NDLI: NH sensitive chemiresistor sensors using plasma functionalized multiwall carbon nanotubes/conducting polymer composites

Content Provider	IEEE Xplore Digital Library
Author	Tai-Jin Kim Si-Dong Kim Nam-Ki Min Jungho Pak, J. Cheol-Jin Lee Soo-Won Kim
Copyright Year	2008
Description	Author affiliation: Dept. of Control & Instrum. Eng., Korea Univ., Jochiwon (Tai-Jin Kim; Si-Dong Kim; Nam-Ki Min) \|\| Sch. of Electr. Eng., Korea Univ., Seoul (Jungho Pak, J.; Cheol-Jin Lee; Soo-Won Kim)
Abstract	We present a micromachined $NH_{3}$ chemiresistor sensor based on $O_{2}$ plasma functionalized multiwall carbon nanotube (MWCNT)/ conducting polymer (CP) composites, and discuss its gas sensing mechanism. The FTIR spectra of plasma-treated MWCNTs indicate that oxygenated groups are created on the surface of CNTs after the plasma treatment. The plasma-functionalized MWCNT/PANI sensor exhibits a linear response of 3.34% per ppm $NH_{3}$ for concentrations ranging from 10 to 100 ppm, and a sensitivity of about 7 times higher than that from a corresponding pristine MWCNT sensor. This dramatic change in resistance is attributed to the fact that the binding of the functional group with the defective CNT is stronger than that with the perfect one.
Starting Page	208
Ending Page	211
File Size	823759
Page Count	4
File Format	PDF
ISBN	9781424425808
ISSN	19300395
DOI	10.1109/ICSENS.2008.4716419
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-26
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gas detectors Polymers Plasma chemistry Chemical sensors Carbon nanotubes Electrodes Plasma temperature Temperature sensors Conducting materials Biosensors
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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