Dissolved oxygen sensor based on the fluorescence quenching method with
				optimal modulation frequency

Er, Zhixuan; Gong, Ping; Zhou, Jialing; Wang, Yiming; Jiang, Xiaokang; Xie, Liang

doi:10.1364/ao.457805

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…where I p0 is the phosphorescence intensity without oxygen and proportional to the power of excitation source. The K SV is the sensitivity of the probe, as well as the key parameters affecting the measurement range of oxygen probes [30]. The ratio of I p0 and I p is defined as the optical parameter (OP).…”

Section: Performance Evaluation Methods Of Oxygen Probesmentioning

confidence: 99%

A wide range oxygen sensing strategy with the collaboration of multiple phosphorescence probes

Wang,

Sun,

Peng

et al. 2024

Phys. Scr.

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A wide range oxygen measurement system with the relative measurement error of less than 1.5% across 4 orders of magnitude of oxygen dynamic range has been developed. We proposed a theoretical evaluation method of the measurement capability of oxygen probes, which points that the relative measurement error (δ) is equal to the reciprocal of the product of signal-to-noise ratio (SNR) and relative sensitivity (S r). A minimum value point in the curve of δ with oxygen concentration is existing due to the opposite trends of SNR and S r Based on the evaluation results, an oxygen probe group was selected scientifically for wide range oxygen measurement. The efficacy of the developed measurement system, featuring adaptive oxygen probe switching, was verified through testing, confirming its compliance with accuracy requirements for measurements.

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Section: Performance Evaluation Methods Of Oxygen Probesmentioning

confidence: 99%

A wide range oxygen sensing strategy with the collaboration of multiple phosphorescence probes

Wang,

Sun,

Peng

et al. 2024

Phys. Scr.

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“…The measurement principle is based on the determination of the fluorescence lifetime, which is correlated with the phase difference between the excitation light and the fluorescence output. In this case, it is important to take into account the possible nonlinear effects of the fluorescent material, since in this case the accuracy of the results will depend on the modulation frequency of the excitation light [ 254 ]. Variation in the modulation frequency showed that it mainly affects the sensitivity and phase resolution ratio of the system.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

On the Use of Polymer-Based Composites for the Creation of Optical Sensors: A Review

2022

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Polymers are widely used in many areas, but often their individual properties are not sufficient for use in certain applications. One of the solutions is the creation of polymer-based composites and nanocomposites. In such materials, in order to improve their properties, nanoscale particles (at least in one dimension) are dispersed in the polymer matrix. These properties include increased mechanical strength and durability, the ability to create a developed inner surface, adjustable thermal and electrical conductivity, and many others. The materials created can have a wide range of applications, such as biomimetic materials and technologies, smart materials, renewable energy sources, packaging, etc. This article reviews the usage of composites as a matrix for the optical sensors and biosensors. It highlights several methods that have been used to enhance performance and properties by optimizing the filler. It shows the main methods of combining indicator dyes with the material of the sensor matrix. Furthermore, the role of co-fillers or a hybrid filler in a polymer composite system is discussed, revealing the great potential and prospect of such matrixes in the field of fine properties tuning for advanced applications.

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“…Fluorescence sensing is an established approach in chemical and biochemical sensing. It frequently utilizes fluorescent dyes or other suitable reagents, which react to the presence of an analyte by modulating their fluorescent decay times [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. When this very versatile approach is applied to sensor design and on-line measurements, fluorescent dyes/reagents are often immobilized, or incorporated into different thin films of other layers.…”

Section: Introductionmentioning

confidence: 99%

A Microfluidic, Flow-Through, Liquid Reagent Fluorescence Sensor Applied to Oxygen Concentration Measurement

Gril,

Donlagic

2023

Sensors

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A concept of a microfluidic fluorescent chemical sensing system is presented and demonstrated as a sensor for measurement of dissolved oxygen in water. The system utilizes on-line mixing of a fluorescent reagent with the analyzed sample, while it measures the fluorescence decay time of the mixture. The system is built entirely out of silica capillaries and optical fibers, and allows for very low consumption of the reagent (of the order of mL/month) and the analyzed sample (of the order of L/month). The proposed system can, thus, be applied to continuous on-line measurements, while utilizing a broad variety of different and proven fluorescent reagents or dyes. The proposed system allows for the use of relatively high-excitation light powers, as the flow-through concept of the system reduces the probability of the appearance of bleaching, heating, or other unwanted effects on the fluorescent dye/reagent caused significantly by the excitation light. The high amplitudes of fluorescent optical signals captured by an optical fiber allow for low-noise and high-bandwidth optical signal detection, and, consequently, the possibility for utilization of reagents with nanosecond fluorescent lifetimes.

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Dissolved oxygen sensor based on the fluorescence quenching method with optimal modulation frequency

Cited by 4 publications

References 19 publications

A wide range oxygen sensing strategy with the collaboration of multiple phosphorescence probes

A wide range oxygen sensing strategy with the collaboration of multiple phosphorescence probes

On the Use of Polymer-Based Composites for the Creation of Optical Sensors: A Review

A Microfluidic, Flow-Through, Liquid Reagent Fluorescence Sensor Applied to Oxygen Concentration Measurement

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