Effect of Carrier Gas on Sensitivity of Surface Acoustic Wave Detector

Kumar, Jitender; Nimal, A.T.; Mittal, Upendra; Kumar, Vinod; Singh, Vinay Kumar

doi:10.1109/jsen.2022.3162072

Cited by 3 publications

(3 citation statements)

References 34 publications

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“…The system, combined with PCA, could identify high and sub-ppm concentrations of gases, which provided a novel method for identifying compounds. In 2022, Kumar et al [ 53 ] investigated the impact of carrier gas on detecting sensitivity by combining gas chromatography with a SAW sensor; they used H 2 , He, N 2 , and air as carrier gases for the detection of CEES, DMMP, diethyl cyanophosphonate, and triethyl phosphate, as well as methanol, toluene, and xylene. The experiments revealed that higher sensitivity could be obtained with H 2 as the carrier gas in detecting all target gases (H 2 > He > air > N 2 ); therefore, it was judged that the sensitivity was affected by the density of the carrier gas.…”

Section: Sensitive Functional Materials Of Sulfur-containing Agents A...mentioning

confidence: 99%

Sensitive Materials Used in Surface Acoustic Wave Gas Sensors for Detecting Sulfur-Containing Compounds

Wang,

Yan,

Liang

et al. 2024

Polymers

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There have been many studies on surface acoustic wave (SAW) sensors for detecting sulfur-containing toxic or harmful gases. This paper aims to give an overview of the current state of polymer films used in SAW sensors for detecting deleterious gases. By covering most of the important polymer materials, the structures and types of polymers are summarized, and a variety of devices with different frequencies, such as delay lines and array sensors for detecting mustard gas, hydrogen sulfide, and sulfur dioxide, are introduced. The preparation method of polymer films, the sensitivity of the SAW gas sensor, the limit of detection, the influence of temperature and humidity, and the anti-interference ability are discussed in detail. The advantages and disadvantages of the films are analyzed, and the potential application of polymer films in the future is also forecasted.

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Section: Sensitive Functional Materials Of Sulfur-containing Agents A...mentioning

confidence: 99%

Sensitive Materials Used in Surface Acoustic Wave Gas Sensors for Detecting Sulfur-Containing Compounds

Wang,

Yan,

Liang

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

“…The traditional IDT adopts uniform single-electrode interdigital transducers, which means the width of the electrode is equal to the spacing of the electrode, as shown in Figure 2(a). However, this design method will cause the IDT to produce a second-order effect [17]. That is, it will make the marginal reflection of the IDT accumulate, thus increasing the sidelobes of the SAW sensor.…”

Section: Principle Of Temperature Compensation For Saw Winding Tensio...mentioning

confidence: 99%

“…The surface acoustic wave (SAW) device has been widely used in mechanical engineering, aeronautics and astronautics, signal processing [13], nondestructive testing, sensor technology, and so on [14], and as important sensing technologies, SAW sensors have exhibited promising characteristics because of their high sensitivity, fast response, excellent specificity, reversibility, battery-powered operation, small size, and low cost, thus offering extensive potential use in the future [15]. The SAW sensors can be used to measure temperature [16], humidity [17], gas [18], force [19], and so on.…”

Section: Introductionmentioning

confidence: 99%

Temperature Compensation of SAW Winding Tension Sensor Based on PSO-LSSVM Algorithm

Feng,

Liu,

et al. 2023

Micromachines

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In this paper, a SAW winding tension sensor is designed and data fusion technology is used to improve its measurement accuracy. To design a high-measurement precision SAW winding tension sensor, the unbalanced split-electrode interdigital transducers (IDTs) were used to design the input IDTs and output IDTs, and the electrode-overlap envelope was adopted to design the input IDT. To improve the measurement accuracy of the sensor, the particle swarm optimization-least squares support vector machine (PSO-LSSVM) algorithm was used to compensate for the temperature error. After temperature compensation, the sensitivity temperature coefficient αs of the SAW winding tension sensor was decreased by an order of magnitude, thus significantly improving its measurement accuracy. Finally, the error with actually applied tension was calculated, the same in the LSSVM and PSO-LSSVM. By multiple comparisons of the same sample data set overall, as well as the local accuracy of the forecasted results, which is 5.95%, it is easy to confirm that the output error predicted by the PSO-LSSVM model is 0.50%, much smaller relative to the LSSVM’s 1.42%. As a result, a new way for performing data analysis of the SAW winding tension sensor is provided.

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AlN/Sapphire-Based SAW Resonators With Q Over 10000 for Temperature Sensors

Lv²,

Huang

et al. 2023

IEEE Sensors J.

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Effect of Carrier Gas on Sensitivity of Surface Acoustic Wave Detector

Cited by 3 publications

References 34 publications

Sensitive Materials Used in Surface Acoustic Wave Gas Sensors for Detecting Sulfur-Containing Compounds

Sensitive Materials Used in Surface Acoustic Wave Gas Sensors for Detecting Sulfur-Containing Compounds

Temperature Compensation of SAW Winding Tension Sensor Based on PSO-LSSVM Algorithm

AlN/Sapphire-Based SAW Resonators With Q Over 10000 for Temperature Sensors

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