The influence of particulates on sapphire fiber evanescent wave absorption by water has been studied. Suspensions containing micro-sized graphite flakes and glassy carbon powder were used. Conventional free-space transmittance measurements of these samples showed strong absorption and scattering, which severely screened the absorption by water. However, the absorption on the water band determined from the evanescent wave interaction was unaffected by the presence of the graphite flakes. These results indicate that fiber-optic evanescent wave chemical sensors may be suitable for process control applications involving turbid reactor streams.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1366/000370209788964485 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
TiC MXene/GNRs for synergistically highly enhanced sensitivity of optical fiber SPR acetylcholine biosensors via an electrostatic layer-by-layer assembly method.
Biosens Bioelectron
January 2025
Innovation Center of Functional Genomics and Molecular Diagnostics Technology of Gansu Province, Lanzhou, China.
Improving the sensitivity of biosensor has always the major challenge to measure lower detection concentration of biological samples. In this paper, a novel optical fiber surface plasmon resonance (SPR) biosensor based on TiC MXene/GNRs synergistically highly enhanced sensitivity was proposed. The TiC MXene and GNRs were coated on the optical fiber sensing probe by the electrostatic layer-by-layer (ELBL) assembly method.
View Article and Find Full Text PDFTracking solid electrolyte interphase dynamics using operando fibre-optic infra-red spectroscopy and multivariate curve regression.
Nat Commun
January 2025
Chimie du Solide et de l'Énergie, UMR 8260, Collège de France, Paris, France.
As batteries drive the transition to electrified transportation and energy systems, ensuring their quality, reliability, lifetime, and safety is crucial. While the solid electrolyte interphase (SEI) is known to govern these performance characteristics, its dynamic nature makes understanding its nucleation, growth, and composition an ambitious, yet elusive aspiration. This work employs chalcogenide fibres embedded in negative electrode materials for operando Infra-red Fibre-optic Evanescent Wave Spectroscopy (IR-FEWS), combined with Multivariate Curve Resolution by Alternating Least Squares (MCR-ALS) algorithms for spectra analysis.
View Article and Find Full Text PDFDiagnostic and prognostic perspectives of fabry disease via fiber evanescent wave spectroscopy advanced by machine learning.
Biosens Bioelectron
January 2025
Institute of Physics, College of Natural Sciences, University of Rzeszow, Rzeszow, Poland.
Fabry disease (FD) is a rare disorder resulting from a genetic mutation characterized by the accumulation of sphingolipids in various cells throughout the human body, leading to progressive and irreversible organ damage, particularly in males. Genetically-determined deficiency or reduced activity of the enzyme (alpha - Galactosidase; α-Gal) leads to the accumulation of sphingolipids in the lysosomes of various cell types, including the heart, kidneys, skin, eyes, central nervous system, and digestive system, triggering damage, leading to the failure of vital organs, and resulting in progressive disability and premature death. FD diagnostics currently depend on costly and time-intensive genetic tests and enzymatic analysis, often leading to delayed or inaccurate diagnoses, which contribute to rapid disease progression.
View Article and Find Full Text PDFWe demonstrate the heterogeneous integration of GaInAsSb-GaSb photodiodes on 220 nm SOI photonic integrated circuits (PICs) using the micro-transfer-printing (μTP) technology, for operation in the short-wave infrared (SWIR) wavelength region. Utilizing an evanescent coupling scheme between a silicon waveguide and a III-V structure, the device exhibits a room temperature responsivity of 1.23 and 1.
View Article and Find Full Text PDFThe intermediate phase produced by the complexation of metal ions and solvent molecules usually occurs in the crystallization process of perovskite single crystal or film. Effective monitoring of intermediate-phase evolution is beneficial to the control of crystal quality. However, it is difficult to realize.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!