Invited and regular paperDevelopment of a LED-based phase fluorimetric oxygen sensor using evanescent wave excitation of a sol-gel immobilized dye
References (11)
- et al.
Fibre-optic oxygen sensor with the fluorescence decay time as the information carrier
Anal. Chim. Acta
(1988) - et al.
Fibre optic oxygen sensor based on fluorescence quenching of evanescent-wave excited ruthenium complexes in sol-gel derived porous coatings
Analyst
(1993) - et al.
Fiber-optic fluoresensor for oxygen and carbon dioxide
Anal. Chem.
(1988) - et al.
Determination of oxygen concentrations by luminescence quenching of a polymer-immobilized transition-metal complex
Anal. Chem.
(1987) - et al.
LED-based fibre optic oxygen sensor using sol-gel coating
Electron. Lett.
(1994)
Cited by (79)
Development of novel handheld optical fiber dissolved oxygen sensor and its applications
2022, Analytica Chimica ActaCitation Excerpt :Therefore, optical DO sensors based on lifetime measurement is more attractive because this parameter is an intrinsic property and independent of fluctuations in the excitation light source, changes in optical system, sensitivity of the photodetector, and photobleaching [17–19]. Nevertheless, direct lifetime measurement requires expensive high-speed electronics, fast pulsed optical sources, exact synchronization of all components, and complex data processing [20–22]. These obstacles make it difficult to employ lifetime-based DO sensor for on-site detection of DO in field.
Fiber optic sensor designs and luminescence-based methods for the detection of oxygen and pH measurement
2021, Measurement: Journal of the International Measurement ConfederationOptical fiber oxygen sensor utilizing a robust phase demodulator
2017, Measurement: Journal of the International Measurement ConfederationA new optical sensor for sensing oxygen based on phase shift detection
2016, Sensors and Actuators, B: ChemicalCitation Excerpt :Further, although the total phase shift is only 26° over the entire oxygen concentration range, the phase shift and performance are comparable to those of other sensors (see Table 1). Phase resolution based on lock-in amplifiers requires high-speed optoelectronic modulation hardware and a signal processing unit with wide bandwidth [26,31,33,34]. Although a sinusoidally modulated powered LED has been used [26,27,31–37], the signal processing unit of these devices needs to be improved.
The effects of different sterilization procedures on the optical polymer oxygen sensors
2013, Sensors and Actuators, B: ChemicalCitation Excerpt :The supporting polymer matrix for the indicator should comprise high permeability for oxygen, adequate mechanical and chemical stability and high solubility for the indicator. The polymers commonly used for optical oxygen sensors are various polystyrenes [12,13,25], cellulosic materials [11,23,24], polysulfones [20,21], siloxanes [10,22], hydrogels [19], sol–gel matrices [14,15,26–29], etc. Numerous fields in which optical oxygen sensors are applied require sterile environment and consequently sterile sensors.
An open and low-cost optical-fiber measurement system for the optical detection of oxygen using a multifrequency phase-resolved method
2013, Sensors and Actuators, B: ChemicalCitation Excerpt :Optical sensing, based on the quenching of luminescence emitted by a luminophore sensitive to a given analyte, has become increasingly popular over the last two decades, and currently is a widely used approach for the fabrication of optical sensors [24–26]. Optical methods for the determination of dissolved or gaseous oxygen are mainly based on this principle [20], and a variety schemes based on the measurement of the emission intensity or luminescence lifetime have been reported in the literature in recent years [8,17–19,27–30]. However, while intensity measurements are relatively simple and accurate in the laboratory [31–34], they are often inadequate in real-world applications due to their dependence on the intensity of the exciting light, detector drift, degradation or leaching of the dye, light losses in the optical path, orientation and location of the sensor, concentration of the luminophore, or optical surface quality.