{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:59:43Z","timestamp":1760144383587,"version":"build-2065373602"},"reference-count":21,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2024,4,14]],"date-time":"2024-04-14T00:00:00Z","timestamp":1713052800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science (JSPS)","doi-asserted-by":"publisher","award":["21K03915","22J13824"],"award-info":[{"award-number":["21K03915","22J13824"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Koseikai Co., Ltd. (Yamanashi, Japan)","award":["21K03915","22J13824"],"award-info":[{"award-number":["21K03915","22J13824"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this study, the fluorescence properties of Lumisis, a phosphor that can be easily applied to ultrafine wires, were evaluated. By evaluating the wavelength characteristics of Lumisis phosphor, we investigated the possibility of applying it to a dual-wavelength laser-induced fluorescence (LIF) measurement system and evaluated the accuracy of temperature measurements. The difference between the decrease in the percentage intensities of the red and green fluorescence of Lumisis phosphors showed that two-color LIF was possible. The Lumisis phosphor\u2013mixture ratio was optimized as 1:1.25, and the average measurement error of the fluorescent wire was 0.20 K, as evaluated through uncertainty analysis. Finally, the application of this measurement method to hot air jet phenomena showed that this method accurately captures the temperature changes in hot air, thus proving its validity.<\/jats:p>","DOI":"10.3390\/s24082510","type":"journal-article","created":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T08:08:12Z","timestamp":1713168492000},"page":"2510","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Improvement of Temperature Measurement Accuracy of Hot Airflow Using Ultrafine Thermo-Sensitive Fluorescent Wires of Lumisis Phosphor"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9599-9352","authenticated-orcid":false,"given":"Shumpei","family":"Funatani","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, University of Yamanashi, Yamanashi 400-8510, Japan"}]},{"given":"Yusaku","family":"Tsukamoto","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University of Yamanashi, Yamanashi 400-8510, Japan"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4743","DOI":"10.1063\/1.1606526","article-title":"Fluorescence intensity ratio technique for optical fiber point temperature sensing","volume":"94","author":"Wade","year":"2003","journal-title":"J. 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