{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T01:41:39Z","timestamp":1783129299064,"version":"3.54.6"},"reference-count":29,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2024,2,15]],"date-time":"2024-02-15T00:00:00Z","timestamp":1707955200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"UK Royal Society Newton Advanced Fellowship programme","award":["NAF\/R1\/191072"],"award-info":[{"award-number":["NAF\/R1\/191072"]}]},{"name":"UK Royal Society Newton Advanced Fellowship programme","award":["872049"],"award-info":[{"award-number":["872049"]}]},{"name":"European Union Horizon 2020 Research and Innovation Staff Exchange (RISE) programme","award":["NAF\/R1\/191072"],"award-info":[{"award-number":["NAF\/R1\/191072"]}]},{"name":"European Union Horizon 2020 Research and Innovation Staff Exchange (RISE) programme","award":["872049"],"award-info":[{"award-number":["872049"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this article, we demonstrate an improved efficient fibre sensor with a high sensitivity to measure glucose concentrations in the physiological range of human beings, operating in a broad spectral bandwidth from the near- to mid-infrared. The sensor consists of a dual-peak long period grating (DPLPG) with a period of 150 \u03bcm inscribed in an optical fibre with a diameter of 80 \u03bcm. The investigation of sensing for refractive index results in a sensitivity of ~\u2212885.7 nm\/refractive index unit (RIU) and ~2008.6 nm\/RIU in the range of 1.30\u20131.44. The glucose measurement is achieved by the immobilisation of a layer of enzyme of glucose oxidase (GOD) onto the fibre surface for the selective enhancement of sensitivity for glucose. The sensor can measure glucose concentrations with a maximum sensitivity of \u221236.25 nm\/(mg\/mL) in the range of 0.1\u20133.0 mg\/mL. To the best of our knowledge, this is the highest sensitivity ever achieved for a measurement of glucose with a long period grating-based sensor, indicating its potential for many applications including pharmaceutical, biomedical and food industries.<\/jats:p>","DOI":"10.3390\/s24041247","type":"journal-article","created":{"date-parts":[[2024,2,15]],"date-time":"2024-02-15T08:29:37Z","timestamp":1707985777000},"page":"1247","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A Novel Biosensor for the Detection of Glucose Concentration Using the Dual-Peak Long Period Grating in the Near- to Mid-Infrared"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2612-3653","authenticated-orcid":false,"given":"Namita","family":"Sahoo","sequence":"first","affiliation":[{"name":"Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bing","family":"Sun","sequence":"additional","affiliation":[{"name":"College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yidong","family":"Tan","sequence":"additional","affiliation":[{"name":"Department of Precision Instrument, Tsinghua University, Beijing 100084, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kaiming","family":"Zhou","sequence":"additional","affiliation":[{"name":"Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Cano Perez, J.L., Guti\u00e9rrez-Guti\u00e9rrez, J., Perezcampos Mayoral, C., P\u00e9rez-Campos, E.L., Pina Canseco, M.D., Tepech Carrillo, L., Mayoral, L.P., Vargas Trevi\u00f1o, M., Apreza, E.L., and Rojas Laguna, R. 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