Optimized PCF architectures for THz detection of aquatic pathogens: Enhancing water quality monitoring

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(1), P. e0317533 - e0317533

Published: Jan. 27, 2025

Waterborne bacteria pose a serious hazard to human health, hence precise detection method is required identify them. A photonic crystal fiber sensor that takes into account the dangers of aquatic has been suggested, and its optical characteristics in THz range have quantitatively assessed. The PCF was designed examined as computed Comsol Multiphysics, program which uses “Finite Element Method” (FEM). At 3.2 operating frequency, proposed performs better than others all tested cases, with high sensitivity 96.78% for Vibrio cholera , 97.54% E. coli 97.40% Bacillus anthracis. It also very low CL 2.095 × 10 −13 dB/cm 4.411 −11 1.355 anthracis . existing architecture potential produce efficiently scalable, opening door commercial applications. innovation optimization structural parameters increase fiber’s bacterial presence, thereby improving interaction between terahertz waves cells. targets macromolecule absorption peaks sensitivity. Localized field augmentation, concentrates vibrations where interact more, may arise from optimization. By scattering, alterations can help by their characteristic scattering patterns. These improvements improve sensor’s trace detection. factors germ when combined. In aqueous environments, this results more efficient detection, could facilitate real-time monitoring contamination. Public health water quality control be significantly affected these developments.

Language: Английский

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Design and Simulation of a D-Shaped Plasmonic Biosensor Utilizing Dual-Core Photonic Crystal Fiber

Plasmonics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

Language: Английский

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Design and Analysis of Surface Plasmon Resonance-Based Refractive Index Biosensor for Detection of Colorectal Cancer with Machine Learning Approach

Plasmonics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Language: Английский

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Highly sensitive cancer detection using an open D-channel PCF-based SPR biosensor

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 24, 2025

Surface plasmon resonance (SPR) is a technique utilized for the label-free detection of cancer cells. In this analysis, we introduce photonic crystal fiber (PCF) designed with an open D-channel, featuring layer gold (Au) and titanium dioxide (TiO2) as plasmonic material. This effectively reduces gap between core layer, resulting in improved performance. Additionally, incorporating TiO2 silica substrate enhances their adhesion contributes to more robust structure. We conducted comprehensive numerical analysis suggested biosensor utilizing finite element method (FEM) integrated perfectly matched layers (PML) within COMSOL Multiphysics simulation tool. The design sensor specifically intended molecules refractive index (RI) varying from 1.25 1.43, achieving impressive peak spectral sensitivity 47,000 nm/RIU. For purpose, investigated RI values 1.36 1.401 concerning six different cell types. highest 5214.285 nm/RIU, while amplitude -1481.1 RIU− 1, which has been recorded MCF-7 HeLa proposed shows sensitivity, signal-to-noise ratio (SNR), full width at half maximum (FWHM), figure merit (FOM), limit (DL) compared existing biosensors, highlighting its potential biosensing applications. it significant that according results, cells have resolution 1.19 × 10− 5 RIU FOM 350 1.

Language: Английский

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Advancements in Surface Plasmon Resonance Biosensors: A Comprehensive Review of Technologies, Applications, and Future Prospects

Biotechnology Notes, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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