ENLSLLYEWFBTAF3","short_pith_number":"pith:XM7IH426","canonical_record":{"source":{"id":"1810.06149","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-15T01:58:14Z","cross_cats_sorted":[],"title_canon_sha256":"bd703aa606c2af8e26d9ea37d2fda73331ca197ed0bfb5b30b3bed4f20208836","abstract_canon_sha256":"7747f454a9368980ddce07a84a5e654a4a7f32ed82c75e71f43b271375465950"},"schema_version":"1.0"},"canonical_sha256":"bb3e83f35ee43e46ae4b5e096286602ef5947b4a8b234f31a91c348d861f9141","source":{"kind":"arxiv","id":"1810.06149","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.06149","created_at":"2026-05-18T00:03:21Z"},{"alias_kind":"arxiv_version","alias_value":"1810.06149v1","created_at":"2026-05-18T00:03:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.06149","created_at":"2026-05-18T00:03:21Z"},{"alias_kind":"pith_short_12","alias_value":"XM7IH4264Q7E","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XM7IH4264Q7ENLSL","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XM7IH426","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:XM7IH4264Q7ENLSLLYEWFBTAF3","target":"record","payload":{"canonical_record":{"source":{"id":"1810.06149","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-15T01:58:14Z","cross_cats_sorted":[],"title_canon_sha256":"bd703aa606c2af8e26d9ea37d2fda73331ca197ed0bfb5b30b3bed4f20208836","abstract_canon_sha256":"7747f454a9368980ddce07a84a5e654a4a7f32ed82c75e71f43b271375465950"},"schema_version":"1.0"},"canonical_sha256":"bb3e83f35ee43e46ae4b5e096286602ef5947b4a8b234f31a91c348d861f9141","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:21.270866Z","signature_b64":"Jxz8WwMf8iFTb6k3xBVIw8bm8pyxLPo9HPhsiJkrYOWVWUKScgZukmNVypJextTH7MJzysuNMA8w/dmB2eQRDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bb3e83f35ee43e46ae4b5e096286602ef5947b4a8b234f31a91c348d861f9141","last_reissued_at":"2026-05-18T00:03:21.270331Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:21.270331Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.06149","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":"2026-05-18T00:03:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"auZ70KKS603S1aZ7COMfRTxMhOFpwmmtPmHwVnPYvJ0ZwGW5DesCXzEVeq3+0tcdooucpRXDGS1whXJxPNo2DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:27:30.602547Z"},"content_sha256":"226b6d6df4573c78c2509900b6ccd78eecb233701505dfca070d16306af76b74","schema_version":"1.0","event_id":"sha256:226b6d6df4573c78c2509900b6ccd78eecb233701505dfca070d16306af76b74"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:XM7IH4264Q7ENLSLLYEWFBTAF3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unidirectional emission in an all-dielectric nanoantenna","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Tianhua Feng, Wei Zhang, Yi Xu, Zixian Liang","submitted_at":"2018-10-15T01:58:14Z","abstract_excerpt":"All-dielectric nanoantennas are a promising alternative to plasmonic optical antennas for engineering light emission because of their low-loss nature in the optical spectrum. Nevertheless, it is still challenging to manipulate directional light emission with subwavelength all-dielectric nanoantennas. Here, we propose and numerically demonstrate that a hollow silicon nanodisk can serve as a versatile antenna for directing and enhancing the emission from either an electric or magnetic dipole emitter. When primarily coupled to both electric and magnetic dipole modes of a nanoantenna, broadband ne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.06149","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":"2026-05-18T00:03:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QbzFwX5eNgul9WClWFBS3+GIRmKR3x4ho4sD+3bQBz3IJULs5CddkTHAQPPsBm4Ka20W8ZRSsVXLYkIbqDJ+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:27:30.603265Z"},"content_sha256":"d4dd1c4fee66a53fb617ce767096ba774178a189f8a0019873f7f58beadb3e5e","schema_version":"1.0","event_id":"sha256:d4dd1c4fee66a53fb617ce767096ba774178a189f8a0019873f7f58beadb3e5e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XM7IH4264Q7ENLSLLYEWFBTAF3/bundle.json","state_url":"https://pith.science/pith/XM7IH4264Q7ENLSLLYEWFBTAF3