alinn resistive ammonia gas sensors
alinn resistive ammonia gas sensors
... 5000
0.0
50.0u
100.0u
150.0u
200.0u
Gas out
4000 ppm
2000 ppm
1000 ppm
I (A)
Time (Sec)
500 ppm
Temperature=350
o
C
Gas in
Figure 6
Accepted Manuscript
Title: AlInN resistive ammonia gas sensors
Authors: W.Y. ... of gas molecular on sample
surface and thus enhance the responsivity of AlInN- based gas sensors. In
this study, we report the growth of AlInN. Sensing proper...
aluminum-doped tio2 nano-powders for gas sensors
... TiO
2
gas sensors were more selective and sensitive to CO and O
2
at an operating temperature of 600
◦
C than
pure TiO
2
powders.
© 2007 Published by Elsevier B.V.
Keywords: Ceramic gas sensors; Gas ... dioxide (TiO
2
)-based gas sensors
show good sensitivity and stability in adverse environments and
have the potential to become the material of choice for high tem-
perature gas...
ammonia gas sensor based on electrosynthesized polypyrrole films
... in gas sensors for the detection of ethanol gas [54], benzene,
xylene and toluene [55].
Other studies focused on ammonia gas sensors using polypyr-
role as sensitive layer. Thus, an ammonia gas ... analysis of NH
3
vapors and (b) schematic drawing of the ammonia gas sensor.
2. Experimental
2.1. Fabrication of gas sensors
The gas sensors were fabricated using micros...
comparison of single and binary oxide moo3, tio2 and wo3 sol – gel gas sensors
... Such sensors have been commercialized by NGK
Spark Plug Co. Ltd. [1]. Compared to the traditional lambda
sensors based on ZrO
2
,TiO
2
thick ®lm sensors offer a faster
response time [2]. TiO
2
gas ... photolysis, electrochromic devices,
selective catalysts and gas sensors [4]. Amorphous and
polycrystalline WO
3
®lms are particularly attractive as
gas sensors because they show...
conduction model of metal oxide gas sensors
... scientists
interested in gas sensing under atmospheric condi-
tions. SnO
2
sensors are the best-understood prototype
of oxide-based gas sensors. Nevertheless, highly spe-
cific and sensitive SnO
2
sensors are ... presented here is one step towards a general applicable model for real world gas sensors.
Keywords: metal oxide, gas sensors, conduction model
1. Introduction
Metal ox...
detection of organic gases using tio2 nanotube - based gas sensors
... gas sensors owing to their
sensitive conductivity changes upon gas reaction and adsorption. SnO
2
and ZnO have been the most widely used
materials for gas sensing applications. Recently, gas ...
www.elsevier.com/locate/procedia
Proceedings of the Eurosensors XXIII conference
Detection of organic gases using TiO
2
nanotube-based gas sensors
Min-Hyun Seo
a
, Masayoshi Yua...
gas sensors using hierarchical and hollow oxide nanostructures overview
... to the rapid gas diffusion. This is analogous to
enhancing the gas response [114-116] and/or gas responding kinetics [117] by
decreasing the film thickness in the thin-film gas sensors.
The ... in gas sensing mechanism, can promote the outward
migration of metal ions by developing an electric field.
4. Gas sensors using hollow oxide structures
4.1 Principal parameters to det...
gas sensors using hierarchical and hollow oxide nanostructures
... nanostructures
Hollow structures
Oxide semiconductor gas sensors
Gas response
Gas response kinetics
abstract
Hierarchical and hollow oxide nanostructures are very promising gas sensor materials due to their high
surface ... enhanced both the gas response and the gas
response speed simultaneously and substantially.
7. Gas sensing mechanism of hierarchical and hollow
nanostructu...
influence of binders on the sensing and electrical characteristics of wo3-based gas sensors
... the employed film gas sensors and b
the measurement circuit.
Ž.
SEM and an H-7100 transmission electron microscope
Ž.
TEM . Source NO gas was obtained by mixing NO gas
x
and NO gas with the volume ... ambient gas conditions. The sensitivity scale
is shown in left and right axes for NO gas and other gases, respectively.
x
Sensors fabricated with binders show better selectivity...
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