Acoustic sensors based on surface-localized HPSWs for measurements in liquids

Drobe, H.; Leidl, Anton; Rost, Marcel J.; Ruge, Ingolf

doi:10.1016/0924-4247(93)80026-d

Cited by 28 publications

(12 citation statements)

References 19 publications

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“…These conditions are met by some cuts of YZ' quartz [44], YX lithium tantalate [14,28,45], and YX lithium niobate (see Section 2.1.4.1).…”

Section: Sensors Using Ssbw Sh-saw and Leaky Wavesmentioning

confidence: 99%

“…It can be seen that the strength of interaction can be enhanced by increasing the frequency x 2pf. Furthermore, devices with SSBW or leaky waves can be used for viscosity sensors [13,44]. The increase in the propagation loss PL and the decrease in the frequency f depend on the density q and viscosity g of a surrounding liquid [48]: …”

Section: Sensors Using Ssbw Sh-saw and Leaky Wavesmentioning

confidence: 99%

See 1 more Smart Citation

Microacoustic Sensors for Liquid Monitoring

et al. 2001

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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.

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“…These conditions are met by some cuts of YZ' quartz [44], YX lithium tantalate [14,28,45], and YX lithium niobate (see Section 2.1.4.1).…”

Section: Sensors Using Ssbw Sh-saw and Leaky Wavesmentioning

confidence: 99%

Section: Sensors Using Ssbw Sh-saw and Leaky Wavesmentioning

confidence: 99%

Microacoustic Sensors for Liquid Monitoring

et al. 2001

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“…The wave energy radiates into the aqueous bulk due to the perpendicular displacement of the wave propagation in aqueous environment. This causes a high attenuation of the received signal, which hinders the application transferred into a biosensor [4,21,22]. The shear-horizontal (SH) surface wave, generally referred to as a Love wave, is generated using a deposited elastic layer to guide the direction of the acoustic resonance.…”

Section: Types Of Biosensorsmentioning

confidence: 99%

Interfacial Structures and Properties of Organic Materials for Biosensors: An Overview

Zhou

Chiu

Liang

2012

Sensors

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The capabilities of biosensors for bio-environmental monitoring have profound influences on medical, pharmaceutical, and environmental applications. This paper provides an overview on the background and applications of the state-of-the-art biosensors. Different types of biosensors are summarized and sensing mechanisms are discussed. A review of organic materials used in biosensors is given. Specifically, this review focuses on self-assembled monolayers (SAM) due to their high sensitivity and high versatility. The kinetics, chemistry, and the immobilization strategies of biomolecules are discussed. Other representative organic materials, such as graphene, carbon nanotubes (CNTs), and conductive polymers are also introduced in this review.

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“…[7][8][9] SAW biosensors still need to be developed and improved in order to detect micro-level information required by biomedicine. 8 Drobe et al 10 and Leidl et al 11 adopted delayed horizontally polarized shear wave devices in the early development of biosensors, which were successfully applied in oils and non-polarized liquids, but could not be achieved in other solutions and the signal attenuation was very large. Smith et al 12 designed a piezoelectric transducer model based on onedimensional for series inductance-tuned transducers, and then several piezoelectric materials with the best aperture and the best number of digital cycles were listed to minimize the insertion loss and phase dispersion and maximize the bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Structural optimization and analysis of surface acoustic wave biosensor based on numerical method

Zhou

Tan

Zhang

et al. 2019

International Journal of Distributed Sensor Networks

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The biosensor based on surface acoustic wave is of great significance for the application of biological clinical detection, but the sensitivity and specificity of surface acoustic wave biosensor still need to be improved. In this article, the structure of surface acoustic wave biosensor and interdigital transducer is designed by studying the theoretical model of surface acoustic wave biosensor. Then the amplitude–frequency response of the device is studied. Later, the simulation model of surface acoustic wave biosensor structure is established, and the performance of surface acoustic wave device is numerically calculated. Meanwhile, the relationship between the applied excitation signal and the resonant frequency is considered, and the performance of the surface wave propagation and attenuation characteristics are analyzed. In addition, the influence of the material of the piezoelectric substrate and the structure of the interdigitated electrode on the surface acoustic wave propagation are studied. The response potential curve and the total displacement of the particle vibration are analyzed, and the structure of the surface acoustic wave device is optimized.

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Acoustic sensors based on surface-localized HPSWs for measurements in liquids

Cited by 28 publications

References 19 publications

Microacoustic Sensors for Liquid Monitoring

Microacoustic Sensors for Liquid Monitoring

Interfacial Structures and Properties of Organic Materials for Biosensors: An Overview

Structural optimization and analysis of surface acoustic wave biosensor based on numerical method

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