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
Language
- eng