High-overtone self-focusing acoustic transducers for high-frequency ultrasonic Doppler

Jie Zhu, Chuangyuan Lee, Eun Sok Kim, Dawei Wu, Changhong Hu, Qifa Zhou, K. Kirk Shung, Gaofeng Wang, Hongyu Yu

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

This work reports the potential use of high-overtone self-focusing acoustic transducers for high-frequency ultrasonic Doppler. By using harmonic frequencies of a thick bulk Lead Zirconate Titanate (PZT) transducer with a novel air-reflector Fresnel lens, we obtained strong ultrasound signals at 60 MHz (3rd harmonic) and 100 MHz (5th harmonic). Both experimental and theoretical analysis has demonstrated that the transducers can be applied to Doppler systems with high frequencies up to 100 MHz.

Original languageEnglish (US)
Pages (from-to)544-547
Number of pages4
JournalUltrasonics
Volume50
Issue number6
DOIs
StatePublished - May 2010

Keywords

  • Acoustic transducer
  • Air-reflector
  • Doppler
  • Self-focusing

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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