Design and Manufacture of Surface Acoustic Wave Sensors for Real-Time Weigh-in-Motion

Geraghty, Dermot; O’Mahony, Margaret

doi:10.1109/imtc.2005.1604370

Cited by 3 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been used as sensors for temperature, pressure, traces of vapor and gases [1][2][3][4][5][6] as well as filters and resonators in communication systems [7]. Typically the SAW is generated and detected with inter-digital transducers (IDT) on piezoelectric substrate.…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of SAW delay line for corrosion detection

Malik

Iqbal

Burhanudin

2011

2011 International Conference on Electronic Devices, Systems and Applications (ICEDSA)

View full text Add to dashboard Cite

Surface acoustic wave (SAW) delay line with two Interdigital Transducers (IDTs) and an intermediate metal sensing element is proposed to detect and monitor corrosion. Generation and detection of SAW on ST cut Quartz piezoelectric substrate are made using platinum (Pt) IDTs. The SAW, then travels in between the IDTs underneath a sensing element made of iron (Fe). The device parameters like central frequency, number of finger pairs, finger width and spacing are designed and simulated using impulse response model. The frequency response of the device is then simulated and analysed using coupling-of-mode model. It is found that, by thinning the sensing element, the phase shift increases and become more significant when the thickness of sensing element is below 300 nm. Since corrosion can be regarded as thinning of a metallic element, the results suggest that it is feasible to develop a SAW based sensor for corrosion detection.

show abstract