Bio-Fabricated Gold and Silver Nanoparticle Based Plasmonic Sensors for Detection of Environmental Pollutants: An Overview

De, Anindita; Kalita, Dristie

doi:10.1080/10408347.2021.1970507

Cited by 17 publications

(3 citation statements)

References 123 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The evanescent field at the fibre surface decays to a value that is almost negligible when the fibre cladding is significantly thicker than the fibre core. The EM field interacts with the surrounding medium when an optical fibre is tapered down to less than the core diameter, allowing light to pass through the cladding (rather than the core) and increasing the amplitude of the EM field in the tapered area [ 77 , 78 , 79 ].…”

Section: Working Mechanism Of Optical Fibre-based Sensorsmentioning

confidence: 99%

“…The sensing mechanism in fibre optics involves exploiting changes in light intensity, phase, wavelength, or polarization initiated by the external factors being measured, as illustrated in Figure 2 to less than the core diameter, allowing light to pass through the cladding (rather than the core) and increasing the amplitude of the EM field in the tapered area [77][78][79].…”

Section: Working Mechanism Of Optical Fibre-based Sensorsmentioning

confidence: 99%

See 1 more Smart Citation

Optical Fibre-Based Sensors—An Assessment of Current Innovations

Khonina,

Kazanskiy,

Butt

2023

Biosensors

View full text Add to dashboard Cite

Optical fibre sensors are an essential subset of optical fibre technology, designed specifically for sensing and measuring several physical parameters. These sensors offer unique advantages over traditional sensors, making them gradually more valuable in a wide range of applications. They can detect extremely small variations in the physical parameters they are designed to measure, such as analytes in the case of biosensing. This high sensitivity allows them to detect subtle variations in temperature, pressure, strain, the refractive index of analytes, vibration, and other environmental factors with exceptional accuracy. Moreover, these sensors enable remote sensing capabilities. Since light signals are used to carry information, the sensing elements can be placed at distant or inaccessible sites and still communicate the data back to the central monitoring system without signal degradation. In recent times, different attractive configurations and approaches have been proposed to enhance the sensitivity of the optical fibre-based sensor and are briefly explained in this review. However, we believe that the choice of optical fibre sensor configuration should be designated based on the specific application. As these sensors continue to evolve and improve, they will play an increasingly vital role in critical monitoring and control applications across various industries.

show abstract

Section: Working Mechanism Of Optical Fibre-based Sensorsmentioning

confidence: 99%

Section: Working Mechanism Of Optical Fibre-based Sensorsmentioning

confidence: 99%

Optical Fibre-Based Sensors—An Assessment of Current Innovations

Khonina,

Kazanskiy,

Butt

2023

Biosensors

View full text Add to dashboard Cite

show abstract

“…For instance, detecting trace levels of dangerous gases in industrial environments can avert accidents and ensure worker safety. In environmental monitoring, these sensors can track pollutants with high accuracy, contributing to better air quality management and public health [14][15][16]. In medical diagnostics, integrated photonic sensors can be used for non-invasive breath analysis to detect biomarkers for various diseases, enabling early diagnosis and personalized treatment.…”

mentioning

confidence: 99%

Integrated Photonic Sensors for The Detection of Toxic Gases - A Review

Butt,

Piramidowicz

2024

Preprint

View full text Add to dashboard Cite

Gas sensing is crucial for detecting hazardous gases in industrial environments, ensuring safety and preventing accidents. Additionally, it plays a vital role in environmental monitoring and control, helping to mitigate pollution and protect public health. Integrated photonic gas sensors are important due to their high sensitivity, rapid response time, and compact size, enabling precise recognition of gas concentrations in real-time. These sensors leverage photonic technologies, such as waveguides and resonators, to enhance performance over traditional gas sensors. Advancements in materials and fabrication techniques could further improve their efficiency, making them invaluable for environmental monitoring, industrial safety, and healthcare diagnostics. In this review, we delved into photonic gas sensors that operate based on the principles of evanescent field absorption (EFA) and wavelength interrogation methods. These advanced sensing mechanisms allow for highly sensitive and selective gas detection, leveraging the interplay of light with gas molecules to produce precise measurements.

show abstract