The role of piezocomposites in ultrasonic transducers
- 13 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 1, 755-766
- https://doi.org/10.1109/ultsym.1989.67088
Abstract
Combining a piezoelectric ceramic and a passive polymer to form a piezocomposite allows the transducer engineer to design new piezoelectrics that offer substantial advantages over the conventional piezoelectric ceramics and polymers. The rod composite geometry provides materials with enhanced electromechanical coupling and with acoustic impedance close to that of tissue; these factors yield transducers for medical ultrasonic imaging with high sensitivity and compact impulse response. The dice-and-fill technique produces piezocomposites that can be readily formed into complex shapes to facilitate focusing the ultrasonic beam. Proper design of the rod spacing yields materials that exhibit low crosstalk between array elements formed by patterning the electrode alone, without cutting between the elements. In this way, curved annular arrays have been made that provide high-quality clinical images of substantial diagnostic value to physicians. Included is an extensive bibliography of papers documenting the role of piezocomposites in ultrasonic imaging transducers.<>Keywords
This publication has 77 references indexed in Scilit:
- The role of piezocomposites in ultrasonic transducersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- A multifrequency composite ultrasonic transducer systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- A complete finite element-eigenmode analysis for a 1-3 type of piezoelectric composite transducer including the effect of fluid loading and internal lossesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- On the acoustic efficiency of 1–3 pzt-polymer piezoelectric compositesFerroelectrics, 1989
- Excimer-laser-induced etching of ceramic PbTi1−xZrxO3Journal of Applied Physics, 1987
- Finite Element Method Analysis of Dispersion Characteristics for 1-3 Type Piezoelectric CompositesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1987
- Author indexPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1987
- Piezoelectric Composite Materials for Ultrasonic Transducer Applications. Part II: Evaluation of Ultrasonic Medical ApplicationsIEEE Transactions on Sonics and Ultrasonics, 1985
- Piezoelectric Composite Materials for Ultrasonic Transducer Applications. Part I: Resonant Modes of Vibration of PZT Rod-Polymer CompositesIEEE Transactions on Sonics and Ultrasonics, 1985
- A New Technique for Realizing Annular Arrays or Complex Shaped TransducersPublished by Springer Nature ,1984