Finite element comparison of single crystal vs. multi-layer composite arrays for medical ultrasound.

Journal Article (Letter)

Finite element (PZFlex; Weidlinger Assoc., New York, NY and Los Altos, CA) simulations predict that for a 2-MHz phased array element with a single matching layer, the three-layer hybrid structure [1] increases the pulse echo signal-to-noise ratio (SNR) by 16 dB over that from a single layer PZT element and -6 dB pulse echo fractional bandwidth from 58% for the PZT element to 75% for the hybrid element. Analogous finite element method (FEM) simulations of single crystal material [lead zinc niobate (PZN)-8% lead titanate (PT)] showed increased SNR by only 3.1 dB, but a -6 dB bandwidth of 108%.

Full Text

Duke Authors

Cited Authors

  • Mills, DM; Smith, SW

Published Date

  • July 2002

Published In

Volume / Issue

  • 49 / 7

Start / End Page

  • 1015 - 1020

PubMed ID

  • 12152937

Electronic International Standard Serial Number (EISSN)

  • 1525-8955

International Standard Serial Number (ISSN)

  • 0885-3010

Digital Object Identifier (DOI)

  • 10.1109/tuffc.2002.1020172


  • eng