{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,25]],"date-time":"2026-01-25T05:18:36Z","timestamp":1769318316809,"version":"3.49.0"},"reference-count":38,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2021,1,22]],"date-time":"2021-01-22T00:00:00Z","timestamp":1611273600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61774175, 61674146, 61634006, 61875140"],"award-info":[{"award-number":["61774175, 61674146, 61634006, 61875140"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Key R&amp;D Plan","award":["2017YFB0405400"],"award-info":[{"award-number":["2017YFB0405400"]}]},{"name":"Key Program of Natural Science Foundation of Beijing","award":["4181001"],"award-info":[{"award-number":["4181001"]}]},{"name":"Opened Fund of the State Key Laboratory of Integrated Optoelectronics","award":["IOSKL2017KF12"],"award-info":[{"award-number":["IOSKL2017KF12"]}]},{"name":"Young and Middle-aged Talents Program of the State Ethnic Affairs Commission","award":["2018"],"award-info":[{"award-number":["2018"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>To achieve high sensitivity and multi-mode sensing characteristics based on the plasmon effect, we explored a high-sensitivity refractive index sensor structure with narrow linewidth and high absorption characteristics based on theoretical analysis. The sensor structure is composed of periodic asymmetric ring cavity array, spacer layer and metal thin-film layer. The reflection spectrum of this structure shows six resonance modes in the wavelength range from visible to near-infrared. The sensor performance was optimized based on the change of the sensor structure parameters combining the simulation data, and the results shown that this kind of asymmetric laminated structure sensor has good sensing performance. In theory, it can be combined with microfluidic technology to achieve sensing detection of diverse test samples, multi-mode and multi-component, which has great potential in the field of biosensing.<\/jats:p>","DOI":"10.3390\/s21030752","type":"journal-article","created":{"date-parts":[[2021,1,22]],"date-time":"2021-01-22T11:13:53Z","timestamp":1611314033000},"page":"752","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A Potential Plasmonic Biosensor Based Asymmetric Metal Ring Cavity with Extremely Narrow Linewidth and High Sensitivity"],"prefix":"10.3390","volume":"21","author":[{"given":"Tianping","family":"Xu","sequence":"first","affiliation":[{"name":"College of Science, Minzu University of China, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0917-0391","authenticated-orcid":false,"given":"Zhaoxin","family":"Geng","sequence":"additional","affiliation":[{"name":"School of Information Engineering, Minzu University of China, Beijing 100081, China"},{"name":"State Key Laboratory for Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yue","family":"Su","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Di, L., Yang, H., Xian, T., and Chen, X. 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