Chemically modified graphene films for high-performance optical NO2 sensors

The Analyst ◽  
2016 ◽  
Vol 141 (15) ◽  
pp. 4725-4732 ◽  
Author(s):  
Fei Xing ◽  
Shan Zhang ◽  
Yong Yang ◽  
Wenshuai Jiang ◽  
Zhibo Liu ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Gas Sensors ◽  
High Performance ◽  
Chemically Modified ◽  
Graphene Films ◽  
Accurate Detection ◽  
Modified Graphene

Various graphene-based gas sensors that operate based on the electrical properties of graphene have been developed for accurate detection of gas components.

A comparative study on simple and practical chemical gas sensors from chemically modified graphene films

2018 ◽  
Vol 6 (1) ◽  
pp. 015607 ◽  
Author(s):  
Pawel S Wrobel ◽  
Michal D Wlodarski ◽  
Anna Jedrzejewska ◽  
Krzysztof M Placek ◽  
Rafal Szukiewicz ◽  
...  
Keyword(s):  
Comparative Study ◽  
Gas Sensors ◽  
Chemically Modified ◽  
Graphene Films ◽  
Modified Graphene

scholarly journals Chemically modified graphene films with tunable negative Poisson’s ratios

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Yeye Wen ◽  
Enlai Gao ◽  
Zhenxing Hu ◽  
Tingge Xu ◽  
Hongbing Lu ◽  
...  
Keyword(s):  
Chemically Modified ◽  
Graphene Films ◽  
Modified Graphene ◽  
Poisson's Ratios ◽  
Poisson’S Ratios

Multifunctional Pristine Chemically Modified Graphene Films as Strong as Stainless Steel

2015 ◽  
Vol 27 (42) ◽  
pp. 6708-6713 ◽  
Author(s):  
Miao Zhang ◽  
Yanlei Wang ◽  
Liang Huang ◽  
Zhiping Xu ◽  
Chun Li ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Chemically Modified ◽  
Graphene Films ◽  
Modified Graphene

High-Performance NO2Sensors Based on Chemically Modified Graphene

2012 ◽  
Vol 25 (5) ◽  
pp. 766-771 ◽  
Author(s):  
Wenjing Yuan ◽  
Anran Liu ◽  
Liang Huang ◽  
Chun Li ◽  
Gaoquan Shi
Keyword(s):  
High Performance ◽  
Chemically Modified ◽  
Modified Graphene

Large-Area Chemically Modified Graphene Films: Electrophoretic Deposition and Characterization by Soft X-ray Absorption Spectroscopy

2009 ◽  
Vol 21 (16) ◽  
pp. 3905-3916 ◽  
Author(s):  
Vincent Lee ◽  
Luisa Whittaker ◽  
Cherno Jaye ◽  
Kristen M. Baroudi ◽  
Daniel A. Fischer ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Electrophoretic Deposition ◽  
Large Area ◽  
X Ray ◽  
Chemically Modified ◽  
Graphene Films ◽  
Modified Graphene ◽  
X Ray Absorption

High-performance shale plugging agent based on chemically modified graphene

2016 ◽  
Vol 32 ◽  
pp. 347-355 ◽  
Author(s):  
An Yuxiu ◽  
Jiang Guancheng ◽  
Qi Yourong ◽  
Huang Xianbin ◽  
Shi He
Keyword(s):  
High Performance ◽  
Agent Based ◽  
Chemically Modified ◽  
Modified Graphene

scholarly journals Optimization of a Low-Power Chemoresistive Gas Sensor: Predictive Thermal Modelling and Mechanical Failure Analysis

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 783 ◽  
Author(s):  
Andrea Gaiardo ◽  
David Novel ◽  
Elia Scattolo ◽  
Michele Crivellari ◽  
Antonino Picciotto ◽  
...  
Keyword(s):  
Low Power ◽  
Failure Analysis ◽  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Mechanical Failure ◽  
Sensing Applications ◽  
Theoretical Approaches ◽  
Sensing Material ◽  
Silicon Bulk

The substrate plays a key role in chemoresistive gas sensors. It acts as mechanical support for the sensing material, hosts the heating element and, also, aids the sensing material in signal transduction. In recent years, a significant improvement in the substrate production process has been achieved, thanks to the advances in micro- and nanofabrication for micro-electro-mechanical system (MEMS) technologies. In addition, the use of innovative materials and smaller low-power consumption silicon microheaters led to the development of high-performance gas sensors. Various heater layouts were investigated to optimize the temperature distribution on the membrane, and a suspended membrane configuration was exploited to avoid heat loss by conduction through the silicon bulk. However, there is a lack of comprehensive studies focused on predictive models for the optimization of the thermal and mechanical properties of a microheater. In this work, three microheater layouts in three membrane sizes were developed using the microfabrication process. The performance of these devices was evaluated to predict their thermal and mechanical behaviors by using both experimental and theoretical approaches. Finally, a statistical method was employed to cross-correlate the thermal predictive model and the mechanical failure analysis, aiming at microheater design optimization for gas-sensing applications.

Dielectric and electrical properties of La@NiO SNPs for high-performance optoelectronic applications

2021 ◽  
Author(s):  
Mohd. Shkir ◽  
Aslam Khan ◽  
Kamlesh V. Chandekar ◽  
M.A. Sayed ◽  
Ahmed Mohamed El-Toni ◽  
...  
Keyword(s):  
Electrical Properties ◽  
High Performance ◽  
Optoelectronic Applications

scholarly journals Enhancing Formaldehyde Selectivity of SnO2 Gas Sensors with the ZSM-5 Modified Layers

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 3947
Author(s):  
Wei Wang ◽  
Qinyi Zhang ◽  
Ruonan Lv ◽  
Dong Wu ◽  
Shunping Zhang
Keyword(s):  
Gas Sensors ◽  
Indoor Air ◽  
High Performance ◽  
Screen Printing ◽  
Gas Sensing ◽  
Oxide Semiconductors ◽  
Screen Printing Method ◽  
Gas Sensing Properties ◽  
Zeolite Films ◽  
Insufficient Knowledge

High performance formaldehyde gas sensors are widely needed for indoor air quality monitoring. A modified layer of zeolite on the surface of metal oxide semiconductors results in selectivity improvement to formaldehyde as gas sensors. However, there is insufficient knowledge on how the thickness of the zeolite layer affects the gas sensing properties. In this paper, ZSM-5 zeolite films were coated on the surface of the SnO2 gas sensors by the screen printing method. The thickness of ZSM-5 zeolite films was controlled by adjusting the numbers of screen printing layers. The influence of ZSM-5 film thickness on the performance of ZSM-5/SnO2 gas sensors was studied. The results showed that the ZSM-5/SnO2 gas sensors with a thickness of 19.5 μm greatly improved the selectivity to formaldehyde, and reduced the response to ethanol, acetone and benzene at 350 °C. The mechanism of the selectivity improvement to formaldehyde of the sensors was discussed.

Sign in / Sign up

Export Citation Format

Share Document