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XM7IH4264Q7ENLSLLYEWFBTAF3/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":"2026-05-27T02:27:30Z","links":{"resolver":"https://pith.science/pith/XM7IH4264Q7ENLSLLYEWFBTAF3","bundle":"https://pith.science/pith/XM7IH4264Q7ENLSLLYEWFBTAF3/bundle.json","state":"https://pith.science/pith/XM7IH4264Q7ENLSLLYEWFBTAF3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XM7IH4264Q7ENLSLLYEWFBTAF3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XM7IH4264Q7ENLSLLYEWFBTAF3","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":"7747f454a9368980ddce07a84a5e654a4a7f32ed82c75e71f43b271375465950","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-15T01:58:14Z","title_canon_sha256":"bd703aa606c2af8e26d9ea37d2fda73331ca197ed0bfb5b30b3bed4f20208836"},"schema_version":"1.0","source":{"id":"1810.06149","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.06149","created_at":"2026-05-18T00:03:21Z"},{"alias_kind":"arxiv_version","alias_value":"1810.06149v1","created_at":"2026-05-18T00:03:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.06149","created_at":"2026-05-18T00:03:21Z"},{"alias_kind":"pith_short_12","alias_value":"XM7IH4264Q7E","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XM7IH4264Q7ENLSL","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XM7IH426","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:d4dd1c4fee66a53fb617ce767096ba774178a189f8a0019873f7f58beadb3e5e","target":"graph","created_at":"2026-05-18T00:03:21Z","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":"All-dielectric nanoantennas are a promising alternative to plasmonic optical antennas for engineering light emission because of their low-loss nature in the optical spectrum. Nevertheless, it is still challenging to manipulate directional light emission with subwavelength all-dielectric nanoantennas. Here, we propose and numerically demonstrate that a hollow silicon nanodisk can serve as a versatile antenna for directing and enhancing the emission from either an electric or magnetic dipole emitter. When primarily coupled to both electric and magnetic dipole modes of a nanoantenna, broadband ne","authors_text":"Tianhua Feng, Wei Zhang, Yi Xu, Zixian Liang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-15T01:58:14Z","title":"Unidirectional emission in an all-dielectric nanoantenna"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.06149","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":"sha256:226b6d6df4573c78c2509900b6ccd78eecb233701505dfca070d16306af76b74","target":"record","created_at":"2026-05-18T00:03:21Z","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":"7747f454a9368980ddce07a84a5e654a4a7f32ed82c75e71f43b271375465950","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-15T01:58:14Z","title_canon_sha256":"bd703aa606c2af8e26d9ea37d2fda73331ca197ed0bfb5b30b3bed4f20208836"},"schema_version":"1.0","source":{"id":"1810.06149","kind":"arxiv","version":1}},"canonical_sha256":"bb3e83f35ee43e46ae4b5e096286602ef5947b4a8b234f31a91c348d861f9141","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb3e83f35ee43e46ae4b5e096286602ef5947b4a8b234f31a91c348d861f9141","first_computed_at":"2026-05-18T00:03:21.270331Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:21.270331Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jxz8WwMf8iFTb6k3xBVIw8bm8pyxLPo9HPhsiJkrYOWVWUKScgZukmNVypJextTH7MJzysuNMA8w/dmB2eQRDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:21.270866Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.06149","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:226b6d6df4573c78c2509900b6ccd78eecb233701505dfca070d16306af76b74","sha256:d4dd1c4fee66a53fb617ce767096ba774178a189f8a0019873f7f58beadb3e5e"],"state_sha256":"79e0a28472f75c0f3591947a8b57eb52aa2e92d2d48da97a05f10c34fc073e73"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"03Pd+bq9wMpG72DYHZeHReLD81Q4ncSZwT7fjj5vmuXfbttlX/YH7v3OQ0rP0sXo3imk64K7zusFZ+GCffsgDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:27:30.606928Z","bundle_sha256":"e7ff919134f3e2902c4ca1ab820e633beb08addc2fab0181d9d89cb47bdb6cd9"}}