Design, fabrication, and evaluation of high frequency, single-element transducers incorporating different materials

Snook, Kevin; Zhao, J. Z.; Alves, C.H.F.; Cannata, J.M.; Chen, Wo‐Hsing; Meyer, Richard J.; Ritter, Timothy; Shung, K. Kirk

doi:10.1109/58.985701

Cited by 115 publications

(49 citation statements)

References 14 publications

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“…plants, chemical and petrochemical plants and the nuclear sector. The overall performance of these devices in high temperature applications depends greatly on the choice and cut of the piezoelectric material and the metallisation used [1].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of high temperature surface acoustic wave devices for sensor applications

Hamidon

Škarda

White

et al. 2005

Sensors and Actuators A: Physical

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Surface acoustic devices have been shown to be suitable not only for signal processing but also for sensor applications. In this paper high temperature surface acoustic wave devices based on gallium orthophosphate have been fabricated, using a lift-off technique and tested for high frequency applications at temperatures up to 600• C. The measured S-parameter (S 11 ) has been used to study the mass loading effect of the platinum electrodes and turnover temperature of GaPO 4 with a 5• cut. The analysis of these results shows that the mass loading effect can be used to predict the desired resonant frequency of the SAW devices. Also two different adhesion layers for Pt metallisation were studied. Our results show that Zirconium is a more suitable under layer than Titanium.

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Section: Introductionmentioning

confidence: 99%

Fabrication of high temperature surface acoustic wave devices for sensor applications

Hamidon

Škarda

White

et al. 2005

Sensors and Actuators A: Physical

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“…= 0.2) fiber; the output was passed through a ring ultrasonic transducer in order to make the region where the light pulse is emitted and where the acoustic wave is detected the same. The transducer -provided by the NIH Resource Center on Medical Ultrasonic Transducer Technology at USC -is a specialized high-frequency press focused transducer [11][12][13] with a single-element that can produce a spatial resolution of <0.1 mm with a depth sensitivity of > 4 mm [14]. Its main design parameters are the central frequency, the diameter and the focal length.…”

Section: Experimental Methodsmentioning

confidence: 99%

Development of a new pulsed source for photoacoustic imaging based on aperiodically poled lithium niobate

Yankelevich

González

Cudney

et al. 2014

Biomed. Opt. Express

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Abstract:We present the development of a source of deep-red radiation for photoacoustic imaging. This source, which is based on two cascaded wavelength conversion processes in aperiodically poled lithium niobate, emits 10 nanosecond pulses of over 500 µJ at 710 nm. Photoacoustic images were obtained from phantoms designed to mimic the optical and acoustic properties of oral tissue. Results indicate this device is a viable source of optical pulses for photoacoustic applications.

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“…However, owing to the limitations of piezoelectric materials and fabrication techniques, ultrasonic transducers usually have limited bandwidth. Although the maximum bandwidth of a piezoelectric ultrasonic transducer can reach 120% of the center frequency, 37 it is still impossible to achieve a wide range of broadband transducers that can cover from low to high frequencies. Due to the wide band characteristics of optical detectors, it is assumed that optical detection method is used to detect the broadband PA signals achieving high quality PAI.…”

Section: All-optical Pa Detectionmentioning

confidence: 99%

All-optically integrated photoacoustic and optical coherence tomography: A review

Qiao

Chen

2017

J. Innov. Opt. Health Sci.

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All-optically integrated photoacoustic (PA) and optical coherence tomography (OCT) dualmode imaging technology that could o®er comprehensive pathological information for accurate diagnosis in clinic has gradually become a promising imaging technology in the aspect of biomedical imaging during the recent years. This review refers to the technology aspects of alloptical PA detection and system evolution of optically integrated PA and OCT, including Michelson interferometer dual-mode imaging system, Fabry-Perot (FP) interferometer dualmode imaging system and Mach-Zehnder interferometer dual-mode imaging system. It is believed that the optically integrated PA and OCT has great potential applications in biomedical imaging.

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Design, fabrication, and evaluation of high frequency, single-element transducers incorporating different materials

Cited by 115 publications

References 14 publications

Fabrication of high temperature surface acoustic wave devices for sensor applications

Fabrication of high temperature surface acoustic wave devices for sensor applications

Development of a new pulsed source for photoacoustic imaging based on aperiodically poled lithium niobate

All-optically integrated photoacoustic and optical coherence tomography: A review

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