{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:3NXAY7BRXVVP4C2G3PAJDYVPLI","short_pith_number":"pith:3NXAY7BR","schema_version":"1.0","canonical_sha256":"db6e0c7c31bd6afe0b46dbc091e2af5a18e8991732de654207155a18b107a01d","source":{"kind":"arxiv","id":"2302.04474","version":1},"attestation_state":"computed","paper":{"title":"On-Chip Chemical Sensing Using Double-slot Silicon Waveguide","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Akshay Keloth, Shankar Kumar Selvaraja, Sushma Gali","submitted_at":"2023-02-09T07:34:50Z","abstract_excerpt":"In this paper, we present refractive index measurement using a double-slot silicon waveguide-based Mach Zehnder interferometer. We present a double-slot waveguide that offers the best sensitivity and limit of detection compared to wire and single-slot waveguides. We demonstrate ultra-low loss coupling between a single-mode waveguide and a double-slot waveguide and experimental proof for double-slot excitation. The double-slot waveguide is used to demonstrate a highly sensitive concentration sensor. An unbalanced Mach-Zehnder is used as the sensor device to demonstrate concentrations of Potassi"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2302.04474","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.optics","submitted_at":"2023-02-09T07:34:50Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"f5a65669e3a2f543f5587a4d4a6f08fe7acd6ed4ec8f578f60ac200b6a990729","abstract_canon_sha256":"1c9293acf12c440f4fffffe6d5cdd70086b38da03f9b269fb6170708f8211112"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:40:14.145725Z","signature_b64":"AEHBw/9KesCYgAVzsOfbIAGR69S3tcFjNlR7VKX+s+qqJ9i1nUctL7GQ6tkyGCyxKIEnOcZ/9bAUeaChRMmYDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"db6e0c7c31bd6afe0b46dbc091e2af5a18e8991732de654207155a18b107a01d","last_reissued_at":"2026-07-05T05:40:14.145238Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:40:14.145238Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On-Chip Chemical Sensing Using Double-slot Silicon Waveguide","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Akshay Keloth, Shankar Kumar Selvaraja, Sushma Gali","submitted_at":"2023-02-09T07:34:50Z","abstract_excerpt":"In this paper, we present refractive index measurement using a double-slot silicon waveguide-based Mach Zehnder interferometer. We present a double-slot waveguide that offers the best sensitivity and limit of detection compared to wire and single-slot waveguides. We demonstrate ultra-low loss coupling between a single-mode waveguide and a double-slot waveguide and experimental proof for double-slot excitation. The double-slot waveguide is used to demonstrate a highly sensitive concentration sensor. An unbalanced Mach-Zehnder is used as the sensor device to demonstrate concentrations of Potassi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.04474","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2302.04474/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2302.04474","created_at":"2026-07-05T05:40:14.145298+00:00"},{"alias_kind":"arxiv_version","alias_value":"2302.04474v1","created_at":"2026-07-05T05:40:14.145298+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.04474","created_at":"2026-07-05T05:40:14.145298+00:00"},{"alias_kind":"pith_short_12","alias_value":"3NXAY7BRXVVP","created_at":"2026-07-05T05:40:14.145298+00:00"},{"alias_kind":"pith_short_16","alias_value":"3NXAY7BRXVVP4C2G","created_at":"2026-07-05T05:40:14.145298+00:00"},{"alias_kind":"pith_short_8","alias_value":"3NXAY7BR","created_at":"2026-07-05T05:40:14.145298+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI","json":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI.json","graph_json":"https://pith.science/api/pith-number/3NXAY7BRXVVP4C2G3PAJDYVPLI/graph.json","events_json":"https://pith.science/api/pith-number/3NXAY7BRXVVP4C2G3PAJDYVPLI/events.json","paper":"https://pith.science/paper/3NXAY7BR"},"agent_actions":{"view_html":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI","download_json":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI.json","view_paper":"https://pith.science/paper/3NXAY7BR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2302.04474&json=true","fetch_graph":"https://pith.science/api/pith-number/3NXAY7BRXVVP4C2G3PAJDYVPLI/graph.json","fetch_events":"https://pith.science/api/pith-number/3NXAY7BRXVVP4C2G3PAJDYVPLI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI/action/storage_attestation","attest_author":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI/action/author_attestation","sign_citation":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI/action/citation_signature","submit_replication":"https://pith.science/pith/3NXAY7BRXVVP4C2G3PAJDYVPLI/action/replication_record"}},"created_at":"2026-07-05T05:40:14.145298+00:00","updated_at":"2026-07-05T05:40:14.145298+00:00"}