Development of a 20-MHz wide-bandwidth PMN-PT single crystal phased-array ultrasound transducer

Chi Man Wong; Yan Chen; Haosu Luo; Jiyan Dai; Kwok Ho Lam; Helen Lai wa Chan

doi:10.1016/j.ultras.2016.09.012

Development of a 20-MHz wide-bandwidth PMN-PT single crystal phased-array ultrasound transducer

Chi Man Wong, Yan Chen, Haosu Luo, Jiyan Dai, Kwok Ho Lam, Helen Lai wa Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

46 Citations (Scopus)

Abstract

High piezoelectric (d33 > 1000 pC/N) and electromechanical coupling (k33 > 0.8) properties of the single crystal with an optimized fabrication process involving the photolithography technique have been demonstrated to be suitable for wide-bandwidth (⩾70%) and high-sensitivity (insertion loss ⩽30 dB) phased-array transducer application. A −6 dB bandwidth of 91% and an insertion loss of 29 dB for the 20-MHz 64-element phased-array transducer were achieved. This result shows that the bandwidth is improved comparing with the investigated high-frequency (⩾20 MHz) ultrasound transducers using piezoelectric ceramic and single crystal materials. It shows that this phased-array transducer has potential to improve the resolution of biomedical imaging, theoretically. Based on the hypothesis of resolution improvement, this phased-array transducer is capable for small animal (i.e. mouse and zebrafish) studies.

Original language	English
Pages (from-to)	181-186
Number of pages	6
Journal	Ultrasonics
Volume	73
DOIs	https://doi.org/10.1016/j.ultras.2016.09.012
Publication status	Published - 1 Jan 2017

Keywords

High-frequency phased-array
PMN-PT single crystal
Ultrasound transducer

ASJC Scopus subject areas

Acoustics and Ultrasonics

More information

10.1016/j.ultras.2016.09.012

http://hdl.handle.net/10397/66406

Cite this

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abstract = "High piezoelectric (d33 > 1000 pC/N) and electromechanical coupling (k33 > 0.8) properties of the single crystal with an optimized fabrication process involving the photolithography technique have been demonstrated to be suitable for wide-bandwidth (⩾70%) and high-sensitivity (insertion loss ⩽30 dB) phased-array transducer application. A −6 dB bandwidth of 91% and an insertion loss of 29 dB for the 20-MHz 64-element phased-array transducer were achieved. This result shows that the bandwidth is improved comparing with the investigated high-frequency (⩾20 MHz) ultrasound transducers using piezoelectric ceramic and single crystal materials. It shows that this phased-array transducer has potential to improve the resolution of biomedical imaging, theoretically. Based on the hypothesis of resolution improvement, this phased-array transducer is capable for small animal (i.e. mouse and zebrafish) studies.",

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AU - Wong, Chi Man

AU - Chen, Yan

AU - Luo, Haosu

AU - Dai, Jiyan

AU - Lam, Kwok Ho

AU - Chan, Helen Lai wa

PY - 2017/1/1

Y1 - 2017/1/1

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AB - High piezoelectric (d33 > 1000 pC/N) and electromechanical coupling (k33 > 0.8) properties of the single crystal with an optimized fabrication process involving the photolithography technique have been demonstrated to be suitable for wide-bandwidth (⩾70%) and high-sensitivity (insertion loss ⩽30 dB) phased-array transducer application. A −6 dB bandwidth of 91% and an insertion loss of 29 dB for the 20-MHz 64-element phased-array transducer were achieved. This result shows that the bandwidth is improved comparing with the investigated high-frequency (⩾20 MHz) ultrasound transducers using piezoelectric ceramic and single crystal materials. It shows that this phased-array transducer has potential to improve the resolution of biomedical imaging, theoretically. Based on the hypothesis of resolution improvement, this phased-array transducer is capable for small animal (i.e. mouse and zebrafish) studies.

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Development of a 20-MHz wide-bandwidth PMN-PT single crystal phased-array ultrasound transducer

Abstract

Keywords

ASJC Scopus subject areas

More information

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