A miniaturized oxygen sensor integrated on fiber surface based on evanescent-wave induced fluorescence quenching

Xiong, Yan; Tan, Jun; Wang, Chengjie; Zhu, Ying; Fang, Shenwen; Wu, Jiayi; Wang, Qing; Duan, Ming

doi:10.1016/j.jlumin.2016.08.005

Cited by 18 publications

(9 citation statements)

References 39 publications

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“…In recent years, the development of optical sensors based on waveguide sensing attracted much attention due to their analytical potential and the possibility of miniaturization. Xiong coated the fiber surface with an organically modified silicate (ORMOSIL) film with immobilized [Ru(bpy) 3 ] 2+ fluorophores [139]. When light was propagated by total internal reflection (TIR) in the fiber core, evanescent waves generated by the fiber surface could stimulate the fluorescence emission of the fluorophores, thus enhancing the fluorescence quenching reaction.…”

Section: Dissolved Oxygen Detection Technologiesmentioning

confidence: 99%

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Wei

Jiao

et al. 2019

Sensors

143

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Dissolved oxygen is an important index to evaluate water quality, and its concentration is of great significance in industrial production, environmental monitoring, aquaculture, food production, and other fields. As its change is a continuous dynamic process, the dissolved oxygen concentration needs to be accurately measured in real time. In this paper, the principles, main applications, advantages, and disadvantages of iodometric titration, electrochemical detection, and optical detection, which are commonly used dissolved oxygen detection methods, are systematically analyzed and summarized. The detection mechanisms and materials of electrochemical and optical detection methods are examined and reviewed. Because external environmental factors readily cause interferences in dissolved oxygen detection, the traditional detection methods cannot adequately meet the accuracy, real-time, stability, and other measurement requirements; thus, it is urgent to use intelligent methods to make up for these deficiencies. This paper studies the application of intelligent technology in intelligent signal transfer processing, digital signal processing, and the real-time dynamic adaptive compensation and correction of dissolved oxygen sensors. The combined application of optical detection technology, new fluorescence-sensitive materials, and intelligent technology is the focus of future research on dissolved oxygen sensors.

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Section: Dissolved Oxygen Detection Technologiesmentioning

confidence: 99%

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Wei

Jiao

et al. 2019

Sensors

143

View full text Add to dashboard Cite

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“…Eqn (1)-(4) describe the basic chemical reactions involved in HF-based silica ber etching. 37,39,40 H 2 SiF 6 could easily decompose into SiF 4 and HF (eqn (5)), 40 and the hydrolysis of SiF 4 would further produce colloidal silica (orthosilicic acid, H 4 SiO 4 , eqn (6)…”

Section: Improved Etching Effect Using Hf/hno 3 Mixture Solutionsmentioning

confidence: 99%

“…Meanwhile, the ber simultaneously serves as the collector of generated uorescence, enabling the evanescent wave ber optic (EWFO) biosensors easy to miniaturization. [3][4][5][6] Therefore, the total uorescent signal depends not only on uorescence excited via the evanescent eld on the ber surface but also on the fraction of total emitted uorescence coupling back into the detectable modes inside the ber. 2 Consequently, it is critical to optimize signal coupling and to reduce unwanted noises so that the relatively weak uorescent signals can be detected.…”

Section: Introductionmentioning

confidence: 99%

Nucleic acid functionalized fiber optic probes for sensing in evanescent wave: optimization and application

et al. 2019

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“…Collisional quenching [16][17][18][19][20] between oxygen molecules and fluorescence or phosphorescence molecules in a support matrix is the basis for most optical fiber DO sensors. It has been demonstrated that optical fiber chemical sensors have superiorities over other DO sensors, such as ease of operation, cost-effectiveness, and anti-electromagnetic interference.…”

Section: Introductionmentioning

confidence: 99%

Ratiometric Optical Fiber Dissolved Oxygen Sensor Based on Fluorescence Quenching Principle

Zhao

Zhang

Jin

et al. 2022

Sensors

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In this study, a ratiometric optical fiber dissolved oxygen sensor based on dynamic quenching of fluorescence from a ruthenium complex is reported. Tris(4,7-diphenyl-1,10-phenanthrolin) ruthenium(II) dichloride complex (Ru(dpp)32+) is used as an oxygen-sensitive dye, and semiconductor nanomaterial CdSe/ZnS quantum dots (QDs) are used as a reference dye by mixing the two substances and coating it on the plastic optical fiber end to form a composite sensitive film. The linear relationship between the relative fluorescence intensity of the ruthenium complex and the oxygen concentration is described using the Stern–Volmer equation, and the ruthenium complex doping concentration in the sol-gel film is tuned. The sensor is tested in gaseous oxygen and aqueous solution. The experimental results indicate that the measurement of dissolved oxygen has a lower sensitivity in an aqueous environment than in a gaseous environment. This is due to the uneven distribution of oxygen in aqueous solution and the low solubility of oxygen in water, which results in a small contact area between the ruthenium complex and oxygen in solution, leading to a less-severe fluorescence quenching effect than that in gaseous oxygen. In detecting dissolved oxygen, the sensor has a good linear Stern–Volmer calibration plot from 0 to 18.25 mg/L, the linearity can reach 99.62%, and the sensitivity can reach 0.0310/[O2] unit. The salinity stability, repeatability, and temperature characteristics of the sensor are characterized. The dissolved oxygen sensor investigated in this research could be used in various marine monitoring and environmental protection applications.

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A miniaturized oxygen sensor integrated on fiber surface based on evanescent-wave induced fluorescence quenching

Cited by 18 publications

References 39 publications

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Nucleic acid functionalized fiber optic probes for sensing in evanescent wave: optimization and application

Ratiometric Optical Fiber Dissolved Oxygen Sensor Based on Fluorescence Quenching Principle

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