The investigation of hydrogen gas sensing properties of SAW gas sensor based on palladium surface modified SnO 2 thin film

Yang, Lijun; Yin, Chenbo; Zhang, Zili; Zhou, Jie; Xu, Huifang

doi:10.1016/j.mssp.2016.11.042

Cited by 62 publications

(34 citation statements)

References 44 publications

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“…In the past decade, considerable attention has been paid to SAW gas sensors by utilizing a variety of materials as sensing layers, such as polymers [8][9][10], metal oxides and its nanostructures [11][12][13][14][15] and various carbon-based nanomaterials (e.g.,…”

Section: Introductionmentioning

confidence: 99%

Colloidal quantum dot-based surface acoustic wave sensors for NO2-sensing behavior

Kan

Chen

et al. 2019

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

Colloidal quantum dot-based surface acoustic wave sensors for NO2-sensing behavior

Kan

Chen

et al. 2019

Sensors and Actuators B: Chemical

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“…Surface acoustic wave (SAW) sensors have been widely used as hydrogen sensors due to advantages such as high sensitivity, fast response, reliability, and low cost [ 6 , 7 , 8 ]. Detection limits for H 2 gas of 1250 to 2000 ppm (operating temperatures 80–120 °C) [ 9 ], 600 ppm (at 80 °C) [ 10 ] or as low as 200 ppm (at 175 °C) [ 11 ] using SAW sensors have been reported. In SAW sensors, the sensing mechanism is based on the perturbation of the surface acoustic wave propagation by mechanical and/or electrical effects.…”

Section: Introductionmentioning

confidence: 99%

Surface Acoustic Wave Sensor with Pd/ZnO Bilayer Structure for Room Temperature Hydrogen Detection

Viespe

Miu

2017

Sensors

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A Surface Acoustic Wave (SAW) hydrogen sensor with a Pd/ZnO bilayer structure for room temperature sensing operation has been obtained by Pulsed Laser Deposition (PLD). The sensor structure combines a Pd layer with optimized porosity for maximizing mass effects, with the large acoustoelectric effect at the Pd/ZnO interface. The large acoustoelectric effect is due to the fact that ZnO has a surface conductivity which is highly sensitive to chemisorbed gases. The sensitivity of the sensor was determined for hydrogen concentrations between 0.2% and 2%. The limit of detection (LOD) of the bilayer sensor was about 4.5 times better than the single ZnO films and almost twice better than single Pd films.

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“…A piezoelectric microcantilever in resonating mode, which shifts its resonance frequency due to mass loading, has shown high sensitivity for chemicals and has potential application related to artificial noses (75). For example, piezoelectric substrate modified with SnO2 thin films was used for development hydrogen gas surface acoustic wave (SAW) sensors (76). In this study, enhancement of the sensor performance was proceed by creating bi-layer sensing film made from SnO2 and highly dispersed palladium nanoparticle layers.…”

Section: Conventional and Biosensor Techniques For Indoor Pollutant Dmentioning

confidence: 99%

Indoor air pollution and the contribution of biosensors

Eltzov

Cesarea²,

Low

et al. 2019

The EuroBiotech Journal

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A vast majority of people today spend more time indoors than outdoors. However, the air quality indoors may be as bad as or even worse than the air quality outside. This is due to the continuous circulation of the same air without proper ventilation and filtration systems, causing a buildup of pollutants. As such, indoor air quality monitoring should be considered more seriously. Indoor air quality (IAQ) is a measure of the air quality within and around buildings and relates to the health and comfort of building occupants. To determine the IAQ, computer modeling is done to simulate the air flow and human exposure to the pollutant. Currently, very few instruments are available to measure the indoor air pollution index. In this paper, we will review the list of techniques available for measuring IAQ, but our emphasis will be on indoor air toxicity monitoring.

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The investigation of hydrogen gas sensing properties of SAW gas sensor based on palladium surface modified SnO 2 thin film

Cited by 62 publications

References 44 publications

Colloidal quantum dot-based surface acoustic wave sensors for NO2-sensing behavior

Colloidal quantum dot-based surface acoustic wave sensors for NO2-sensing behavior

Surface Acoustic Wave Sensor with Pd/ZnO Bilayer Structure for Room Temperature Hydrogen Detection

Indoor air pollution and the contribution of biosensors

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