{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T13:49:25Z","timestamp":1790430565427,"version":"4.1.0"},"reference-count":45,"publisher":"Optica Publishing Group","issue":"22","license":[{"start":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T00:00:00Z","timestamp":1665964800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR-OA"},{"start":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T00:00:00Z","timestamp":1665964800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Express"],"published-print":{"date-parts":[[2022,10,24]]},"abstract":"<jats:p>\n                    We conceptualized and numerically investigated a photonic crystal fiber (PCF)-based surface plasmon resonance (SPR) sensor for rapid detection and quantification of novel coronavirus. The plasmonic gold-based optical sensor permits three different ways to quantify the virus concentrations inside patient\u2019s body based on different ligand-analyte conjugate pairs. This photonic biosensor demonstrates viable detections of SARS-CoV-2 spike receptor-binding-domain (RBD), mutated viral single-stranded ribonucleic acid (RNA) and human monoclonal antibody immunoglobulin G (IgG). A marquise-shaped core is introduced to facilitate efficient light-tailoring. Analytes are dissolved in sterile phosphate buffered saline (PBS) and surfaced on the plasmonic metal layer for realizing detection. The 1-pyrene butyric acid n-hydroxy-succinimide ester is numerically used to immobilize the analytes on the sensing interface. Using the finite element method (FEM), the proposed sensor is studied critically and optimized for the refractive index (RI) range from 1.3348-1.3576, since the target analytes RIs fluctuate within this range depending on the severity of the viral infection. The polarization-dependent sensor exhibits dominant sensing attributes for x-polarized mode, where it shows the average wavelength sensitivities of 2,009 nm\/RIU, 2,745 nm\/RIU and 1,984 nm\/RIU for analytes: spike RBD, extracted coronavirus RNA and antibody IgG, respectively. The corresponding median amplitude sensitivities are 135 RIU\n                    <jats:sup>-1<\/jats:sup>\n                    , 196 RIU\n                    <jats:sup>-1<\/jats:sup>\n                    and 140 RIU\n                    <jats:sup>-1<\/jats:sup>\n                    , respectively. The maximum sensor resolution and figure of merit are found 2.53\u2009\u00d7\u200910\n                    <jats:sup>\u22125<\/jats:sup>\n                    RIU and 101 RIU\n                    <jats:sup>-1<\/jats:sup>\n                    , respectively for viral RNA detection. Also, a significant limit of detection (LOD) of 6.42\u2009\u00d7\u200910\n                    <jats:sup>\u22129<\/jats:sup>\n                    RIU\n                    <jats:sup>2<\/jats:sup>\n                    \/nm is obtained. Considering modern bioassays, the proposed compact photonic sensor will be well-suited for rapid point-of-care COVID testing.\n                  <\/jats:p>","DOI":"10.1364\/oe.469937","type":"journal-article","created":{"date-parts":[[2022,10,7]],"date-time":"2022-10-07T11:00:40Z","timestamp":1665140440000},"page":"40277","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Plasmonic photonic biosensor: in situ detection and quantification of SARS-CoV-2 particles"],"prefix":"10.1364","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3270-9837","authenticated-orcid":true,"given":"Abrar","family":"Islam","sequence":"first","affiliation":[{"name":"Bangabandhu Sheikh Mujibur Rahman Science & Technology University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1000-2344","authenticated-orcid":true,"given":"Firoz","family":"Haider","sequence":"additional","affiliation":[{"name":"Multimedia University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6310-0082","authenticated-orcid":true,"given":"Rifat","family":"Ahmmed Aoni","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04ttjf776","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9184-2400","authenticated-orcid":true,"given":"Rajib","family":"Ahmed","sequence":"additional","affiliation":[{"name":"Stanford University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2022,10,17]]},"reference":[{"key":"oe-30-22-40277-R2","doi-asserted-by":"publisher","first-page":"71","DOI":"10.1016\/j.ijsu.2020.02.034","volume":"76","author":"Sohrabi","year":"2020","journal-title":"Int. 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