Gas Sensitivity of MnO2 Doped Nano ZnO Coplanar Plate-Type Gas Sensor Arrays

2010 ◽  
Vol 159 ◽  
pp. 634-637 ◽  
Author(s):  
Kai Jin Huang
Keyword(s):  
Hydrothermal Method ◽  
Gas Sensor ◽  
Screen Printing ◽  
Sensor Arrays ◽  
Large Specific Surface Area ◽  
Zno Film ◽  
Gas Sensitivity ◽  
Nano Zno ◽  
Plate Type ◽  
Gas Sensor Arrays

Based on the integrated technologies of screen printing and hydrothermal method, this paper introduced a new integrative method with materials microstructure controlled growth and gas sensor fabrication. For example,based on space positioning using screen printing and ZnO nanwall with large specific surface area induced by hydrothermal method on the surface of ZnO film, the MnO2 doped nano ZnO coplanar plate-type gas sensor arrays with a good gas sensitivity to formaldehyde were fabricated successfully. The results show that the sensitivity to formaldehyde of MnO2 doped nano ZnO gas sensor arrays fabricated by hydrothermal method in 0.01mol/L Zn(NO3)2 solution, 95°C for 5h on the surface of MnO2 doped nano ZnO film and sintering at 500°C for 2h is higher than that of in distilled water. The existence of ZnO nanwall with large specific surface area induced by hydrothermal method on the surface of MnO2 doped nano ZnO film is the important reason of improvement for the sensitivity to formaldehyde.

Metal Oxide Gas Sensor Arrays: Geometrical Design and Selectivity

2009 ◽  
Author(s):  
Frank Röck ◽  
Nicolae Barsan ◽  
Udo Weimar ◽  
Matteo Pardo ◽  
Giorgio Sberveglieri
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Sensor Arrays ◽  
Geometrical Design ◽  
Metal Oxide Gas Sensor ◽  
Gas Sensor Arrays

Gas Sensor Arrays by Supersonic Cluster Beam Deposition

2019 ◽  
pp. 282-284
Author(s):  
E. Barborini ◽  
M. Leccardi ◽  
G. Bertolini ◽  
O. Rorato ◽  
M. Franchi ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Sensor Arrays ◽  
Cluster Beam ◽  
Cluster Beam Deposition ◽  
Beam Deposition ◽  
Gas Sensor Arrays

scholarly journals Advanced Micro- and Nano-Gas Sensor Technology: A Review

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1285 ◽  
Author(s):  
Haleh Nazemi ◽  
Aashish Joseph ◽  
Jaewoo Park ◽  
Arezoo Emadi
Keyword(s):  
Gas Sensor ◽  
Gas Sensors ◽  
High Performance ◽  
Sensor Arrays ◽  
Sensor Technology ◽  
Sensor Design ◽  
Fabrication Technology ◽  
Nano Fabrication ◽  
Wide Range ◽  
Gas Sensor Arrays

Micro- and nano-sensors lie at the heart of critical innovation in fields ranging from medical to environmental sciences. In recent years, there has been a significant improvement in sensor design along with the advances in micro- and nano-fabrication technology and the use of newly designed materials, leading to the development of high-performance gas sensors. Advanced micro- and nano-fabrication technology enables miniaturization of these sensors into micro-sized gas sensor arrays while maintaining the sensing performance. These capabilities facilitate the development of miniaturized integrated gas sensor arrays that enhance both sensor sensitivity and selectivity towards various analytes. In the past, several micro- and nano-gas sensors have been proposed and investigated where each type of sensor exhibits various advantages and limitations in sensing resolution, operating power, response, and recovery time. This paper presents an overview of the recent progress made in a wide range of gas-sensing technology. The sensing functionalizing materials, the advanced micro-machining fabrication methods, as well as their constraints on the sensor design, are discussed. The sensors’ working mechanisms and their structures and configurations are reviewed. Finally, the future development outlook and the potential applications made feasible by each category of the sensors are discussed.

scholarly journals Methods for Early Detection of Microbiological Infestation of Buildings Based on Gas Sensor Technologies

Chemosensors ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 7 ◽  
Author(s):  
Monika Garbacz ◽  
Agnieszka Malec ◽  
Sylwia Duda-Saternus ◽  
Zbigniew Suchorab ◽  
Łukasz Guz ◽  
...  
Keyword(s):  
Early Detection ◽  
Gas Sensor ◽  
Sick Building Syndrome ◽  
Sensor Arrays ◽  
Short Review ◽  
Detection Methods ◽  
Detection Techniques ◽  
Microbiological Techniques ◽  
Chemical Conditions ◽  
Gas Sensor Arrays

In this review, the problem of microbiological infestation of buildings was discussed. The techniques of detection were described as well, with special attention drawn to the rapid-early detection methods based on gas sensor arrays. The physical and chemical conditions of the building environment conducive to the development of microorganisms and the technical conditions influencing the problem of microbiological infestation were investigated. Additionally, the harmful effects on human health caused by the microbiological contamination were discussed, with a short review of particular groups of microorganisms causing sick building syndrome. Among the detection techniques, the traditional microbiological techniques as well as the molecular and chemical methods were presented. Different designs of the gas sensor arrays together with the various techniques of analyzing the received multidimensional signal were described, analyzed, and compared in detail.

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