High-overtone self-focusing acoustic transducer for high frequency ultrasonic imaging

Hongyu Yu, Chuang Yuan Lee, Eun Sok Kim, Dawei Wu, Qifa Zhou, K. Kirk Shung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper reports the use of high-overtone selffocusing acoustic transducers for high frequency ultrasonic imaging application. For an acoustic transducers working for ultrasonic imaging, the resolution is primarily determined by the acoustic wavelength, which is normally proportional to the piezoelectric substrate thickness. Using a harmonic frequency of a bulk PZT with a novel Fresnel lens based on air-reflectors for a focused acoustic beam, we reduce the wavelength and obtain strong signals at the center frequencies of the 3rd (60MHz) and 5th (100MHz) harmonics for ultrasonic imaging. The bandwidth at -6dB was over 20 %, even without a front matching layer.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE Ultrasonics Symposium
Pages2401-2404
Number of pages4
DOIs
StatePublished - 2007
Externally publishedYes
Event2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States
Duration: Oct 28 2007Oct 31 2007

Other

Other2007 IEEE Ultrasonics Symposium, IUS
CountryUnited States
CityNew York, NY
Period10/28/0710/31/07

Fingerprint

Acoustic transducers
Ultrasonic imaging
Acoustics
Wavelength
Lenses
Bandwidth
Substrates
Air

Keywords

  • Component
  • Harmonic
  • Leadzirconate titanate (PZT)
  • Self-focusing acoustic transducers
  • Ultrasonic imaging

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Yu, H., Lee, C. Y., Kim, E. S., Wu, D., Zhou, Q., & Shung, K. K. (2007). High-overtone self-focusing acoustic transducer for high frequency ultrasonic imaging. In Proceedings - IEEE Ultrasonics Symposium (pp. 2401-2404). [4410177] https://doi.org/10.1109/ULTSYM.2007.604

High-overtone self-focusing acoustic transducer for high frequency ultrasonic imaging. / Yu, Hongyu; Lee, Chuang Yuan; Kim, Eun Sok; Wu, Dawei; Zhou, Qifa; Shung, K. Kirk.

Proceedings - IEEE Ultrasonics Symposium. 2007. p. 2401-2404 4410177.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yu, H, Lee, CY, Kim, ES, Wu, D, Zhou, Q & Shung, KK 2007, High-overtone self-focusing acoustic transducer for high frequency ultrasonic imaging. in Proceedings - IEEE Ultrasonics Symposium., 4410177, pp. 2401-2404, 2007 IEEE Ultrasonics Symposium, IUS, New York, NY, United States, 10/28/07. https://doi.org/10.1109/ULTSYM.2007.604
Yu H, Lee CY, Kim ES, Wu D, Zhou Q, Shung KK. High-overtone self-focusing acoustic transducer for high frequency ultrasonic imaging. In Proceedings - IEEE Ultrasonics Symposium. 2007. p. 2401-2404. 4410177 https://doi.org/10.1109/ULTSYM.2007.604
Yu, Hongyu ; Lee, Chuang Yuan ; Kim, Eun Sok ; Wu, Dawei ; Zhou, Qifa ; Shung, K. Kirk. / High-overtone self-focusing acoustic transducer for high frequency ultrasonic imaging. Proceedings - IEEE Ultrasonics Symposium. 2007. pp. 2401-2404
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