Investigation on fabrication and VOC sensing properties of PDMS fiber based optical sensor

Article Chemistry, Analytical

Optical fiber hydrogen sensor based on self-assembled PDMS/Pd-WO3 microbottle resonator

Ya-nan Zhang et al.

Summary: In this paper, a new optical fiber hydrogen sensor based on a self-assembled microbottle resonator was proposed. The sensor was fabricated by coating a single-mode fiber with sensitive materials and forming a microbottle resonator with a tapered fiber. When exposed to hydrogen, the sensor's wavelength shifted due to the changes in the sensitive materials. The experimental results showed high sensitivity and resistance to external humidity and temperature disturbances.

SENSORS AND ACTUATORS B-CHEMICAL (2023)

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Article Engineering, Electrical & Electronic

Metal oxide thin films coated evanescent wave based fiber optic VOC sensor

A. Prasanth et al.

Summary: This paper presents an experimental analysis of a fiber optic sensor for volatile organic compounds (VOC) based on evanescent wave and clad modification technique. Different metal oxide thin films were deposited on the optical fiber and characterized using various testing methods. The results show that the SnO2 coated sensor probe exhibits the highest sensor response rate and wavelength shift when detecting IPA.

SENSORS AND ACTUATORS A-PHYSICAL (2022)

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Article Chemistry, Analytical

Design of aluminium oxide (Al2O3) fiber optic gas sensor based on detection of refracted light in evanescent mode from the side-polished modified clad region

S. Devendiran et al.

Summary: The newly proposed fiber optic gas sensor shows excellent gas sensitivity and selectivity, particularly towards acetone gas. Different gas concentrations exhibit distinct characteristics in terms of output light intensity in various modes. The sensor demonstrates a significantly higher sensitivity in evanescent mode compared to transmission mode.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

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Article Materials Science, Multidisciplinary

Rapid mold-free fabrication of long functional PDMS fibers

Jeong Hui Lee et al.

Summary: The study proposes a novel method for fabricating PDMS fibers using thermal curing and stretching, without the need for molds. The resulting PDMS fibers have excellent transparency and mechanical strength, and can be functionalized for different applications.

NPG ASIA MATERIALS (2022)

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Article Chemistry, Physical

A Highly Sensitive Photonic Crystal Fiber Gas Sensor for the Detection of Sulfur Dioxide

Elizabeth Caroline Britto et al.

Summary: In this paper, a Wheel Structured circular air hole Photonic Crystal Fiber (WS-PCF) based gas sensor is proposed for detecting SO2 gas. The proposed sensor offers high relative sensitivity and low confinement loss, and it is simple and easy to implement.

SILICON (2022)

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Article Instruments & Instrumentation

Recent Advances in Spectroscopic Gas Sensing With Micro/Nano-Structured Optical Fibers

Wei Jin et al.

Summary: The use of micro- and nano-structured optical fibers allows for parts-per-million to parts-per-trillion level gas detection for various gases. Recent developments in optical fiber gas cells and detection systems have focused on direct absorption, photothermal, photoacoustic, and stimulated Raman spectroscopies.

PHOTONIC SENSORS (2021)

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Article Engineering, Electrical & Electronic