Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16488
Title: Lead-free piezoelectric single crystal based 1-3 composites for ultrasonic transducer applications
Authors: Zhou, D
Lam, KH
Chen, Y
Zhang, Q
Chiu, YC
Luo, H
Dai, J 
Chan, HLW 
Keywords: 1-3 composite
Lead-free
NBT-BT single crystal
Ultrasonic transducer
Issue Date: 2012
Publisher: Elsevier
Source: Sensors and actuators. A, Physical, 2012, v. 182, p. 95-100 How to cite?
Journal: Sensors and actuators. A, Physical 
Abstract: In this work, lead-free 1-3 composites based on piezoelectric 0.947Na 0.5Bi 0.5TiO 3-0.053BaTiO 3 (NBT-0.053BT) single crystal and epoxy are fabricated for ultrasonic transducer applications by a modified dice-and-fill method. Excellent properties for ultrasonic transducer applications have been achieved, such as high electromechanical coupling coefficient (k t = 73%), lower acoustic impedance (Z = 16 MRayl) and moderate dielectric constant. Based on this lead-free piezoelectric single crystal composite, single-element ultrasonic transducer and linear array have been fabricated and characterized. Both types of transducers exhibit similar performance with broad bandwidth of exceeding 100%. The promising results show that these lead-free composites have the potential to be used for high-performance ultrasonic transducers.
URI: http://hdl.handle.net/10397/16488
ISSN: 0924-4247
EISSN: 1873-3069
DOI: 10.1016/j.sna.2012.05.030
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