Application of 3D hierarchical monoclinic-type structural Sb-doped WO3 towards NO2 gas detection at low temperature

Nanoscale ◽  
2018 ◽  
Vol 10 (16) ◽  
pp. 7440-7450 ◽  
Author(s):  
Juanjuan Qi ◽  
Ke Chen ◽  
Yi Xing ◽  
Hua Fan ◽  
Hewei Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxide ◽  
Gas Sensors ◽  
Three Dimensional ◽  
Gas Detection ◽  
Scientific Interest ◽  
Semiconducting Metal Oxide

Currently, the development of semiconducting metal oxide (SMO)-based gas sensors with innovative modification and three-dimensional (3D) structural designs has become a significant scientific interest due to their potential for addressing key technological challenges.

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 Konjac glucomannan-templated synthesis of three-dimensional NiO nanostructures assembled from porous NiO nanoplates for gas sensors

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9584-9593 ◽  
Author(s):  
Le Lam Son ◽  
Nguyen Duc Cuong ◽  
Tran Thi Van Thi ◽  
Le Trung Hieu ◽  
Do Dang Trung ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Template Synthesis ◽  
Three Dimensional ◽  
Porous Metal ◽  
Konjac Glucomannan ◽  
Templated Synthesis ◽  
Oxide Nanostructures ◽  
Metal Oxide Nanostructures ◽  
Highly Porous

Biopolymer template synthesis has attracted extensive interest for fabricating highly porous metal oxide nanostructures.

Extraordinary performance of semiconducting metal oxide gas sensors using dielectric excitation

2020 ◽  
Vol 3 (5) ◽  
pp. 280-289 ◽  
Author(s):  
Radislav A. Potyrailo ◽  
Steven Go ◽  
Daniel Sexton ◽  
Xiaxi Li ◽  
Nasr Alkadi ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Metal Oxide Gas Sensors ◽  
Semiconducting Metal Oxide

scholarly journals A Compact, Reliable and Efficient 16 Channel Power Supply for the Automated Screening of Semiconducting Metal Oxide Gas Sensors

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 882 ◽  
Author(s):  
Christof Hammer ◽  
Johannes Warmer ◽  
Sebastian Sporrer ◽  
Peter Kaul ◽  
Ronald Thoelen ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Embedded System ◽  
Gas Sensors ◽  
Power Supply ◽  
Failure Detection ◽  
Operating Conditions ◽  
Detection Methods ◽  
Metal Oxide Gas Sensors ◽  
Automated Screening ◽  
Semiconducting Metal Oxide

The choice of suitable semiconducting metal oxide (MOX) gas sensors for the detection of a specific gas or gas mixture is time-consuming since the sensor’s sensitivity needs to be characterized at multiple temperatures to find its optimal operating conditions. To obtain reliable measurement results, it is very important that the power for the sensor’s integrated heater is stable, regulated and error-free (or error-tolerant). Especially the error-free requirement can be only be achieved if the power supply implements failure-avoiding and failure-detection methods. The biggest challenge is deriving multiple different voltages from a common supply in an efficient way while keeping the system as small and lightweight as possible. This work presents a reliable, compact, embedded system that addresses the power supply requirements for fully automated simultaneous sensor characterization for up to 16 sensors at multiple temperatures. The system implements efficient (avg. 83.3% efficiency) voltage conversion with low ripple output (<32 mV) and supports static or temperature-cycled heating modes. Voltage and current of each channel are constantly monitored and regulated to guarantee reliable operation. To evaluate the proposed design, 16 sensors were screened. The results are shown in the experimental part of this work.

scholarly journals 3D Gas Distribution with and without Artificial Airflow: An Experimental Study with a Grid of Metal Oxide Semiconductor Gas Sensors

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 911 ◽  
Author(s):  
Javier Burgués ◽  
Victor Hernandez ◽  
Achim J. Lilienthal ◽  
Santiago Marco
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Three Dimensional ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Wind Tunnels ◽  
Gaseous Emissions ◽  
Gas Distribution ◽  
Life Saving

Gas distribution modelling can provide potentially life-saving information when assessing the hazards of gaseous emissions and for localization of explosives, toxic or flammable chemicals. In this work, we deployed a three-dimensional (3D) grid of metal oxide semiconductor (MOX) gas sensors deployed in an office room, which allows for novel insights about the complex patterns of indoor gas dispersal. 12 independent experiments were carried out to better understand dispersion patters of a single gas source placed at different locations of the room, including variations in height, release rate and air flow profiles. This dataset is denser and richer than what is currently available, i.e., 2D datasets in wind tunnels. We make it publicly available to enable the community to develop, validate, and compare new approaches related to gas sensing in complex environments.

Fluctuation enhanced sensing (FES) with a nanostructured, semiconducting metal oxide film for gas detection and classification

2013 ◽  
Vol 188 ◽  
pp. 651-660 ◽  
Author(s):  
Bulent Ayhan ◽  
Chiman Kwan ◽  
Jin Zhou ◽  
Laszlo B. Kish ◽  
Kurt D. Benkstein ◽  
...  
Keyword(s):  
Oxide Film ◽  
Metal Oxide ◽  
Gas Detection ◽  
Semiconducting Metal Oxide ◽  
Metal Oxide Film

Low Temperature Solution-Based Fabrications of Metal Oxide Semiconductor Films by Mechanical Sintering

2008 ◽  
Vol 1113 ◽  
Author(s):  
Manabu Yoshida ◽  
Kouji Suemori ◽  
Sei Uemura ◽  
Satoshi Hoshino ◽  
Noriyuki Takada ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxide ◽  
Electronic Devices ◽  
Three Dimensional ◽  
Solution Process ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Flexible Electronic ◽  
Printed Patterns ◽  
Flexible Electronic Devices

ABSTRACTVarious flexible electronic devices have been intensively studied and developed in this decade. Most of consumers expect to obtain these flexible electronic devices in the next decade. The spread of flexible electronic devices depends on the process costs and material costs. Today prices of materials and energy sources are continuously increasing. Therefore, using of expensive materials and wasteful processes for fabricating electronic devices should be reconsidered. Printing techniques, a representative solution process, are inexpensive and very effective for mass production of electronic devices. We have developed a low-temperature process for fabricating flexible printed patterns of metals and semiconductors by using relatively inexpensive commercial pastes. A characteristic of our process is to utilize mechanical energies for sintering particles contained in pastes. In our process, the precise three-dimensional pressure control brings about the improvement of electrical properties in the printed patterns, the preservation of pattern accuracy and the mechanical durability of the printed patterns. In our experiment, we have already fabricated very low resistivity metal patterns (about 6×10−6Ω·cm) at ca.120°C without using any kinds of nano-particle paste, and also fabricated metal oxide semiconductor patterns.

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