Title :
Advanced piezoelectric materials for medical ultrasound transducers
Author :
Hackenberger, Wesley ; Rehrig, Paul W. ; Ritter, Timothy ; Shrout, Thomas
Author_Institution :
TRS Ceramics, Inc, State College, PA, USA
Abstract :
A number of materials have recently been developed specifically for advanced ultrasound applications. These are high-density ceramics, fine grain ceramics, high dielectric constant ceramics, and single crystal piezoelectrics. Improvements in properties resulting from these materials range from greater strength and improved machinability to increased transducer element capacitance and coupling. The resulting transducer advances include high frequency arrays (⟩20MHz), high sensitivity 1.5 and 2-D phased arrays, and broadband (⟩100%) arrays
Keywords :
biomedical ultrasonics; grain size; mechanical strength; permittivity; piezoceramics; piezoelectric materials; ultrasonic transducer arrays; 20 MHz; 2D phased arrays; advanced piezoelectric materials; broadband arrays; fine grain ceramics; high dielectric constant ceramics; high frequency arrays; high sensitivity arrays; high-density ceramics; machinability; material strength; medical US transducers; medical ultrasound transducers; single crystal piezoelectrics; transducer element capacitance; transducer element coupling; Bioceramics; Biomedical transducers; Crystalline materials; Dielectric materials; High-K gate dielectrics; Phased arrays; Piezoelectric materials; Piezoelectric transducers; Ultrasonic imaging; Ultrasonic transducers;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.991911
