Fabry-Perot liquid refractive index sensor based on polymethyl methacrylate

Fu, Yujie; Ji, Lanting; Yang, Shuqing; Bai, Xin; Wu, Chi

doi:10.1117/12.2625951

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…On the other hand, FPIOFS in open configuration involves injecting the test medium into the cavity, and the refractive index is determined by measuring the resonance wavelength shift. [26] To enhance the sensitivity of sensors, the sensing layer material is often combined with metals such as Au, Ag, and Cu to create materials exhibiting surface plasmon resonance (SPR). [27][28][29][30] Among them, Ag coatings exhibit high reflectivity in infrared light, [31,32] making them advantageous for Hg detection, biological sensing, and chemical sensing.…”

Section: Introductionmentioning

confidence: 99%

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Wen,

Hsu

2023

Advanced Sensor Research

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In this study, a highly sensitive optical probe is designed, fabricated, and evaluated that is composed of a microfluidic device integrated with a fiber optic sensor for environmental monitoring. The resonant cavity is coated with a metal ion‐responsive molecularly imprinted nanocomposite film and monitored by a single‐mode fiber (SMF) optic sensor. The resulting Fabry–Pérot cavity‐based optical probe can accurately measure Hg levels in water with high sensitivity and stability. The nanocomposite film is synthesized using a one‐pot reaction process involving sodium alginate (SA)‐reduced nanosilver particles (nanoAg) dispersed in polyvinyl alcohol (VA). When an aqueous solution containing mercury is injected into the microfluidic device, interactions between Ag and Hg at the nanoscale form a solid Ag‐Hg solid amalgam in the resonant cavity, and surface plasmon resonance (SPR) and the Fabry–Pérot effect can be exploited to detect the presence of Hg. The synthesis, fabrication, and measurement system of this integrated device is simple and cost effective. The developed sensing heavy metals in wastewater treatment, catalysis enhancement, and nanoscale toxicity assessment, and contributes practically to achieving the sustainable development goal (SDG) of access to safe drinking water.

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Section: Introductionmentioning

confidence: 99%

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Wen,

Hsu

2023

Advanced Sensor Research

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Methods for improving imaging quality of a small-distance high-speed rotational reflection tracking system

Liu,

Wu,

Feng

et al. 2024

Appl. Opt.

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The imaging quality of a rotational reflection high-speed tracking system is greatly affected by the optical characteristics of the reflector and the depth of field limitations of the imaging system, especially for tracking systems working in small distances. In order to improve the imaging quality, this paper focused on two factors that affect the imaging quality: double vision caused by the optical characteristics of reflectors and blurring caused by the depth of field of imaging systems. This paper quantified the impact of these two factors on imaging through theoretical analysis, proposed a method of changing the hardware position, and conducted a simulation and experiments. The results show that the proposed solution in this paper can effectively improve the imaging quality of the system. The content studied in this paper has certain significance in the field of high-speed tracking of rotating reflectors and can provide reference for relevant researchers.

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Fabry-Perot liquid refractive index sensor based on polymethyl methacrylate

Cited by 2 publications

References 7 publications

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

The Nanosilver Imprinted Cross‐Channel Film used in Microfluidic Chips Based on Microcavity Resonator for Mercury Assessment

Methods for improving imaging quality of a small-distance high-speed rotational reflection tracking system

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