T. Eftimov, I. Kostova, S. Fouzar, D. Brabant, Kristian Nikolov, Veselin Vladev
{"title":"Smartphone-Readable Optical-Fiber Quasi-Distributed Phosphorescent Temperature Sensor","authors":"T. Eftimov, I. Kostova, S. Fouzar, D. Brabant, Kristian Nikolov, Veselin Vladev","doi":"10.3390/photonics11080694","DOIUrl":null,"url":null,"abstract":"In this paper we present the principle of operation, fabrication and performance of a phosphorescent optical-fiber quasi-distributed sensor with contactless smartphone interrogation. An array of short strong corrugated long-period gratings (C-LPG) is used as a platform to spatially locate and to excite the phosphors whose time responses are temperature-dependent. The C-LPG array was fabricated using a pulsed CO2 laser. The quasi-distributed sensing array is excited by a UV LED and the normalized differential rise/decay time response measured by a smartphone is used as a measure of the temperature. The sensing spots have a volume smaller than 0.5 μL, can be separated by several millimeters to several meters and the interrogation can be simultaneous or in a sequence. The response and the sensitivity to temperature have been measured. The sensing array has been shown to measure abrupt and gradual temperature changes in space as well as time-dependent processes in the 0 °C to 100 °C range and with a measurement time of 1 s.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":"43 16","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Bio Materials","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.3390/photonics11080694","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, BIOMATERIALS","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper we present the principle of operation, fabrication and performance of a phosphorescent optical-fiber quasi-distributed sensor with contactless smartphone interrogation. An array of short strong corrugated long-period gratings (C-LPG) is used as a platform to spatially locate and to excite the phosphors whose time responses are temperature-dependent. The C-LPG array was fabricated using a pulsed CO2 laser. The quasi-distributed sensing array is excited by a UV LED and the normalized differential rise/decay time response measured by a smartphone is used as a measure of the temperature. The sensing spots have a volume smaller than 0.5 μL, can be separated by several millimeters to several meters and the interrogation can be simultaneous or in a sequence. The response and the sensitivity to temperature have been measured. The sensing array has been shown to measure abrupt and gradual temperature changes in space as well as time-dependent processes in the 0 °C to 100 °C range and with a measurement time of 1 s.
在本文中,我们介绍了具有非接触式智能手机询问功能的磷光光纤准分布式传感器的工作原理、制造和性能。短强波纹长周期光栅(C-LPG)阵列被用作空间定位和激发磷光体的平台,磷光体的时间响应与温度有关。C-LPG 阵列是用脉冲 CO2 激光器制作的。准分布式传感阵列由紫外 LED 激发,智能手机测量的归一化差分上升/衰减时间响应可用作温度测量。传感点的体积小于 0.5 μL,间距从几毫米到几米不等,可同时或依次进行检测。对温度的响应和灵敏度进行了测量。结果表明,该传感阵列可以测量空间温度的突变和渐变,以及 0 °C 至 100 °C 范围内的随时间变化的过程,测量时间为 1 秒。
期刊介绍:
ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.