Vol 14: Response Characterization of a Fiber Optic Sensor Array with Dye-Coated Planar Waveguide for Detection of Volatile Organic Compounds.Reportar como inadecuado



 Vol 14: Response Characterization of a Fiber Optic Sensor Array with Dye-Coated Planar Waveguide for Detection of Volatile Organic Compounds.


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This article is from Sensors Basel, Switzerland, volume 14.AbstractWe have developed a multi-array side-polished optical-fiber gas sensor for the detection of volatile organic compound VOC gases. The side-polished optical-fiber coupled with a polymer planar waveguide PWG provides high sensitivity to alterations in refractive index. The PWG was fabricated by coating a solvatochromic dye with polyvinylpyrrolidone. To confirm the effectiveness of the sensor, five different sensing membranes were fabricated by coating the side-polished optical-fiber using the solvatochromic dyes Reinhardts dye, Nile red, 4-aminophthalimide, 4-amino-N-methylphthalimide, and 4-dimethylaminocinnamaldehyde, which have different polarities that cause changes in the effective refractive index of the sensing membrane owing to evanescent field coupling. The fabricated gas detection system was tested with five types of VOC gases, namely acetic acid, benzene, dimethylamine, ethanol, and toluene at concentrations of 1, 2,…,10 ppb. Second-regression and principal component analyses showed that the response properties of the proposed VOC gas sensor were linearly shifted bathochromically, and each gas showed different response characteristics.



Autor: Lee, Jae-Sung; Yoon, Na-Rae; Kang, Byoung-Ho; Lee, Sang-Won; Gopalan, Sai-Anand; Jeong, Hyun-Min; Lee, Seung-Ha; Kwon, Dae-Hyuk; Kang, Shin-Won

Fuente: https://archive.org/







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