scholarly journals Electrospun Metal Oxide Nanofibers and Their Conductometric Gas Sensor Application. Part 1: Nanofibers and Features of Their Forming

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1544
Author(s):  
Ghenadii Korotcenkov
Keyword(s):  
Electrical Properties ◽  
Metal Oxide ◽  
Gas Sensor ◽  
Critical Review ◽  
Basic Principles ◽  
Sensor Application ◽  
Sensor Applications ◽  
Structural And Electrical Properties

Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications. This critical review attempts to assess the feasibility of these perspectives. The article in Part 1 discusses the basic principles of electrospinning and the features of the formation of metal oxide nanofibers using this method. Approaches to optimization of nanofibers’ parameters important for gas sensor application are also considered.

scholarly journals Electrospun Metal Oxide Nanofibers and Their Сonductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1555
Author(s):  
Ghenadii Korotcenkov
Keyword(s):  
Electrical Properties ◽  
Metal Oxide ◽  
Detailed Analysis ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Critical Review ◽  
Future Prospects ◽  
Sensor Applications ◽  
Structural And Electrical Properties ◽  
Insight Into

Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications. This critical review attempts to assess the feasibility of these perspectives. This article discusses approaches to the manufacture of nanofiber-based gas sensors, as well as the results of analysis of the performances of these sensors. A detailed analysis of the disadvantages that can limit the use of electrospinning technology in the development of gas sensors is also presented in this article. It also proposes some approaches to solving problems that limit the use of nanofiber-based gas sensors. Finally, the summary provides an insight into the future prospects of electrospinning technology for the development of gas sensors aimed for the gas sensor market.

Pulsed laser deposition of metal oxide nanostructures for highly sensitive gas sensor applications

2016 ◽  
Vol 236 ◽  
pp. 978-987 ◽  
Author(s):  
Joni Huotari ◽  
Ville Kekkonen ◽  
Tomi Haapalainen ◽  
Martin Leidinger ◽  
Tilman Sauerwald ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Pulsed Laser Deposition ◽  
Gas Sensor ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Sensor Applications ◽  
Oxide Nanostructures ◽  
Highly Sensitive ◽  
Metal Oxide Nanostructures

Metal-oxide nanostructures produced by PLD in open air for gas sensor applications

2019 ◽  
Vol 470 ◽  
pp. 861-869 ◽  
Author(s):  
G. Atanasova ◽  
A. Og. Dikovska ◽  
T. Dilova ◽  
B. Georgieva ◽  
G.V. Avdeev ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Sensor Applications ◽  
Oxide Nanostructures ◽  
Metal Oxide Nanostructures

scholarly journals STRUCTURAL AND ELECTRICAL PROPERTIES OF TANTALUM PENTAOXIDE (Ta2O5) THIN FILMS – A REVIEW

2013 ◽  
Vol 22 ◽  
pp. 564-569
Author(s):  
KANTA RATHEE ◽  
B. P. MALIK
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Electrical Properties ◽  
Metal Oxide ◽  
High Dielectric Constant ◽  
Complementary Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Structural And Electrical Properties ◽  
High Dielectric ◽  
Deposited Films

Down scaling of complementary metal oxide semiconductor transistors has put limitations on silicon dioxide to be used as an effective dielectric. It is necessary to replace the SiO 2 with a physically thicker layer of oxides of high dielectric constant. Thus high k dielectrics are used to suppress the existing challenges for CMOS scaling. Many new oxides are being evaluated as gate dielectrics such as Ta2O5 , HfO2 , ZrO2 , La2O3 , HfO2 , TiO2 , Al2O3 , Y2O3 etc but it was soon found that these oxides in many respects have inferior electronic properties to SiO2 . But the the choice alone of suitable metal oxide with high dielectric constant is not sufficient to overcome the scaling challenges. The various deposition techniques and the conditions under which the thin films are deposited plays important role in deciding the structural and electrical properties of the deposited films. This paper discusses in brief the various deposition conditions which are employed to improve the structural and electrical properties of the deposited films.

scholarly journals SPM—SEM Investigations of Semiconductor Nanowires for Integrated Metal Oxide Gas Sensors

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 701 ◽  
Author(s):  
Verena Leitgeb ◽  
Katrin Fladischer ◽  
Frank Hitzel ◽  
Florentyna Sosada-Ludwikowska ◽  
Johanna Krainer ◽  
...  
Keyword(s):  
Electron Beam ◽  
Metal Oxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Semiconductor Nanowires ◽  
Kelvin Probe ◽  
Sensor Applications ◽  
Sensitivity And Selectivity ◽  
Stable Performance ◽  
Metal Oxide Gas Sensors

Integration of metal oxide nanowires in metal oxide gas sensors enables a new generation of gas sensor devices, with increased sensitivity and selectivity. For reproducible and stable performance of next generation sensors, the electric properties of integrated nanowires have to be well understood, since the detection principle of metal oxide gas sensors is based on the change in electrical conductivity during gas exposure. We study two different types of nanowires that show promising properties for gas sensor applications with a Scanning Probe Microscope—Scanning Electron Microscope combination. Electron Beam Induced Current and Kelvin Probe Force Microscopy measurements with a lateral resolution in the nanometer regime are performed. Our work offers new insights into the dependence of the nanowire work function on its composition and size, and into the local interaction between electron beam and semiconductor nanowires.

Metal Oxide Nanowires for Gas Sensor Applications

2014 ◽  
Vol 159 (9) ◽  
pp. 385-389 ◽  
Author(s):  
Anton Köck ◽  
Livia Chitu ◽  
Stefan Defregger ◽  
Elke Kraker ◽  
Günther Maier ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Oxide Nanowires ◽  
Sensor Applications ◽  
Metal Oxide Nanowires

scholarly journals Metal/Metal-Oxide Nanoclusters for Gas Sensor Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-17 ◽  
Author(s):  
Ahmad I. Ayesh
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Recent Progress ◽  
Volume Ratio ◽  
Building Blocks ◽  
Special Focus ◽  
Gaseous Species ◽  
Sensor Applications ◽  
Metal Metal

The development of gas sensors that are based on metal/metal-oxide nanoclusters has attracted intensive research interest in the last years. Nanoclusters are suitable candidates for gas sensor applications because of their large surface-to-volume ratio that can be utilized for selective and rapid detection of various gaseous species with low-power consuming electronics. Herein, nanoclusters are used as building blocks for the construction of gas sensor where the electrical conductivity of the nanoclusters changes dramatically upon exposure to the target gas. In this review, recent progress in the fabrication of size-selected metallic nanoclusters and their utilization for gas sensor applications is presented. Special focus will be given to the enhancement of the sensing performance through the rational functionalization and utilization of different nanocluster materials.

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