{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T17:36:57Z","timestamp":1791653817279,"version":"4.3.4"},"reference-count":43,"publisher":"Optica Publishing Group","issue":"13","license":[{"start":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T00:00:00Z","timestamp":1782345600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR-OA"},{"start":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T00:00:00Z","timestamp":1782345600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100004735","name":"Natural Science Foundation of Hunan Province","doi-asserted-by":"crossref","award":["2026JJ50502"],"award-info":[{"award-number":["2026JJ50502"]}],"id":[{"id":"10.13039\/501100004735","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Open Fund Project of State Key Laboratory of Precision Measurement Technology and Instruments","award":["2024PMTI04"],"award-info":[{"award-number":["2024PMTI04"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Express"],"published-print":{"date-parts":[[2026,6,29]]},"abstract":"<jats:p>\n                    Optical Tamm state (OTS) sensors are of considerable interest for biosensing applications, benefiting from strong localized field confinement and the experimental convenience of normal-incidence excitation geometry. Conventional multilayer devices based on forward design usually require exhaustive parameter scanning, making optimization inefficient in high-dimensional spaces. We present an OTS refractive-index sensor utilizing a BaCO\n                    <jats:sub>3<\/jats:sub>\n                    \/TiN\/analyte\/(SiO\n                    <jats:sub>2<\/jats:sub>\n                    \/TiO\n                    <jats:sub>2<\/jats:sub>\n                    ) composite structure, whose geometric parameters are globally optimized via a particle swarm optimization (PSO) algorithm. Numerical calculations show that the optimized device achieves a sensitivity of 590.4\u2005nm\/RIU and a figure of merit (FOM) of 47.3 RIU\n                    <jats:sup>\u22121<\/jats:sup>\n                    . The results show that the structures improve OTS sensing performance and are promising for inverse design applications.\n                  <\/jats:p>","DOI":"10.1364\/oe.605154","type":"journal-article","created":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T13:00:09Z","timestamp":1781874009000},"page":"24844","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Inverse-designed BaCO\n                    <sub>3<\/sub>\n                    \/TiN optical Tamm state sensors with enhanced refractive index sensitivity"],"prefix":"10.1364","volume":"34","author":[{"given":"Yongkang","family":"Zhan","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/053w1zy07","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liang","family":"Wang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/053w1zy07","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-2131-4367","authenticated-orcid":true,"given":"Miao","family":"Peng","sequence":"additional","affiliation":[{"name":"Central South University of Forestry and Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0256-8914","authenticated-orcid":true,"given":"Zhiwei","family":"Zheng","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/053w1zy07","id-type":"ROR","asserted-by":"publisher"}]},{"name":"College of Hunan Province"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,6,25]]},"reference":[{"key":"oe-34-13-24844-R1","doi-asserted-by":"publisher","first-page":"1801433","DOI":"10.1002\/adom.201801433","type":"journal-article","volume":"7","author":"Xu","year":"2019","journal-title":"Adv. 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