Sensors based on piezoelectric resonators

Benes, E.; Gröschl, Martin; Bürger, Wolfgang; Schmid, Michael

doi:10.1016/0924-4247(95)00846-2

Cited by 293 publications

(116 citation statements)

References 60 publications

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“…This effect has been used to make mass sensors for measuring the density and thickness of the layer. These mass sensors are called quartz crystal microbalances (QCMs) and have important applications in monitoring thin film deposition and in chemical and biological sensing [6].…”

Section: Introductionmentioning

confidence: 99%

Effects of mass layer dimension on a finite quartz crystal microbalance

Kong

Liu

et al. 2011

Acta Mech

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In this paper, we investigate free thickness-shear and thickness-twist vibrations of a finite crystal resonator of AT-cut quartz carrying a thin mass layer at the central portion of its top surface operating as a quartz crystal microbalance. The equations of anisotropic elasticity are used with the omission of the small elastic constant c 56 . An analytical solution is obtained using Fourier series from which the resonant frequencies, mode shapes and vibration confinement by the mass layer are calculated and examined.

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Section: Introductionmentioning

confidence: 99%

Effects of mass layer dimension on a finite quartz crystal microbalance

Kong

Liu

et al. 2011

Acta Mech

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“…For example, most film-coated QCM devices must have specified dimensions so that a resonant bulk acoustic wave Sensors and Actuators B 82 (2002) can be maintained in the quartz crystal transducer element [15,16]. Similarly, the geometry of SAW devices is constrained by the need to sustain a Rayleigh wave of the appropriate resonant frequency at the surface of the transducer crystal [15]. Each detector in a QCM or SAW array typically has an identical area and form factor; consequently, the array response is based solely on the different polymer/analyte sorption properties of the differing detector films.…”

Section: Introductionmentioning

confidence: 99%

Exploitation of spatiotemporal information and geometric optimization of signal/noise performance using arrays of carbon black-polymer composite vapor detectors

Briglin

Freund

Tokumaru

et al. 2002

Sensors and Actuators B: Chemical

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We have investigated various aspects of the geometric and spatiotemporal response properties of an array of sorption-based vapor detectors. The detectors of specific interest are composites of insulating organic polymers filled with electrical conductors, wherein the detector film provides a reversible dc electrical resistance change upon the sorption of an analyte vapor. An analytical expression derived for the signal/noise performance as a function of detector volume implies that there is an optimum detector film volume which will produce the highest signal/noise ratio for a given carbon black-polymer composite when exposed to a fixed volume of sampled analyte. This prediction has been verified experimentally by exploring the response behavior of detectors having a variety of different geometric form factors. We also demonstrate that useful information can be obtained from the spatiotemporal response profile of an analyte moving at a controlled flow velocity across an array of chemically identical, but spatially nonequivalent, detectors. Finally, we demonstrate the use of these design principles, incorporated with an analysis of the changes in detector signals in response to variations in analyte flow rate, to obtain useful information on the composition of analytes and analyte mixtures. #

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“…These papers reviewed piezoelectric sensors based on quartz crystals and lead-based ceramics [6,16,17], and the key features of well-known piezoelectric sensor designs were introduced as well as the associated applications. Typical sensor configurations such as piezoelectric bars, disks, cylinders, spheres, and benders were studied for hydrophones, accelerometers, and bio-sensors [17].…”

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confidence: 99%

Relaxor-PT Single Crystal Piezoelectric Sensors

Jiang

Kim

2014

Crystals

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Relaxor-PbTiO 3 piezoelectric single crystals have been widely used in a broad range of electromechanical devices, including piezoelectric sensors, actuators, and transducers. This paper reviews the unique properties of these single crystals for piezoelectric sensors. Design, fabrication and characterization of various relaxor-PT single crystal piezoelectric sensors and their applications are presented and compared with their piezoelectric ceramic counterparts. Newly applicable fields and future trends of relaxor-PT sensors are also suggested in this review paper.

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Sensors based on piezoelectric resonators

Cited by 293 publications

References 60 publications

Effects of mass layer dimension on a finite quartz crystal microbalance

Effects of mass layer dimension on a finite quartz crystal microbalance

Exploitation of spatiotemporal information and geometric optimization of signal/noise performance using arrays of carbon black-polymer composite vapor detectors

Relaxor-PT Single Crystal Piezoelectric Sensors

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