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Sensors 2015, 15(1), 1885-1902; doi:10.3390/s150101885

Development of Fabric-Based Chemical Gas Sensors for Use as Wearable Electronic Noses

1
Materials Science and Engineering Programme, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
2
Center of Nanoscience and Nanotechnology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
3
Faculty of Science and Technology, Rajamangala University of Technology Suvarnabhumi, Nonthaburi 11000, Thailand
4
Department of Physics, Faculty of science, Mahidol University, Bangkok 10400, Thailand
5
NANOTEC Center of Excellence at Mahidol University, National Nanotechnology Center, Bangkok 10400, Thailand
*
Author to whom correspondence should be addressed.
Received: 12 November 2014 / Accepted: 12 January 2015 / Published: 16 January 2015
(This article belongs to the Section Chemical Sensors)
View Full-Text   |   Download PDF [3118 KB, uploaded 16 January 2015]   |  

Abstract

Novel gas sensors embroidered into fabric substrates based on polymers/ SWNT-COOH nanocomposites were proposed in this paper, aiming for their use as a wearable electronic nose (e-nose). The fabric-based chemical gas sensors were fabricated by two main processes: drop coating and embroidery. Four potential polymers (PVC, cumene-PSMA, PSE and PVP)/functionalized-SWCNT sensing materials were deposited onto interdigitated electrodes previously prepared by embroidering conductive thread on a fabric substrate to make an optimal set of sensors. After preliminary trials of the obtained sensors, it was found that the sensors yielded a electrical resistance in the region of a few kilo-Ohms. The sensors were tested with various volatile compounds such as ammonium hydroxide, ethanol, pyridine, triethylamine, methanol and acetone, which are commonly found in the wastes released from the human body. These sensors were used to detect and discriminate between the body odors of different regions and exist in various forms such as the urine, armpit and exhaled breath odor. Based on a simple pattern recognition technique, we have shown that the proposed fabric-based chemical gas sensors can discriminate the human body odor from two persons. View Full-Text
Keywords: fabric-based chemical gas sensor; embroidered sensor; electronic nose; volatile amine fabric-based chemical gas sensor; embroidered sensor; electronic nose; volatile amine
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Seesaard, T.; Lorwongtragool, P.; Kerdcharoen, T. Development of Fabric-Based Chemical Gas Sensors for Use as Wearable Electronic Noses. Sensors 2015, 15, 1885-1902.

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