TY - JOUR
T1 - Development and improvement of carbon nanotube-based ammonia gas sensors using ink-jet printed interdigitated electrodes
AU - Teerapanich, Pattamon
AU - Myint, Myo Tay Zar
AU - Joseph, Claire M.
AU - Hornyak, Gabor L.
AU - Dutta, Joydeep
PY - 2013
Y1 - 2013
N2 - Gas sensors have been widely used in many applications including environmental monitoring, industrial control, and detection in warfare or for averting security threats. High sensitivity, selectivity, and fast response time are required for application in real-time monitoring and detection of toxic gases. Single-walled carbon nanotubes (SWCNTs) provide large specific surface area beneficial for gas adsorption thereby increasing sensor sensitivity. In this paper, ammonia (NH3) gas sensors based on SWCNTs were developed using interdigitated silver electrodes printed with nanoparticulate ink on alumina substrates. Simple and inexpensive methods including shaking and dispersion in appropriate solvents were used to debundle SWCNTs for improving sensor response. The fabricated sensors showed a maximum response of 27.3% for 500 ppm NH 3 at room temperature. Detection limit of the sensor devices at room temperature were estimated to be ∼ 3 ppm.
AB - Gas sensors have been widely used in many applications including environmental monitoring, industrial control, and detection in warfare or for averting security threats. High sensitivity, selectivity, and fast response time are required for application in real-time monitoring and detection of toxic gases. Single-walled carbon nanotubes (SWCNTs) provide large specific surface area beneficial for gas adsorption thereby increasing sensor sensitivity. In this paper, ammonia (NH3) gas sensors based on SWCNTs were developed using interdigitated silver electrodes printed with nanoparticulate ink on alumina substrates. Simple and inexpensive methods including shaking and dispersion in appropriate solvents were used to debundle SWCNTs for improving sensor response. The fabricated sensors showed a maximum response of 27.3% for 500 ppm NH 3 at room temperature. Detection limit of the sensor devices at room temperature were estimated to be ∼ 3 ppm.
KW - Ammonia
KW - gas sensor
KW - ink-jet printer
KW - interdigitated silver electrode (IDE)
KW - single-walled carbon nanotubes (SWCNTs)
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U2 - 10.1109/TNANO.2013.2242203
DO - 10.1109/TNANO.2013.2242203
M3 - Article
AN - SCOPUS:84874994596
SN - 1536-125X
VL - 12
SP - 255
EP - 262
JO - IEEE Transactions on Nanotechnology
JF - IEEE Transactions on Nanotechnology
IS - 2
M1 - 6423931
ER -