A SAW Delay-line oscillator as a high-resolution temperature sensor

Neumeister, J.; Thum, R.; Lüder, Ernst

doi:10.1016/0924-4247(89)80055-x

Cited by 24 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For all devices, the temperature effects induced by the coatings exceed by far the thermal drifts of the bare devices. To overcome this drift problem, the most useful approach may be to first measure the temperature-induced frequency functions of the complete sensors, to incorporate additionally excellent temperature sensors such as the 33 MHz TSMR described above, or SAW devices on LiNbO 3 substrates , into the sensing array, and to suppress the temperature-induced contributions mathematically by applying the correction algorithms obtained in the calibration. Alternatively, new methods for SAW sensing, such as reflection techniques, could be applied.…”

Section: Resultsmentioning

confidence: 99%

Performances of Mass-Sensitive Devices for Gas Sensing: Thickness Shear Mode and Surface Acoustic Wave Transducers

et al. 1996

View full text Add to dashboard Cite

In this work we investigated different thickness shear mode resonators (TSMRs) with fundamental frequencies of 10 and 30 MHz and surface acoustic wave devices with fundamental frequencies of 80 and 433 MHz. Four aspects were of primary interest in this comparison: noise levels and signal-to-noise ratios (S/N), influence of the polymer film thickness, influence of temperature on the transducer signal before and after coating, and minimum threshold values for monitoring different volatile organic compounds in the environment. We limited our investigations to a temperature range between 298 and 308 K, with 303 K the routine measuring temperature. Analyte concentrations (n-octane, tetrachloroethene) were chosen from the minimum detection limit up to 5000 μg/L. The temperature was found to strongly affect the performance of all the devices. The sorption of the analyte vapors into the polymeric films was demonstrated to be transducer-independent (identical partition coefficients for all the devices). The 30 MHz TSMRs showed very satisfying results in terms of S/N and limits of detection.

show abstract

Section: Resultsmentioning

confidence: 99%

Performances of Mass-Sensitive Devices for Gas Sensing: Thickness Shear Mode and Surface Acoustic Wave Transducers

et al. 1996

View full text Add to dashboard Cite

show abstract

“…There are several notable factors that influence wave propagation in SAW and among all of them temperature is a critical one. The frequency of an acoustic device changes as a function of temperature which actually sets the foundation for developing SAW temperature sensors [ 34 ]. There have been a number of diverse industrial applications of such sensor systems, for example in high speed/voltage motor engines [ 35 ], metallurgical vessels [ 36 ] and others.…”

Section: Saw Overviewmentioning

confidence: 99%

Surface Acoustic Wave (SAW) for Chemical Sensing Applications of Recognition Layers

Mujahid

Dickert

2017

Sensors

142

View full text Add to dashboard Cite

Surface acoustic wave (SAW) resonators represent some of the most prominent acoustic devices for chemical sensing applications. As their frequency ranges from several hundred MHz to GHz, therefore they can record remarkably diminutive frequency shifts resulting from exceptionally small mass loadings. Their miniaturized design, high thermal stability and possibility of wireless integration make these devices highly competitive. Owing to these special characteristics, they are widely accepted as smart transducers that can be combined with a variety of recognition layers based on host-guest interactions, metal oxide coatings, carbon nanotubes, graphene sheets, functional polymers and biological receptors. As a result of this, there is a broad spectrum of SAW sensors, i.e., having sensing applications ranging from small gas molecules to large bio-analytes or even whole cell structures. This review shall cover from the fundamentals to modern design developments in SAW devices with respect to interfacial receptor coatings for exemplary sensor applications. The related problems and their possible solutions shall also be covered, with a focus on emerging trends and future opportunities for making SAW as established sensing technology.

show abstract

“…Different piezoelectric materials, propagation directions, and cuts all show different temperature dependencies over different range. It is thus possible to engineer that a SAW device has specific temperature characteristics, which has led to the development of several SAW based temperature sensors (D. Hauden et al, 1981;J. Neumeister et al, 1990;M.…”

Section: Characteristics Of One-port Saw Resonatorsmentioning

confidence: 99%

Applied Measurement Systems

Haq¹

2012

View full text Add to dashboard Cite

He is a member of Board of Directors of two government owned companies: Bangladesh Diesel Plant Ltd. (a Commercial Enterprise of Bangladesh Army) and Haripur Thermal Power Plant, as well a member of Steering Committee of Bangladesh National Building Code. Prof. Haq provides consultancy services to various industries and different levels of government. His research and professional interests include the following:

show abstract

A SAW Delay-line oscillator as a high-resolution temperature sensor

Cited by 24 publications

References 1 publication

Performances of Mass-Sensitive Devices for Gas Sensing: Thickness Shear Mode and Surface Acoustic Wave Transducers

Performances of Mass-Sensitive Devices for Gas Sensing: Thickness Shear Mode and Surface Acoustic Wave Transducers

Surface Acoustic Wave (SAW) for Chemical Sensing Applications of Recognition Layers

Applied Measurement Systems

Contact Info

Product

Resources

About