Abstract
Single element transducers were designed and built using shell sections of piezoelectric hollow spheres. The shell sections provide inherent focal depths and allow for the easy production of low f-number transducers. Because of the low f-numbers, these transducers have improved lateral resolution compared to other transducers operating at the same frequency. Spheres were mass-produced using the sacrificial core technique and had diameters of 1-3 mm and wall thickness from 20 to 120 μm. The lead titanate transducers described here had thickness mode resonance frequencies ranging from 25 MHz to 70 MHz. Electromechanical properties and pulse-echo response of these transducers were evaluated. Skin images taken with an Ultrasonic Backscatter Microscope at 55 MHz are also presented.
Original language | English (US) |
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Pages | 741-744 |
Number of pages | 4 |
State | Published - 2000 |
Event | 12th IEEE International Symposium on Applications of Ferroelectrics - Honolulu, HI, United States Duration: Jul 21 2000 → Aug 2 2000 |
Other
Other | 12th IEEE International Symposium on Applications of Ferroelectrics |
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Country/Territory | United States |
City | Honolulu, HI |
Period | 7/21/00 → 8/2/00 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering