An optical fiber pH sensor based on a long-period fiber grating (LPFG) is reported. Two oppositely charged polymers,
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Optical fiber structure & characteristics At the heart of this technology is the optical fiber itself -- a hair-thin cylindrical filament made
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The chemical parameter most investigated with optical fibers is doubtless pH. The first pH optical fiber sensor was
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In this article, we report the analysis of a novel optical fiber pH sensor based in polyaniline (PAni) coating applied on a
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Results: The sensor showed repeatability within a pH range of 3 to 11 based on conventional potentiometric pH measurements. A
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Herein, we have developed hydrogel-based optical fiber (OF) sensors for continuous and real-time pH sensing using a
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This is the first comprehensive review on methods and materials for use in optical sensing of pH values and on
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Download scientific diagram | The specific structure of optical fiber pH sensor and its experimental design.
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But, these conventional methods have many disadvantages like selective range of pH value, low sensitivity, bulk in size
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A simple optical fiber structure with a section of no-core fiber for measuring pH is presented. Precursor TEOS and pH
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The development, design, and evaluation of an intrinsic optical fiber pH sensor for low pH values (in the range of 0.5
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This review categorizes optical fiber pH sensors into six primary types—fluorescence-based, absorbance-based,
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This study presents the development and characterisation of an optical fibre coated with silver nanoparticles and silica
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The indicator is usually an organic dye able to change its color over a given pH range (typically 3-4 pH units centered at the pKa of a
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An optical pH sensor basically comprises two essential parts: A pH sensitive sensor layer and a read-out device (pH meter). The pH
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This article provides a brief review on the development and applications of optical and fiber-optic pH sensors in the
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The fiber optic sensor is based on a Mach-Zehnder interferometric technique, where the pH sensitive material is
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An optical fiber pH sensor based on a multimode interference structure is presented. The sensitive element is a piece of no-core fiber
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Abstract: A fiber-optic pH sensor, based on layer-by-layer (LBL) self-assembly and surface plasmon resonance (SPR)
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This work proposes a reflective SCF optical fiber pH sensing structure based on Michelson interference and AIEgens, which exhibits
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Optical fiber sensors present several advantages in relation to other types of sensors. These advantages are
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Over the past two decades, the development and applications of chemical sensors and biosensors have grown rapidly
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A fiber optic pH sensor has been fabricated using nile blue entrapped in an ammonia catalyzed silica sol-gel film coated
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The excitation and emission light is transmitted via an optical fiber between the sensor indicator and the pH meter. The optical pH
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Abstract A pH sensor based on polymethylmethacrylate (PMMA) optical fibers has been developed for on-body
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In this work, an online pH optical fiber sensor is proposed for accurate, rapid and sensitive detection of pH value. The
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