{"paper":{"title":"Single-Device VOC Fingerprinting via Polarization-Selective Anisotropic BeS-Clad Silicon Microring Resonator","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Anisotropic BeS cladding on a silicon microring enables TE and TM modes to produce a two-dimensional optical fingerprint that distinguishes acetone, isoprene, 4-hydroxyhexenal, 2-propenal, and benzene via differential resonance shifts.","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Md Kawsar Alam, Shoumik Debnath, Sudipta Saha","submitted_at":"2026-05-14T17:45:36Z","abstract_excerpt":"A silicon microring resonator with an anisotropic beryllium sulfide (BeS) cladding is proposed for polarization-selective detection of exhaled-breath volatile organic compound biomarkers. The anisotropic dielectric response of BeS enables the transverse-electric (TE) and transverse-magnetic (TM) modes to probe orthogonal components of the cladding permittivity tensor, generating two independent optical observables from a single device. Five clinically relevant biomarkers are investigated: acetone, isoprene, 4-hydroxyhexenal, 2-propenal, and benzene. First-principles optical constants are incor"},"claims":{"count":3,"items":[{"kind":"strongest_claim","text":"The resulting dual-polarization response forms a two-dimensional optical fingerprint that distinguishes all five biomarkers without requiring a sensor array or multiple functionalized resonators.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The first-principles optical constants for BeS accurately represent the real anisotropic permittivity tensor when the material is deposited as a thin cladding on silicon, and that the simulated resonance shifts will match fabricated devices.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Anisotropic BeS cladding on a silicon microring enables TE and TM modes to produce a two-dimensional optical fingerprint that distinguishes acetone, isoprene, 4-hydroxyhexenal, 2-propenal, and benzene via differential resonance shifts.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"}],"snapshot_sha256":"58f0a486117a906ddbf81c15bc6503628de80771b2ea1fc52810c707f630f0b5"},"source":{"id":"2605.15139","kind":"arxiv","version":1},"verdict":{"id":"9399a54e-4573-47cc-a7ca-08dd733135f3","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T02:54:57.709338Z","strongest_claim":"The resulting dual-polarization response forms a two-dimensional optical fingerprint that distinguishes all five biomarkers without requiring a sensor array or multiple functionalized resonators.","one_line_summary":"Anisotropic BeS cladding on a silicon microring enables TE and TM modes to produce a two-dimensional optical fingerprint that distinguishes acetone, isoprene, 4-hydroxyhexenal, 2-propenal, and benzene via differential resonance shifts.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The first-principles optical constants for BeS accurately represent the real anisotropic permittivity tensor when the material is deposited as a thin cladding on silicon, and that the simulated resonance shifts will match fabricated devices.","pith_extraction_headline":""},"references":{"count":49,"sample":[{"doi":"","year":2003,"title":"Abernethy and Gareth M","work_id":"9a5a76b1-14ff-4c6f-b86d-d1ef1e3f910a","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1992,"title":"Arduengo, III, Anthony J. and H. V. Rasika Dias and Richard L. Harlow and Michael Kline , title =. 1992 , volume =","work_id":"3f8acbcc-1822-4739-b54d-fca88f21303e","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1994,"title":"and Siegfried F","work_id":"04dac863-b7cd-4185-b0ff-0f91c3980e80","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2005,"title":"and Zuccaccia, Daniele and Kovacevic, Anes and Chianese, Anthony R","work_id":"544adc50-2561-42b8-8574-0bcf95d2b532","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"Communication from the European Commission to the European Council and the European Parliament: 20 20 by 2020: Europe's climate change opportunity , year =","work_id":"cf8c33d8-dc67-42ed-a59a-d61acc7bef18","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":49,"snapshot_sha256":"970ef6e18951c07a49a9696c5de69e9cadfa440eda279155e785aa475851b07b","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"e0556c2c44582bc47f19e65c39f4c2b1d3dbc6895dd574437b7a54f456541db8"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}