{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T09:12:32Z","timestamp":1761988352057,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2011,2,1]],"date-time":"2011-02-01T00:00:00Z","timestamp":1296518400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A novel fiber-optic probe based on reflection-based localized surface plasmon resonance (LSPR) was developed to quantify the concentration of hydrofluoric acid (HF) in aqueous solutions. The LSPR sensor was constructed with a gold nanoparticle-modified PMMA fiber, integrated with a SiO2 sol-gel coating. This fiber-sensor was utilized to assess the relationship between HF concentration and SiO2 sol-gel layer etching reduction. The results demonstrated the LSPR sensor was capable of detecting HF-related erosion of hydrofluoric acid solutions of concentrations ranging from 1% to 5% using Relative RI Change Rates. The development of the LSPR sensor constitutes the basis of a detector with significant sensitivity for practical use in monitoring HF solution concentrations.<\/jats:p>","DOI":"10.3390\/s110201907","type":"journal-article","created":{"date-parts":[[2011,2,1]],"date-time":"2011-02-01T11:24:19Z","timestamp":1296559459000},"page":"1907-1923","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Detection of Hydrofluoric Acid by a SiO2 Sol-Gel Coating Fiber-Optic Probe Based on Reflection-Based Localized Surface Plasmon Resonance"],"prefix":"10.3390","volume":"11","author":[{"given":"I-Cherng","family":"Chen","sequence":"first","affiliation":[{"name":"Micro Systems Technology Center, ITRI South, Industrial Technology Research Institute, Tainan 709, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shiu-Shiung","family":"Lin","sequence":"additional","affiliation":[{"name":"College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsao-Jen","family":"Lin","sequence":"additional","affiliation":[{"name":"Chemical Engineering Department, National Chung-Cheng University, Chia-Yi, 621, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Je-Kang","family":"Du","sequence":"additional","affiliation":[{"name":"College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2011,2,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Becker, D.S., Schmidt, W.R., Peterson, C.A., and Burkman, D.C. 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