Journal ArticleDOI
UV-Light-Induced Fluctuation Enhanced Sensing by WO 3 -Based Gas Sensors
Maciej Trawka,Janusz Smulko,Lech Hasse,Claes-Göran Granqvist,Radu Ionescu,Eduard Llobet,Fatima Ezahra Annanouch,Laszlo B. Kish +7 more
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TLDR
In this article, the WO3-based gas sensors were investigated under UV-light irradiation and at different working temperatures with the object of achieving superior sensitivity and selectivity, and the data were taken in synthetic air, ethanol, nitrogen dioxide, and mixtures of these gases.Abstract:
WO3-based gas sensors were investigated under UV-light irradiation and at different working temperatures with the object of achieving superior sensitivity and selectivity. Resistance fluctuations in the WO3 layer were studied together with dc resistance measurements. The data were taken in synthetic air, ethanol, nitrogen dioxide, and mixtures of these gases. We conclude that UV irradiation can easily be applied to enhance the gas sensing properties of a WO3 layer.read more
Citations
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Journal ArticleDOI
Light-Activated Metal Oxide Gas Sensors: A Review
TL;DR: It is pointed out that the main challenge faced by light-activated gas sensors is their low optical response, and the feasibility of using localized surface plasmon resonance to solve this drawback is analyzed.
Journal ArticleDOI
Influence of the addition of nano-TiO2 and ZnO on the sensing performance of micro-ZnSnO3 ethanol sensors under UV illumination
TL;DR: In this paper, a 3D flower-like micro-ZnSnO3 particles were prepared based on ZnSn(OH)6 with less corrosion, and a UVenhanced ethanol-sensing sensor with the nano-TiO2 and ZnO as photosensitive materials were used to decorate micro ZnsnO3 to improve its UV absorption.
Journal ArticleDOI
Enhanced NO2 gas-sensing properties of Au-Ag bimetal decorated MWCNTs/WO3 composite sensor under UV-LED irradiation
Pi-Guey Su,Jia-Hao Yu +1 more
TL;DR: In this article, the effects of Ag, Au and Au-Ag bimetal decoration and under UV-LED irradiation on the response of the Ag/MWCNTs/WO3 composite sensor for sensing NO2 gas were studied.
Journal ArticleDOI
Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges.
TL;DR: In this paper, the photoelectric and optical properties of nanocrystalline oxides SnO2, ZnO, In2O3, and WO3 are presented.
Journal ArticleDOI
Amperometric Biosensor and Front-End Electronics for Remote Glucose Monitoring by Crosslinked PEDOT-Glucose Oxidase
Yana Aleeva,Giovanni Maira,Michelangelo Scopelliti,Vincenzo Vinciguerra,Graziella Scandurra,G. Cannata,Gino Giusi,Carmine Ciofi,Viviana Figa,Luigi Occhipinti,Bruno Pignataro +10 more
TL;DR: In this paper, a planar three-electrode structure on a plastic substrate and a wireless near-field communication-powered electronic system performing sensor analog front-end, A/D conversion, digital control, and display tasks are presented.
References
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Journal ArticleDOI
Gas response control through structural and chemical modification of metal oxide films: state of the art and approaches
TL;DR: In this paper, the structural and physical properties of nanoscaled metal oxide films (SnO2 and In2O3) aimed for solid state chemical sensors were analyzed and the methods suitable for control of these structural-and physical-chemical parameters have been discussed.
Journal ArticleDOI
Extracting information from noise spectra of chemical sensors: single sensor electronic noses and tongues
TL;DR: In this paper, it was shown that even one single sensor may be sufficient for realizing an electronic nose or tongue, which can utilize noise data taken at the output of a chemical sensor.
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NO2-sensing properties of porous WO3 gas sensor based on anodized sputtered tungsten thin film
TL;DR: In this paper, a novel porous WO3 sensor was prepared by anodic oxidation of DC magnetron sputtered metallic tungsten (W) film deposited on alumina substrate.
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Low-level detection of ethanol and H2S with temperature-modulated WO3 nanoparticle gas sensors
Radu Ionescu,Radu Ionescu,Anders Hoel,C. G. Granqvist,Eduard Llobet,Peter Heszler,Peter Heszler +6 more
TL;DR: Low-Level Detection of Ethanol and H2S with Temperature-Modulated WO3 Nanoparticle Gas Sensors as discussed by the authors was the first low-level detection of ethanol and h2S.
Journal ArticleDOI
Single‐Step Deposition of Au‐ and Pt‐Nanoparticle‐Functionalized Tungsten Oxide Nanoneedles Synthesized Via Aerosol‐Assisted CVD, and Used for Fabrication of Selective Gas Microsensor Arrays
Stella Vallejos,Polona Umek,Toni Stoycheva,Fatima Ezahra Annanouch,Eduard Llobet,Xavier Correig,Patrizia De Marco,Carla Bittencourt,Christopher S. Blackman +8 more
TL;DR: In this article, a single-step method via aerosol-assisted chemical vapour deposition, onto microelectromechanical system (MEMS)-based gas-sensor platforms is demonstrated to be an effective route to incorporate metal nanoparticles (NP) or combinations of metal NPs into nanostructured materials, resulting in an attractive way of tuning functionality in metal oxides (MOX).