Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5988
Title: Bandwidth improvement of LiNbO₃ ultrasonic transducers by half-concaved inversion layer approach
Authors: Chen, J
Dai, J 
Zhang, C
Zhang, ZT
Feng, GP
Keywords: Ultrasonic transducers
Issue Date: Nov-2012
Publisher: American Institute of Physics
Source: Review of scientific instruments, Nov. 2012, v. 83, no. 11, 114903, p. 1-5 How to cite?
Journal: Review of scientific instruments 
Abstract: A novel type of half-concaved LiNbO ₃ plate with domain inversion layer has been proposed for fabricating high-frequency broadband ultrasonic transducers. Two opposite ferroelectric polarization layers with a curved boundary are presented after heat treatment in the half-concaved LiNbO ₃ plate with a total thickness of 110 μm. Characterization of the transducers illustrates that, without a matching layer, the self-focusing transducer with the half-concaved LiNbO ₃ plate has achieved 123% bandwidth at the center frequency of 60 MHz, which is a significant improvement over the planar inversion layer transducer.
URI: http://hdl.handle.net/10397/5988
ISSN: 0034-6748 (print)
DOI: 10.1063/1.4766822
Rights: © 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Chen et al., Rev. Sci. Instrum. 83, 114903 (2012) and may be found at http://link.aip.org/link/?rsi/83/114903
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