Abstract A novel mode-filtered light fiber optic pH sensor was developed by inserting an optical fiber immobilized with a pH-sensitive indicator into a fused-silica capillary. In the experiment,
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The sensor has a linear response in the pH range of 1.0–9.0. It was successfully applied to the determination of the pH values in human urine and serum samples.
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Recent advances in the application of semiconductor nanocrystals, or quantum dots, as biochemical sensors are reviewed. Quantum dots have unique optical properties that make them
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The detection capability of the sensor films was evaluated by spiking dyes in various water matrices, like household tap water and river water. The results indicate that pH-sensitive CQD thin
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In this paper, we reported a type of fiber-optic chemical pH sensors, by using carboxyl ZnCdSe/ZnS QDs to modify the surface of cone region. Under excitation at 405 nm, the green
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In this study, a hydrogel fiber optic sensor based on nitrogen-doped carbon dots (NCDs) was prepared for real-time detection of Fe3+. Green nontoxic NCDs were syn-thesized by citric acid and urea.
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Fiber optic sensors are defined as devices that utilize optical fibers to measure a variety of stimuli, including mechanical, thermal, electromagnetic, radiation, chemical, and flow characteristics. They
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Recent advances in the application of semiconductor nanocrystals, or quantum dots, as biochemical sensors are reviewed. Quantum dots have unique
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This review aims to provide valuable insights for the design and development of novel CD-integrated optical fiber platforms for sensing chemically and biologically relevant analytes.
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Carbon dots (CDs) have enormous potential in optical sensing applications due to their remarkable physicochemical properties. Benefiting from high specific surface area, rich active sites,
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Introduction With the continuous advancement of science and technology, the application of fiber optic technology in communication, medical,
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An easily fabricated Fabry-Perot optical fiber humidity sensor with high performance was presented by filling Graphene Quantum Dots (GQDs) into the Fabry-Perot resonator, which consists
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Optic fiber biosensor has many advantages such as small sample volume, high in sensitivity and resisting strong electromagnetic interference, especially entitling to a real-time and
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Fiber-optic sensors use the physical properties of light when transmitting it via fiber-optic cable with glass or plastic fibers to detect objects. They consist of a fiber-optic amplifier and fiber-optic cables
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In this work, the fiber-optic chemical pH sensors were fabricated based on carboxyl ZnCdSe/ZnS quantum dots (QDs) and tapered optical fiber. The photoluminescence (PL) intensity of
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A new recyclable fiber optic sensor with a carbon dot/cellulose acetate (CA)-sensitive membrane, in which carbon dots prepared by a hydrothermal method were embedded in the CA film
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An optical fiber sensor for Hg (II) in aqueous solution based on sol-gel immobilized carbon dots nanoparticles functionalized with PEG (200) and N-acetyl-L-cysteine is described.
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Request PDF | On Mar 1, 2024, Zongjie Zhang and others published Highly sensitive fiber-optic chemical pH sensor based on surface modification of optical fiber with ZnCdSe/ZnS quantum dots |
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Best green dot sights reviewed—for pistols and rifles. Compare top models for brightness, durability, and rapid target acquisition across carry, duty,
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In this study, a hydrogel fiber optic sensor based on nitrogen-doped carbon dots (NCDs) was prepared for real-time detection of Fe 3+. Green nontoxic NCDs were synthesized by citric acid
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In the current research, we report the development and utilization of pH-sensitive carbon quantum dots (CQDs) immobilized in polymer thin films acting as sensors for textile dye detection.
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An optical fiber sensing platform based on the nitrogen-doped carbon dots (N-CDs) for online detection of pH value in real time has been developed. The pH-sensitive N-CDs are
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In this wok we report a fiber optic sensor for the detection of ammonia at low level concentrations by means of the utilization of as colourimetric pH indicator, Bromocresol Green
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A new optical fiber sensor based on the fluorescence lifetime was prepared for specific detection of sulfate ion concentration, where 1,1′- (anthracene-9,10-diylbis (methylene))bis (3
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An easily fabricated Fabry-Perot optical fiber humidity sensor with high performance was presented by filling Graphene Quantum Dots (GQDs) into
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Fiber optic sensors are already essential in many industries due to their high sensitivity and resilience to electromagnetic interference. Future research will concentrate on increasing sensitivity and
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A fiber-optic sensor is a sensor that uses optical fiber either as the sensing element ("intrinsic sensors"), or as a means of relaying signals from a remote sensor to the electronics that process the signals
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We present here the recent advance in exploring new detection mechanisms, materials, processes, and applications of fiber optic sensors. Keywords: fiber optic sensors, detection mechanisms, materials,
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