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In this research, we develop an ammonia gas sensor using plastic optical fibers. These chemically etched optical fibers were layered with a thin film of carbon nanotubes to enhance the sensing capability of the developed sensor. The sensor was then interrogated with different ratios of gaseous ammonia to synthetic air using a controlled gas testing setup. The developed sensor exhibited high sensitivity...
This paper reports an optical sensor using plastic optical fiber for the detection of hydrogen gas. A thin layer of palladium is used as the sensing layer to enhance the performance of the optical fiber sensor. When interrogated with a broadband white light source and a spectrometer, significant changes were observed in the intensity spectrum and dynamic response of the sensor as the concentration...
In this paper, a side polished multimode plastic optical fiber gas sensor coated with graphene/polyaniline nanocomposite is developed for ammonia gas sensing application. Graphene/polyaniline nanocomposite is deposited onto side polished plastic optical fiber by drop-casting method. The proposed sensor is exposed to different concentration of ammonia varies from 1% to 0.25 % at room temperature. Absorbance...
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