Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24501
Title: High frequency PMN-PT single crystal focusing transducer fabricated by a mechanical dimpling technique
Authors: Chen, Y
Lam, KH
Zhou, D
Cheng, WF
Dai, JY 
Luo, HS
Chan, HLW 
Keywords: Focusing ultrasound transducer
High frequency
PMN-PT single crystal
Issue Date: 2013
Source: Ultrasonics, 2013, v. 53, no. 2, p. 345-349 How to cite?
Journal: Ultrasonics 
Abstract: High frequency (∼30 MHz and ∼80 MHz) focusing ultrasound transducers were fabricated using a PMN-0.28PT single crystal by a mechanical dimpling technique. The dimpled single crystal was used as an active element for the focusing transducer. Compared with a plane transducer, the focusing transducer fabricated with a dimpled active element exhibits much broader bandwidth and higher sensitivity. Besides, a high quality image can be obtained by the 30 MHz focusing transducer, in which the -6 dB axial and lateral resolution is 27 μm and 139 μm, respectively. These results prove that the dimpling technique is capable to fabricate the high frequency focusing transducers with excellent performance for imaging applications.
URI: http://hdl.handle.net/10397/24501
ISSN: 0041-624X
DOI: 10.1016/j.ultras.2012.06.017
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