An experimental study on micro-gas sensors with strip shape tin oxide thin films

Yu, Jun; Tang, Zhenan; Yan, Guizhen; Chan, Peggy; Huang, Zheng Xing

doi:10.1016/j.snb.2009.03.033

Cited by 13 publications

(3 citation statements)

References 15 publications

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“…Take the binary gas mixture of methane and ethylene as the identify object, variance analysis and principal component analysis are combined to select the optimized sensor array (TGS2611, TGS2620, TGS813). The response from the sensor array to the gas mixture samples are harvested from the automatic gas testing system [16]. We gathered 96 groups of data and chose 66 groups response for training samples randomly, the rest for testing sample.…”

Section: The Identification Of Binary Mixturementioning

confidence: 99%

Gas Mixture Recognition Method with New Hybrid Architecture

Zhang

Wei

et al. 2010

AMM

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The quantification accuracy of the gas mixture recognizing is greatly dependent on the gas sensor array signal processing method. The paper reports the new hybrid architecture with two main stages for gas mixture recognition. The first stage combine the principal component analysis (PCA) and back propagation neural network (BPNN) to qualitative identify the gas mixture, and the second stage composed of the independent component analysis (ICA) and BP sub networks to quantify the gas concentrations. The hybrid architecture and three other commonly used methods of PCA+BPNN, ICA+BPNN, and ICA+BP sub networks were respectively applied in binary gas mixture quantification based on the same gas sensor array, and results show that the hybrid architecture has the lowest quantitative recognition errors and fast converge speed comparing with the other methods.

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Section: The Identification Of Binary Mixturementioning

confidence: 99%

Gas Mixture Recognition Method with New Hybrid Architecture

Zhang

Wei

et al. 2010

AMM

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“…Metal oxides such as Ga2O3, ZnO, SnO2, WO3, CuO, ZrO2, etc. have attracted great deal of interest as their electrical and optical characteristics get changes on the exposure of reducing or oxidizing gases [2][3][4][5][6][7][8]. Metal oxide thick films offer good possibilities in tailoring the gas response and selective nature of the gas sensors, by changing the various parameters.…”

Section: Introductionmentioning

confidence: 99%

Heterostructured Ga2O3-Activated Bi2O3 Sensors for Chlorine Monitoring

Patil¹,

Patil²,

Patil³

et al. 2022

IJRMST

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The nanocrystalline Bi2O3 powder was synthesized by ultrasonicated microwave irradiation by employing centrifugation technique at all normal conditions. Fabrication of thick films of pure Bi2O3 powder was made by screen printing and firing at 400oC for 30 min. Surface activations of the films involved the dipping of pure films into 0.01M aqueous solution of Gallium Nitrate for different intervals of time. The morphologies, surface topographies, constituents of elements present in the synthesized materials and crystallographic structures of the pure and surface activated films have been investigated by XRD, FE-SEM, E-DAX, etc. It has been investigated that, the Ga2O3 activated Bi2O3 (30 min) sample exhibits crucial response to 20 ppm Cl2 gas at 250oC. Electrical and gas monitoring performance of thick films of pure and activated Bi2O3 have been studied and discussed.

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“…Thin-film gas sensors tend to deteriorate with an increase in cracks for SnO 2 -based [1][2] and WO 3 -based films [3]. These cracks are usually generated perpendicular to the surface of the sensing film by the difference of the thermal expansion coefficients between the sensing film and the substrate.…”

Section: Introductionmentioning

confidence: 99%

7.3.4 Thin-Film Gas Sensors Operating in a Perpendicular Current Mode

Ishikawa¹,

Hara

2012

Proceedings IMCS 2012

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Thin-film gas sensors operating in a perpendicular current mode are presented. To achieve this mode, a mesh-like top electrode is deposited on a sensing film instead of an electrode that is normally deposited on a substrate. The sensor current flows perpendicularly to the surface of the thin film and thus is not blocked by the cracks that are generated by an annealing process after deposition and by the difference of the thermal expansion coefficients between the sensing film and the substrate. The sensor is expected to work for a longer period of time without possible deterioration caused by cracks. Moreover, the mesh-like top electrode enhances the sensitivity to hydrogen by acting as a catalyst when Pt is used for the top electrode.

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An experimental study on micro-gas sensors with strip shape tin oxide thin films

Cited by 13 publications

References 15 publications

Gas Mixture Recognition Method with New Hybrid Architecture

Gas Mixture Recognition Method with New Hybrid Architecture

Heterostructured Ga2O3-Activated Bi2O3 Sensors for Chlorine Monitoring

7.3.4 Thin-Film Gas Sensors Operating in a Perpendicular Current Mode

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