Fabrication of V-Groove High Temperature Oxygen Sensor by Gallium Oxide

2014 ◽  
Vol 1023 ◽  
pp. 137-140
Author(s):  
Kao Feng Yarn ◽  
Win Jet Luo
Keyword(s):  
High Temperature ◽  
Metal Oxide ◽  
Response Time ◽  
Gallium Oxide ◽  
Oxygen Sensor ◽  
High Sensitivity ◽  
Oxide Structure ◽  
Sensing Properties ◽  
Grain Sizes ◽  
Good Potential

Effects of a metal oxide structure on the oxygen sensing properties are investigated. In the existence of the etched V-groove gallium oxide geometry, its electrical and sensing properties, i.e., high sensitivity and response time areinvestigated. Grain sizes of the material are dependent on different sputtering conditions and investigated by AFM. Under the partial-voltage circuit measurement, it can be confirmed that the increase of temperature will result in the increase of resistance for the Ga2O3 oxygen sensor. From experiment, good stability and repeatability of the oxide sensor are demonstrated when tested under oxygen concentration. These properties show that the oxide structure has a good potential for high sensitivity oxygen sensor.

scholarly journals 2D Materials in Infrared Detector Family

Proceedings ◽  
2019 ◽  
Vol 27 (1) ◽  
pp. 33
Author(s):  
Antoni Rogalski
Keyword(s):  
High Temperature ◽  
Response Time ◽  
Near Infrared ◽  
2D Materials ◽  
Infrared Detector ◽  
High Sensitivity ◽  
Fast Response ◽  
Two Dimensional ◽  
Semiconducting Material ◽  
Thz Detectors

The paper compares two-dimensional (2D) material detectors performance with traditionally and commercially available ones operating in high temperature conditions. The most effective single graphene detectors are THz detectors which utilize plasma rectification phenomena in FETs. Most of 2D layered semiconducting material photodetectors operate at the visible and near-infrared regions and generally their high sensitivity does not coincide with a fast response time, which limits real detector functions.

High temperature zirconia oxygen sensor with sealed metal/metal oxide internal reference

2007 ◽  
Vol 124 (1) ◽  
pp. 192-201 ◽  
Author(s):  
John V. Spirig ◽  
Ramasamy Ramamoorthy ◽  
Sheikh A. Akbar ◽  
Jules L. Routbort ◽  
Dileep Singh ◽  
...  
Keyword(s):  
High Temperature ◽  
Metal Oxide ◽  
Oxygen Sensor ◽  
Internal Reference ◽  
Metal Metal

scholarly journals Rapid Response High Temperature Oxygen Sensor Based on Titanium Doped Gallium Oxide

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Sandeep Manandhar ◽  
Anil K. Battu ◽  
Arun Devaraj ◽  
V. Shutthanandan ◽  
S. Thevuthasan ◽  
...  
Keyword(s):  
High Temperature ◽  
Gallium Oxide ◽  
Oxygen Sensor ◽  
Rapid Response

The Ordered Phase Formation in Ti-Al-Ga Alloys

1970 ◽  
Vol 28 ◽  
pp. 440-441
Author(s):  
Shiro Fujishiro ◽  
Harold L. Gegel
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Titanium Alloys ◽  
Growth Kinetics ◽  
Stoichiometric Composition ◽  
Good Potential ◽  
Alpha Titanium ◽  
Cold Rolled ◽  
Kinetics Of ◽  
Thermal Stability Of

