کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7144756 | 1462064 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multipoint chemical vapor measurement by zeolite thin film-coated Fresnel reflection-based fiber sensors with an Array-Waveguide Grating
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A simple multipoint volatile organic compounds (VOC) measurement by zeolite thin film-coated Fresnel reflection-based fiber sensor with an Array-Waveguide Grating (AWG) is proposed and demonstrated. The sensor comprise a polycrystalline silicalite thin film grown up on the cleaved end face of single-mode fiber. The chemical vapors concentration is measured by monitoring the reflection intensity, which is a function of the molecular adsorption in the crystalline micro-porous structure. Multipoint measurement is achieved by an AWG with 16 channels. Four of the 16 channels has been connected to the sensing channels as representative. The proposed VOC sensor performed with the sensitivity from 0.015 to 3.9Â ÃÂ 10â3Â dB/ppm in the concentration range from 0 to 550Â ppm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 227, May 2016, Pages 533-538
Journal: Sensors and Actuators B: Chemical - Volume 227, May 2016, Pages 533-538
نویسندگان
Xiangping Ning, Chunliu Zhao, Feifei Shi, Shangzhong Jin,