Propagation Characteristics of Surface Acoustic Wave and Properties of Gas Sensors on Quartz

Shen, Chi–Yen; Hsu, Cheng-Liang; Su, Ming-Yau; Tsai, Rume-Tze; Wang, Shih-Han

doi:10.1007/978-90-481-9893-1_27

Cited by 2 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The procedure used to produce the tungsten oxide and tin oxide/PANI solutions was similar to that employed in our previous studies [ 20 , 21 , 22 ]. Tungsten oxide gel was first synthesized and then mixed with an aniline precursor.…”

Section: Methodsmentioning

confidence: 99%

“…Each reflector in the device had 150 Al strip gratings; the metallization ratio was 0.5, and the length of the cavity was 605 μm. The oscillation frequency was measured by the spectrum analyzer (4395A, Agilent, Santa Clara, CA, USA) and was stable at 98.47 MHz after SAW resonator was connected with the oscillator [ 20 ]. The Cu 2+ /PANI/WO 3 sensitive layer was spin coated on the space between the input and output IDTs and covered an area of 1.5 × 0.5 mm 2 .…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

A Room Temperature Nitric Oxide Gas Sensor Based on a Copper-Ion-Doped Polyaniline/Tungsten Oxide Nanocomposite

Wang

Shen

et al. 2015

Sensors

Self Cite

View full text Add to dashboard Cite

The parts-per-billion-level nitric oxide (NO) gas sensing capability of a copper-ion-doped polyaniline/tungsten oxide nanocomposite (Cu2+/PANI/WO3) film coated on a Rayleigh surface acoustic wave device was investigated. The sensor developed in this study was sensitive to NO gas at room temperature in dry nitrogen. The surface morphology, dopant distribution, and electric properties were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy mapping, and Hall effect measurements, respectively. The Cu2+/PANI/WO3 film exhibited high NO gas sensitivity and selectivity as well as long-term stability. At 1 ppb of NO, a signal with a frequency shift of 4.3 ppm and a signal-to-noise ratio of 17 was observed. The sensor exhibited distinct selectivity toward NO gas with no substantial response to O2, NH3 and CO2 gases.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

A Room Temperature Nitric Oxide Gas Sensor Based on a Copper-Ion-Doped Polyaniline/Tungsten Oxide Nanocomposite

Wang

Shen

et al. 2015

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

Gas Sensors- A Review

Yunusa

Hamidon

Kaiser

et al. 2015

J. Environ. Nanotechnol.,

View full text Add to dashboard Cite

In this paper a review of different technologies for gas sensors is presented. The different types of gas sensors technologies including catalytic gas sensor, electrochemical gas sensors, thermal conductivity gas sensor, optical gas sensor and acoustic gas sensor are discussed together with their principle of operation. The Surface Acoustic Wave Gas Sensor technology is discussed in greater detail. The advantages and disadvantages of each sensor technology are also highlighted. All these technologies have been used for several decades for the development of highly sensitive and responsive gas sensors for the detection of flammable and hazardous gases. However, for improved sensitivity and selectivity for these sensors, future trends and outlook for researchers are suggested in the conclusion of this article.

show abstract

Propagation Characteristics of Surface Acoustic Wave and Properties of Gas Sensors on Quartz

Cited by 2 publications

References 16 publications

A Room Temperature Nitric Oxide Gas Sensor Based on a Copper-Ion-Doped Polyaniline/Tungsten Oxide Nanocomposite

A Room Temperature Nitric Oxide Gas Sensor Based on a Copper-Ion-Doped Polyaniline/Tungsten Oxide Nanocomposite

Gas Sensors- A Review

Contact Info

Product

Resources

About