Ordered-alpha titanium alloys having a DO19 type structure have good potential for high temperature (600°C) applications, due to the thermal stability of the ordered phase and the inherent resistance to recrystallization of these alloys. Five different Ti-Al-Ga alloys consisting of equal atomic percents of aluminum and gallium solute additions up to the stoichiometric composition, Ti3(Al, Ga), were used to study the growth kinetics of the ordered phase and the nature of its interface.The alloys were homogenized in the beta region in a vacuum of about 5×10-7 torr, furnace cooled; reheated in air to 50°C below the alpha transus for hot working. The alloys were subsequently acid cleaned, annealed in vacuo, and cold rolled to about. 050 inch prior to additional homogenization

scholarly journals Tungsten Oxide Based Sensor for Oxygen Detection

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 952 ◽  
Author(s):  
Wangi Sari ◽  
Simon Leigh ◽  
James Covington
Keyword(s):  
Metal Oxide ◽  
Linear Relationship ◽  
Tungsten Oxide ◽  
Spin Coating ◽  
Low Temperatures ◽  
Oxygen Sensor ◽  
High Response ◽  
Humid Air ◽  
Dry Air ◽  
Oxygen Detection

In this paper we report on the development tungsten oxide based chemiresistive sensors for the monitoring of oxygen at low temperatures (T ≤ 400 °C) in dry and humid air. The sensors were deposited onto alumina substrate by a combination of spin coating and a photolithographic process to define the sensing area. Our results show that the sensors comply with a linear relationship over a 0 to 20% concentration range, with a high response towards oxygen. The highest response was observed at 350 °C (ΔR/Ra = 7.8) in humid and in dry air (ΔR/Ra = 18). This result is a significant improvement over our previous experiments and we believe to take the concept of a metal-oxide based oxygen sensor a step closer.

High Temperature Oxygen Sensor Using a Pt–Ga2O3–Pt Sandwich Structure

2004 ◽  
Vol 43 (10) ◽  
pp. 7213-7216 ◽  
Author(s):  
Cristian-Ioan Baban ◽  
Yoshitaka Toyoda ◽  
Masami Ogita
Keyword(s):  
High Temperature ◽  
Sandwich Structure ◽  
Oxygen Sensor

Polyaniline/SnO2 Nanocomposite Sensor for NO2 Gas Sensing at Low Operating Temperature

2015 ◽  
Vol 14 (04) ◽  
pp. 1550011 ◽  
Author(s):  
A. Sharma ◽  
M. Tomar ◽  
V. Gupta ◽  
A. Badola ◽  
N. Goswami
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Chemical Route ◽  
Sensing Properties ◽  
Response Recovery ◽  
Transmission Electron ◽  
Gas Sensing Properties

In this paper gas sensing properties of 0.5–3% polyaniline (PAni) doped SnO 2 thin films sensors prepared by chemical route have been studied towards the trace level detection of NO 2 gas. The structural, optical and surface morphological properties of the PAni doped SnO 2 thin films were investigated by performing X-ray diffraction (XRD), Transmission electron microscopy (TEM) and Raman spectroscopy measurements. A good correlation has been identified between the microstructural and gas sensing properties of these prepared sensors. Out of these films, 1% PAni doped SnO 2 sensor showed high sensitivity towards NO 2 gas along with a sensitivity of 3.01 × 102 at 40°C for 10 ppm of gas. On exposure to NO 2 gas, resistance of all sensors increased to a large extent, even greater than three orders of magnitude. These changes in resistance upon removal of NO 2 gas are found to be reversible in nature and the prepared composite film sensors showed good sensitivity with relatively faster response/recovery speeds.

High Temperature Deformation Mechanism Maps of NiAl

2004 ◽  
Vol 449-452 ◽  
pp. 57-60
Author(s):  
I.G. Lee ◽  
A.K. Ghosh
Keyword(s):  
High Temperature ◽  
Strain Rate ◽  
Deformation Mechanism ◽  
Calculation Method ◽  
Deformation Behavior ◽  
Tensile Tests ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Grain Sizes ◽  
Temperature Strain

In order to analyze high temperature deformation behavior of NiAl alloys, deformation maps were constructed for stoichiometric NiAl materials with grain sizes of 4 and 200 µm. Relevant constitute equations and calculation method will be described in this paper. These maps are particularly useful in identifying the location of testing domains, such as creep and tensile tests, in relation to the stress-temperature-strain rate domains experienced by NiAl.

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