Properties of Love waves: applications in sensors

Jakoby, Bernhard; Vellekoop, Michael J.

doi:10.1088/0964-1726/6/6/003

Cited by 207 publications

(122 citation statements)

References 26 publications

Supporting

Mentioning

112

Contrasting

Order By: Relevance

“…The TCF, κ 2 , and S f , have been numerically analyzed for a Love mode waveguide by using the propagator matrix approach [3], [6]. The material parameters and their temperature dependence 3 have been taken from [7]- [9].…”

Section: Discussionmentioning

confidence: 99%

“…The material parameters and their temperature dependence 3 have been taken from [7]- [9]. The analysis has been performed for 25…”

Section: Discussionmentioning

confidence: 99%

“…This equation gives the relationship of S f , to the relative sensitivity of the phase velocity S v , which again contains the dispersion-related correction factor v g /v [3].…”

Section: Theorymentioning

confidence: 99%

“…1(a)]. For a summary of the advantageous properties of Love wave delay lines for liquid sensing applications, see [1]- [3].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Substrates for zero temperature coefficient Love wave sensors

Jakoby

Vellekoop²

2000

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

Abstract-Microacoustic Love wave delay lines show high sensitivity to perturbations such as mass depositions on the wave-guide surface. Furthermore, because of their shear polarization, Love waves are ideally suited for liquid sensing applications. Using a Love wave delay line as feedback element in an oscillator allows the realization of viscosity sensors, and, using a chemical interface, chemical sensors, where the output signal is the oscillation frequency. To achieve a high effective sensitivity, the cross-sensitivity to temperature has to be kept low. We outline the proper choice of a material and especially focus on the influence of crystal cut and the major device design parameters (mass sensitivity and coupling coefficient) on the temperature coefficient of the sensor.

show abstract

Section: Discussionmentioning

confidence: 99%

“…The material parameters and their temperature dependence 3 have been taken from [7]- [9]. The analysis has been performed for 25…”

Section: Discussionmentioning

confidence: 99%

“…This equation gives the relationship of S f , to the relative sensitivity of the phase velocity S v , which again contains the dispersion-related correction factor v g /v [3].…”

Section: Theorymentioning

confidence: 99%

“…1(a)]. For a summary of the advantageous properties of Love wave delay lines for liquid sensing applications, see [1]- [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Substrates for zero temperature coefficient Love wave sensors

Jakoby

Vellekoop²

2000

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

show abstract

“…In addition, the wave guide layer in the Love mode biosensor could, in principle, also protect and insulate the IDT from the liquid media which might otherwise be detrimental to the electrode. Therefore, they are frequently utilized to perform bio-sensing in liquid conditions (Lindner, 2008;Jacoby & Vellekoop, 1997;Bisoffi et al, 2008;Andrä et al, 2008;Moll et al, 2007Moll et al, , 2008Branch & Brozik, 2004;Tamarin et al, 2003;Howe & Harding, 2000), arising as the most promising SGAW device for this purpose due to its high mass sensitivity and electrode isolation characteristics from liquid media (Rocha-Gaso et al, 2009;Francis et al, 2005). The mass sensitivity of LW sensors can be evaluated by different techniques based on incremental modifications of the surface density on the sensing area of the device (Francis et al, 2004).…”

Section: Surface Generated Acoustic Wave Devices (Sgaw)mentioning

confidence: 99%

QCM Technology in Biosensors

Montagut¹,

Narbon²,

Jiménez³

et al. 2011

Biosensors - Emerging Materials and Applications

View full text Add to dashboard Cite

Microacoustic Sensors for Liquid Monitoring

et al. 2001

View full text Add to dashboard Cite

In recent years, much effort has been expended to developing miniaturized, reliable sensors for measuring physical and chemical liquid properties. Microacoustic devices may be employed to determinate physical quantities perturbing the propagation conditions of the acoustic wave, even in liquid environments. For liquid sensors, acoustic modes with shear polarization are often used in order to avoid radiation losses. Examples are shear bulk modes, surface skimming bulk waves, shear-horizontal acoustic plate modes, and Love modes. Furthermore, modes with sagittal polarization may be applied if their phase velocity is sufficiently lower than the sound velocity in the adjacent liquid. General interactions between acoustic waves and liquids are viscous coupling, acoustoelectric effects, and mass loading. The resulting changes in device frequency and attenuation may be utilized for sensing purposes.The general advantages of microacoustic sensors are high sensitivity, simple fabrication, and quasidigital frequency readout. Hence, a wide variety of devices based on different modes for very different applications has been discussed in the relevant literature. The aim of this review is to provide a systematic overview of microacoustic sensors particularlay suited for operation in liquids.First, we provide a brief introductionto surfaceacousticwave devices and the underlying physics, basic microacoustic structures, and general measurement techniques. A description of the mechanisms of interaction between liquids and acoustic waves is then followed by a comprehensive survey covering the different types of microacoustic liquid sensors, with emphasis on the mode-specific device properties. Thereafter, aspects of material selection and device fabrication are summarized. Lastly, an overview is given indicating where microacoustic liquid sensors have already been put into practice and where their application may be expected in the near future.

show abstract

Properties of Love waves: applications in sensors

Cited by 207 publications

References 26 publications

Substrates for zero temperature coefficient Love wave sensors

Substrates for zero temperature coefficient Love wave sensors

QCM Technology in Biosensors

Microacoustic Sensors for Liquid Monitoring

Contact Info

Product

Resources

About