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PMN-PT single crystal for endoscopic ultrasound 2D array application

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Abstract

Based on lead magnesium niobate-lead titanate single crystal, a 24 × 24 row-column addressing endoscopic two-dimensional array has been successfully fabricated using novel flanged electrodes and “semi-kerf” technologies. Each row/column array element was measured to have an electromechanical coupling coefficient of 0.81, a center frequency of 5MHz, and a fractional bandwidth of approximately 88% at −6 dB. Of particular significance was that the lead magnesium niobate-lead titanate element exhibits much higher sensitivity compared with lead zirconate titanate-based 2D arrays with similar operational frequency and element area. According to the Field II simulated results, although the obtained beamwidth at −6 dB was a little inferior to that of the fully sampled 24 × 24 two-dimensional array, it is believed that the beamwidth can be improved by appropriately increasing the element number. These results demonstrated that the lead magnesium niobate-lead titanate single-crystal 2D array is a promising candidate for real-time three-dimensional endoscopic ultrasound imaging.

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Author information

Authors and Affiliations

  1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China

    Yuhang Zhu, Benpeng Zhu & Xiaofei Yang

  2. Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China

    Huageng Liang

  3. EDAN Instruments, Inc., Shenzhen, 518122, China

    Dan Zhou

  4. Shenzhen Institute of Huazhong University of Science & Technology, Shenzhen, 518000, China

    Benpeng Zhu

Authors
  1. Yuhang Zhu
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  2. Huageng Liang
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  3. Benpeng Zhu
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  4. Dan Zhou
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  5. Xiaofei Yang
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Corresponding author

Correspondence to Benpeng Zhu.

Additional information

Yuhang Zhu and Huageng Liang are co-first authors of this paper.

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Zhu, Y., Liang, H., Zhu, B. et al. PMN-PT single crystal for endoscopic ultrasound 2D array application. Electron. Mater. Lett. 13, 184–189 (2017). https://doi.org/10.1007/s13391-017-6311-6

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  • DOI: https://doi.org/10.1007/s13391-017-6311-6

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