Surface Potential-Based Approach to Estimate Bias Dependent Sensitivity of 1-D Metal Oxide Resistive Gas Sensors

2020 ◽  
Vol 20 (11) ◽  
pp. 5766-5775
Author(s):  
Arnab Hazra
Keyword(s):  
Metal Oxide ◽  
Surface Potential ◽  
Gas Sensors ◽  
Resistive Gas Sensors

scholarly journals Resistive gas sensors based on metal-oxide nanowires

2019 ◽  
Vol 126 (24) ◽  
pp. 241102 ◽  
Author(s):  
Ali Mirzaei ◽  
Jae-Hyoung Lee ◽  
Sanjit Manohar Majhi ◽  
Matthieu Weber ◽  
Mikhael Bechelany ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Oxide Nanowires ◽  
Metal Oxide Nanowires ◽  
Resistive Gas Sensors

Single-Crystalline Metal Oxide, Resistive Gas Sensors Advances and Perspectives

2018 ◽  
Author(s):  
E. Llobet ◽  
E. Navarrete ◽  
F. E. Annanouch ◽  
M. Alvarado ◽  
E. Gonzalez ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Single Crystalline ◽  
Resistive Gas Sensors ◽  
Crystalline Metal

Temperature Dependence of Responses in Metal Oxide Gas Sensors

2015 ◽  
Vol 644 ◽  
pp. 181-184 ◽  
Author(s):  
S. Rahbarpour ◽  
S. Sajed ◽  
H. Ghafoorifard
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Operating Temperature ◽  
Diffusion Theory ◽  
Gas Diffusion ◽  
Optimum Operating ◽  
Optimum Operating Temperature ◽  
Metal Oxide Gas Sensors ◽  
Resistive Gas Sensors

Selecting an optimum operating temperature for metal oxide gas sensors is of prime technical importance. Here, the temperature behavior of various kinds of metal oxide gas sensors in response to different levels of reducing contaminants in air is reported. The examined gas sensor samples include a Tin oxide-based resistive gas sensor and home-made diode-type Ag-TiO2-Ti gas sensors. Recorded response vs. temperature curves of all samples represent two different typical features: The responses related to the resistive gas sensor exhibit distinct maximum response at a well defined operating temperature regardless of the target gas concentration level, but the diode type samples demonstrated a continuously rising response as the operating temperature decreased to highly contaminated atmospheres. At low contaminant levels, diode type gas sensors change their behaviour and act similar to resistive gas sensors. Reported results were described by a model based on the gas diffusion theory.

scholarly journals Nanostructured Metal Oxide-Based Acetone Gas Sensors: A Review

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3096 ◽  
Author(s):  
Vahid Amiri ◽  
Hossein Roshan ◽  
Ali Mirzaei ◽  
Giovanni Neri ◽  
Ahmad I. Ayesh
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Human Life ◽  
High Surface ◽  
High Surface Area ◽  
High Sensitivity ◽  
Volatile Organic ◽  
Resistive Gas Sensors ◽  
Nanostructured Metal

Acetone is a well-known volatile organic compound that is widely used in different industrial and domestic areas. However, it can have dangerous effects on human life and health. Thus, the realization of sensitive and selective sensors for recognition of acetone is highly important. Among different gas sensors, resistive gas sensors based on nanostructured metal oxide with high surface area, have been widely reported for successful detection of acetone gas, owing to their high sensitivity, fast dynamics, high stability, and low price. Herein, we discuss different aspects of metal oxide-based acetone gas sensors in pristine, composite, doped, and noble metal functionalized forms. Gas sensing mechanisms are also discussed. This review is an informative document for those who are working in the field of gas sensors.

Metal-oxide based ammonia gas sensors: A review

2020 ◽  
Vol 10 ◽  
Author(s):  
Priya Gupta ◽  
Savita Maurya ◽  
Narendra Kumar Pandey ◽  
Vernica Verma
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Review Paper ◽  
Gas Sensing ◽  
Gas Sensitivity ◽  
Ammonia Gas ◽  
Ammonia Sensing ◽  
Ammonia Gas Sensors

: This review paper encompasses a study of metal-oxide and their composite based gas sensors used for the detection of ammonia (NH3) gas. Metal-oxide has come into view as an encouraging choice in the gas sensor industry. This review paper focuses on the ammonia sensing principle of the metal oxides. It also includes various approaches adopted for increasing the gas sensitivity of metal-oxide sensors. Increasing the sensitivity of the ammonia gas sensor includes size effects and doping by metal or other metal oxides which will change the microstructure and morphology of the metal oxides. Different parameters that affect the performances like sensitivity, stability, and selectivity of gas sensors are discussed in this paper. Performances of the most operated metal oxides with strengths and limitations in ammonia gas sensing application are reviewed. The challenges for the development of high sensitive and selective ammonia gas sensor are also discussed.

Sulfur Dioxide Sensors

2021 ◽  
Keyword(s):  
Ionic Liquids ◽  
Sulfur Dioxide ◽  
Metal Oxide ◽  
Gas Sensors ◽  
Optical Sensors ◽  
Recent Progress ◽  
Amperometric Sensors ◽  
Metal Oxide Sensors ◽  
Semiconducting Metal Oxide

Recent progress on the sensing and monitoring of sulfur dioxide in the environment is presented. The sensing materials covered include potentiometric gas sensors, amperometric sensors, optical sensors involving colorimetric and fluorescence changes, sensors based on ionic liquids, semiconducting metal-oxide sensors, photoacoustic detectors and biosensors.

scholarly journals Advanced development of metal oxide nanomaterials for H2 gas sensing applications

2021 ◽  
Author(s):  
Yushu Shi ◽  
Huiyan Xu ◽  
Tongyao Liu ◽  
Shah Zeb ◽  
Yong Nie ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
The Past ◽  
Sensing Applications ◽  
The Future ◽  
Metal Oxide Nanomaterials ◽  
Nanomaterials Synthesis ◽  
Advanced Development

The scheme of the structure of this review includes an introduction from the metal oxide nanomaterials’ synthesis to application in H2 gas sensors—a vision from the past to the future.

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