Development of novel (2-2) piezoelectric composites by direct-write technique

• Published in: 2008 17th IEEE International Symposium on the Applications of Ferroelectrics Vol. 3; pp. 1 - 2
• Main Authors: Sun, J., Akdogan, E.K., Vittadello, M., Safari, A.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-02-2008
• Subjects: Bioceramics; Biomedical transducers; Ceramics; Dielectric losses; Frequency; Impedance; Laboratories; Polymers; Sun; Writing
• ISBN: 9781424427444; 1424427444
• ISSN: 1099-4734; 2375-0448
• DOI: 10.1109/ISAF.2008.4693826

The Micropen™ direct-write technique was used to fabricate ceramic skeletal structures to develop ceramic/polymer (2-2) composites for high frequency transducers in medical imaging applications. Both regular and volume fraction gradient (VFG) patterns were designed. By this approach, transducers were fabricated with 1 cm 2 transduction area, operating at 4-5 MHz. The composites had ~30 vol% of ceramic, with thickness ranging 290 to 380 μm. They had a dielectric loss of 2.0-2.1%, a dielectric constant of 500-670, a d33 of 190, and kt of 56%-61%.