Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/26066
Title: Fabrication and performance of endoscopic ultrasound radial arrays based on PMN-PT single crystal/epoxy 1-3 composite
Authors: Zhou, D
Cheung, KF
Chen, Y
Lau, ST
Zhou, Q
Shung, KK
Luo, HS
Dai, J 
Chan, HLW 
Keywords: Acoustics
Couplings
Crystals
Frequency measurement
Impedance
Transducers
Issue Date: 2011
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2011, v. 58, no. 2, 5716465, p. 477-484 How to cite?
Journal: IEEE transactions on ultrasonics, ferroelectrics, and frequency control 
Abstract: In this paper, 0.7Pb(Mg1/3Nb2/3)O3-0. 3PbTiO3 (PMN-PT) single crystal/epoxy 1/3 composite was used as the active material of the endoscopic ultrasonic radial array transducer, because this composite exhibited ultrahigh electromechanical coupling coefficient (kt = 0.81%), very low mechanical quality factor (Qm = 11) and relatively low acoustic impedance (Zt = 12 MRayls). A 6.91 MHz PMN-PT/epoxy 1/3 composite radial array transducer with 64 elements was tested in a pulseecho response measurement. The -6-dB bandwidth of the composite array transducer was 102%, which was ∼30% larger than that of traditional lead zirconate titanate array transducer. The two-way insertion loss was found to be -32.3 dB. The obtained results show that this broadband array transducer is promising for acquiring high-resolution endoscopic ultrasonic images in many clinical applications.
URI: http://hdl.handle.net/10397/26066
ISSN: 0885-3010
EISSN: 1525-8955
DOI: 10.1109/TUFFC.2011.1825
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

23
Last Week
1
Last month
0
Citations as of Jan 19, 2018

WEB OF SCIENCETM
Citations

21
Last Week
0
Last month
1
Citations as of Jan 12, 2018

Page view(s)

51
Last Week
2
Last month
Citations as of Jan 14, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.