{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T09:29:39Z","timestamp":1768987779584,"version":"3.49.0"},"reference-count":51,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2023,6,12]],"date-time":"2023-06-12T00:00:00Z","timestamp":1686528000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, we study the sensitivity-tunable terahertz (THz) liquid\/gas biosensor in a coupling prism\u2013three-dimensional Dirac semimetal (3D DSM) multilayer structure. The high sensitivity of the biosensor originates from the sharp reflected peak caused by surface plasmon resonance (SPR) mode. This structure achieves the tunability of sensitivity due to the fact that the reflectance could be modulated by the Fermi energy of 3D DSM. Besides, it is found that the sensitivity curve depends heavily on the structural parameters of 3D DSM. After parameter optimization, we obtained sensitivity over 100\u00b0\/RIU for liquid biosensor. We believe this simple structure provides a reference idea for realizing high sensitivity and a tunable biosensor device.<\/jats:p>","DOI":"10.3390\/s23125520","type":"journal-article","created":{"date-parts":[[2023,6,13]],"date-time":"2023-06-13T02:00:45Z","timestamp":1686621645000},"page":"5520","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Sensitivity-Tunable Terahertz Liquid\/Gas Biosensor Based on Surface Plasmon Resonance with Dirac Semimetal"],"prefix":"10.3390","volume":"23","author":[{"given":"Mengjiao","family":"Ren","sequence":"first","affiliation":[{"name":"School of Physics and Electronics, Hunan Normal University, Changsha 410081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chengpeng","family":"Ji","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan Normal University, Changsha 410081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xueyan","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan Normal University, Changsha 410081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haishan","family":"Tian","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan Normal University, Changsha 410081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leyong","family":"Jiang","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan Normal University, Changsha 410081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoyu","family":"Dai","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan University, Changsha 410082, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xinghua","family":"Wu","sequence":"additional","affiliation":[{"name":"Key Laboratory for Microstructural Functional Materials of Jiangxi Province, College of Science, Jiujiang University, Jiujiang 332005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuanjiang","family":"Xiang","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan University, Changsha 410082, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"494","DOI":"10.1016\/j.bios.2015.01.040","article-title":"Graphene oxide-based optical biosensor functionalized with peptides for explosive detection","volume":"68","author":"Zhang","year":"2015","journal-title":"Biosens. 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